CA2533969C - Coiled tubing/top drive rig and method - Google Patents
Coiled tubing/top drive rig and method Download PDFInfo
- Publication number
- CA2533969C CA2533969C CA002533969A CA2533969A CA2533969C CA 2533969 C CA2533969 C CA 2533969C CA 002533969 A CA002533969 A CA 002533969A CA 2533969 A CA2533969 A CA 2533969A CA 2533969 C CA2533969 C CA 2533969C
- Authority
- CA
- Canada
- Prior art keywords
- mast
- injector
- rig
- coiled tubing
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 20
- 230000007246 mechanism Effects 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 11
- 238000005553 drilling Methods 0.000 description 24
- 238000005516 engineering process Methods 0.000 description 8
- 244000261422 Lysimachia clethroides Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 101100194817 Caenorhabditis elegans rig-6 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 101150006257 rig-4 gene Proteins 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The rig for selectively inserting coiled tubing or a threaded tubular through a rig floor 13 and into a well includes a mast 15 extending upward from the rig floor and movable between a threaded tubular position and a coiled tubing position. A top drive 21 is movable along an axis of the mast to insert the threaded tubular in the well when a top drive axis 42 is substantially aligned with the axis 44 of the well. Injector 17 supported on the mast inserts coiled tubing into the well, with the injector having an axis 46 offset from the top drive axis and substantially aligned with the axis of the well when the mast is in the coiled tubing position. A powered drive 54 is provided for selectively moving the mast between the threaded tubular position and the coiled tubing position.
Description
COILED TUBING/TOP DRIVE RIG AND METHOD
2 FIELD OF THE INVENTION
3 The invention relates to methods and apparatus for performing earth
4 borehole operations, such as drilling, and in particular to methods and apparatus which can use either coiled tubing or threaded pipe.
8 The use of coiled tubing (CT) technology in oil and gas drilling and 9 servicing has .become more and more common in the last few years. In CT
technology, a continuous pipe wound on a spool is straightened and pushed 11 down a well using a CT injector. CT technology can be used for both drilling and 12 servicing operations.
13 The advantages offered by the use of CT technology, including economy 14 of time and cost, are well known. As compared with jointed-pipe technology wherein typically 30-45 foot straight sections of pipe are threadedly connected 16 one section at a time, CT technology allows the continuous deployment of pipe, 17 significantly reducing the frequency with which pipe insertion into the well must 18 be suspended to allow additional sections of pipe to be connected. This results 19 in less connection time, and as a result, an efficiency of both cost and time. CT
technology also allows fluid to be continuously circulated downhole while 21 inserting the tubular in the well, thereby significantly reducing the likelihood of a 22 stuck tubular.
23 The adoption of CT technology has been less widespread than originally 24 anticipated as a result of certain problems inherent in using CT. For example, 1 because CT tends to be less robust than threaded pipe, it is often necessary to 2 drill a surface hole using threaded pipe, cement casing into the surface hole, and 3 then switch over to CT drilling. Additionally, when difficult rock formations are 4 encountered downhole, it may be desirable to switch from CT drilling to threaded pipe drilling until drilling through the difficult formation is complete, and then 6 switch back to CT drilling to continue efficiently drilling the well.
Similarly, when it 7 is necessary to perform drill stem testing or coring operations to assess 8 conditions downhole, it may again be desirable to switch from CT to threaded 9 pipe and then back again. A switch back to threaded pipe operations may also be desirable to run casing into the drilled well. When conducting CT drilling 11 operations, it is frequently desirable to switch back and forth between a CT
12 drilling rig and a threaded pipe conventions! drilling rig, a process which results 13 in significant costs for two rigs and down time as one rig is moved out of the way, 14 and another rig put in place.
A disadvantage of CT drilling is the time-consuming process of 16 assembling a bottom-hole-assembly (BHA) - the components at the end of the 17 CT for drilling, testing, well servicing, etc., and connecting the BHA to the end of 18 the CT. Presently, this operation is commonly performed manually through the 19 use of rotary tables and make-up/breakout equipment. In some instances, top drives are used, but one of the CT injector or the top drive must be moved out, 21 i.e., they cannot both be in line with the borehole. Not only does this process 22 result in costly downtime, but it can also present safety hazards to the workers 23 as they manipulate heavy components manually.
24 U.S. Publication 2004/0206551 discloses a rig adapted to perform earth borehole operations using both CT and/or threaded pipe, the CT injector and a 1 top drive being mounted on the same mast. The CT injector is selectively 2 moveable with respect to the mast between a first position wherein the CT
3 injector is in line with the mast of the rig and hence the earth borehole and a 4 second position wherein the CT injector is out of line with the mast to allow threaded pipe operations using the top drive.
6 The disadvantages of the prior art are overcome by the present invention, 7 and an improved rig and method for selectively inserting either coiled tubing or a 8 threaded tubular into a well utilizing a coiled tubing injector or a top drive, 9 respectively, is hereinafter disclosed.
2 In one aspect, the present invention provides a rig for selectively inserting 3 coiled tubing or a threaded tubular through a rig floor and into a well. The rig 4 includes a mast extending upward from the rig floor and movable between a threaded tubular position and a coiled tubing position. A top drive is movable 6 along an axis of the mast to insert the threaded tubular into the well, with a top 7 drive having a top drive axis substantially aligned with an axis of the well when 8 the mast is in the threaded tubular position. An injector supported on the mast is 9 also provided to insert the coiled tubing into the well, with the injector having an injector axis offset from the top drive axis and substantially aligned with the axis 11 of the well when the mast is in the coiled tubing position. A powered drive is 12 used to selectively move the mast between the threaded tubular position and the 13 coiled tubing position.
14 In another aspect of the invention, the mast is pivotally movable with respect to the rig floor between a threaded tubular position and a coiled tubing 16 position. An injector may be secured to the mast by a support bracket, or a slide 17 supported on the mast may be provided for guiding vertical movement of the 18 injector relative to the rig floor when the mast is in the coiled tubing position.
19 In another embodiment, a rig for selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well includes a mast, a top drive 21 and an injector. A connector is provided for removably connecting the mast to 22 the injector, and a powered drive selectively raises the mast and the injector 23 supported on the mast, and the same or another drive moves the mast between 24 a threaded tubular position and a coiled tubing position. The injector and a coiled tubing reel may be supported on a trailer separate from the rig base 1 during transportation, and a powered lift may be used for raising the injector for 2 connection with the mast. The mast may be pivotally movable with respect to 3 the rig base between the threaded tubular positron and the coiled tubing position.
4 In one embodiment, a fluid powered cylinder is provided for moving the injector relative to the mast and connecting the mast and the injector.
6 Further features and advantages of the present invention will become 7 apparent from the following detailed description, wherein reference is made to 8 the figures in the accompanying drawings.
8 The use of coiled tubing (CT) technology in oil and gas drilling and 9 servicing has .become more and more common in the last few years. In CT
technology, a continuous pipe wound on a spool is straightened and pushed 11 down a well using a CT injector. CT technology can be used for both drilling and 12 servicing operations.
13 The advantages offered by the use of CT technology, including economy 14 of time and cost, are well known. As compared with jointed-pipe technology wherein typically 30-45 foot straight sections of pipe are threadedly connected 16 one section at a time, CT technology allows the continuous deployment of pipe, 17 significantly reducing the frequency with which pipe insertion into the well must 18 be suspended to allow additional sections of pipe to be connected. This results 19 in less connection time, and as a result, an efficiency of both cost and time. CT
technology also allows fluid to be continuously circulated downhole while 21 inserting the tubular in the well, thereby significantly reducing the likelihood of a 22 stuck tubular.
23 The adoption of CT technology has been less widespread than originally 24 anticipated as a result of certain problems inherent in using CT. For example, 1 because CT tends to be less robust than threaded pipe, it is often necessary to 2 drill a surface hole using threaded pipe, cement casing into the surface hole, and 3 then switch over to CT drilling. Additionally, when difficult rock formations are 4 encountered downhole, it may be desirable to switch from CT drilling to threaded pipe drilling until drilling through the difficult formation is complete, and then 6 switch back to CT drilling to continue efficiently drilling the well.
Similarly, when it 7 is necessary to perform drill stem testing or coring operations to assess 8 conditions downhole, it may again be desirable to switch from CT to threaded 9 pipe and then back again. A switch back to threaded pipe operations may also be desirable to run casing into the drilled well. When conducting CT drilling 11 operations, it is frequently desirable to switch back and forth between a CT
12 drilling rig and a threaded pipe conventions! drilling rig, a process which results 13 in significant costs for two rigs and down time as one rig is moved out of the way, 14 and another rig put in place.
A disadvantage of CT drilling is the time-consuming process of 16 assembling a bottom-hole-assembly (BHA) - the components at the end of the 17 CT for drilling, testing, well servicing, etc., and connecting the BHA to the end of 18 the CT. Presently, this operation is commonly performed manually through the 19 use of rotary tables and make-up/breakout equipment. In some instances, top drives are used, but one of the CT injector or the top drive must be moved out, 21 i.e., they cannot both be in line with the borehole. Not only does this process 22 result in costly downtime, but it can also present safety hazards to the workers 23 as they manipulate heavy components manually.
24 U.S. Publication 2004/0206551 discloses a rig adapted to perform earth borehole operations using both CT and/or threaded pipe, the CT injector and a 1 top drive being mounted on the same mast. The CT injector is selectively 2 moveable with respect to the mast between a first position wherein the CT
3 injector is in line with the mast of the rig and hence the earth borehole and a 4 second position wherein the CT injector is out of line with the mast to allow threaded pipe operations using the top drive.
6 The disadvantages of the prior art are overcome by the present invention, 7 and an improved rig and method for selectively inserting either coiled tubing or a 8 threaded tubular into a well utilizing a coiled tubing injector or a top drive, 9 respectively, is hereinafter disclosed.
2 In one aspect, the present invention provides a rig for selectively inserting 3 coiled tubing or a threaded tubular through a rig floor and into a well. The rig 4 includes a mast extending upward from the rig floor and movable between a threaded tubular position and a coiled tubing position. A top drive is movable 6 along an axis of the mast to insert the threaded tubular into the well, with a top 7 drive having a top drive axis substantially aligned with an axis of the well when 8 the mast is in the threaded tubular position. An injector supported on the mast is 9 also provided to insert the coiled tubing into the well, with the injector having an injector axis offset from the top drive axis and substantially aligned with the axis 11 of the well when the mast is in the coiled tubing position. A powered drive is 12 used to selectively move the mast between the threaded tubular position and the 13 coiled tubing position.
14 In another aspect of the invention, the mast is pivotally movable with respect to the rig floor between a threaded tubular position and a coiled tubing 16 position. An injector may be secured to the mast by a support bracket, or a slide 17 supported on the mast may be provided for guiding vertical movement of the 18 injector relative to the rig floor when the mast is in the coiled tubing position.
19 In another embodiment, a rig for selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well includes a mast, a top drive 21 and an injector. A connector is provided for removably connecting the mast to 22 the injector, and a powered drive selectively raises the mast and the injector 23 supported on the mast, and the same or another drive moves the mast between 24 a threaded tubular position and a coiled tubing position. The injector and a coiled tubing reel may be supported on a trailer separate from the rig base 1 during transportation, and a powered lift may be used for raising the injector for 2 connection with the mast. The mast may be pivotally movable with respect to 3 the rig base between the threaded tubular positron and the coiled tubing position.
4 In one embodiment, a fluid powered cylinder is provided for moving the injector relative to the mast and connecting the mast and the injector.
6 Further features and advantages of the present invention will become 7 apparent from the following detailed description, wherein reference is made to 8 the figures in the accompanying drawings.
-5-2 Figure 1 is a side elevational view of one embodiment of the present 3 invention including a top drive supported on a mast and aligned with a wellbore.
4 Figure 2 illustrates the rig as shown in Figure 1, with the mast moved to the coiled tubing position so that the centerline of the injector is aligned with the
4 Figure 2 illustrates the rig as shown in Figure 1, with the mast moved to the coiled tubing position so that the centerline of the injector is aligned with the
6 wellbore.
7 Figure 3 is a side elevational view of another rig according to the
8 invention, and the centerline of the injector aligned with the wellbore and the
9 injector vertically movable along a slide supported on the mast.
Figure 4 illustrates another embodiment of the invention, with the top drive 11 supported on a mast and aligned with the wellbore.
12 Figure 5 illustrates the rig as shown in Figure 4, with the mast moved 13 laterally so that the centerline of the injector is aligned with the centerline of the 14 wellbore.
Figure 6 is a cross section along lines 6-6 in the Figure 5, showing further 16 details of the mast positioning mechanism.
17 Figure 7 illustrates a mast supported on a rig base, and a tubing reel 18 supported on a trailer structurally separate from the rig base for providing coiled 19 tubing to the injector while supported on the mast.
Figure 8 illustrates a mast pivoted downward relative to the rig base, and 21 the trailer separate from the rig base supporting a coiled tubing reel and an 22 injector, with the injector raised for connection to the mast.
23 Figure 9 illustrates the mast fully lowered on the rig base.
24 Figure 10 illustrates a mast moved laterally in respect to the rig base for being supported by a mast trailer separate from the rig base for transportation.
1 Figures 11 and 12 illustrate an adjustment mechanism on the trailer for 2 adjusting the position of the injector relative to the mast to facilitate the 3 connection of the injector and the mast.
4 Figure 13 illustrates an alternate embodiment wherein the mast is moved laterally relative to a rig base between a coiled tubing position and a threaded 6 tubular position after the mast is used to pick up the injector.
7 Figure 14 illustrates yet another embodiment wherein the injector is 8 provided with a lubricator axis offset from the mast for conducting coiled tubing 9 operations after the mast is used to pick up the injector.
2 Referring to Figure 1, one embodiment of the rig includes a mast 15, a 3 working platform 12, and a rig floor 13. Mast 15 is comprised of a pair of spaced 4 elongate frame members 32 interconnected at the top by a crown 22. It should be understood that the figures are for simplicity and that the mast and the rig 6 may take various structural forms. Mast 15 is pivotally connected to platform 12, 7 as described below. As shown in Figure 1, the platform 12 is supported on a 8 wheeled carrier or trailer 1 having a relatively low carrier surface 3. The wheeled 9 carrier 1 may also include a tongue 2 which may be attached to a motorized vehicle, such that the trailer 1 may be moved from one location to another. It will 11 be appreciated that the wheeled carrier 1 may alternatively be self propelled, or 12 that the carrier may comprise a stationary structure as, for example, a skid or the 13 like which can be raised and placed on a trailer or other transport vehicle for 14 movement to another site. It will also be appreciated that the rig of the present invention could be mounted on an offshore platform via a skid or other 16 substructure on which the mast and other components are mounted. Wheeled 17 trailer 1 also provides a second, rear platform on which a rotary table 14 is 18 provided, with rig floor 13 defined by platform 12. Working platform 12, which 19 preferably may be raised above carrier 1, provides a rig floor 13 for workers to manipulate various downhole components into and out of the rotary table 14 on 21 the working platform, and enables workers to perform other normal operations in 22 conjunction with earth borehole operations such as drilling, workover, servicing, 23 etc.
24 Rotatably mounted on the trailer 1 is a spool 4 upon which is wound a length of coiled tubing 30. Spool 4 can be rotated in a clockwise and _g_ 1 counterclockwise directions using a suitable drive assembly (not shown).
Also 2 located on trailer 1 is an engine 7 and a hydraulic tank 8 for storage of hydraulic 3 fluid used in operating the various hydraulic components of the rig, e.g., motors, 4 hydraulic cylinders, etc. As is well known, most of the components of the rig may be operated hydraulically, electrically or, in some cases, pneumatically.
6 Coiled tubing 30 extends up to a gooseneck or guide arch 34. The gooseneck 7 34 is attached to the top of coiled tubing injector 17 which, as shown in Figure 1, 8 is spaced from the mast 15. Coiled tubing injector 17 typically comprises a 9 series of blocks, sprockets or like grippers driven by endless chains or belts which grab the coiled tubing 30 and manipulate it downwardly when it is being 11 injected into a well and pull it upwardly when it is being removed from the well.
12 As shown in Figure 1, a top drive 21 is mounted on mast 15 between 13 members 32 for longitudinal movement therealong in either direction.
Typically, 14 top drive 21 is mounted on a track system, which is affixed to mast 32, with the track system defining a central mast axis 40 which defines the direction of travel 16 of the top drive 21. Top drive 21 may be moved longitudinally along mast 15 by 17 a hoisting system comprised of a winch or drawworks 20 mounted on trailer 1 18 and one or more cables 35 which run through a sheave assembly in crown block 19 22 located at the top of mast 15. The cables 35 may extend down from the crown block and be attached to top drive 21, whereby drawworks 20 may 21 selectively raise top drive 21 upwardly along mast 15 or lower top drive 21 22 downwardly along mast 15. It will also be appreciated that provision could be 23 made to use a screw mechanism extending longitudinally along members 15 to 24 selectively raise or lower top drive 21 along mast 15. it will be recognized, however, that top drive 21 could be moved by hydraulic cylinders or other _g_ 1 powered drive member to selectively position the top drive longitudinally along 2 mast 15. In the embodiment shown in Figure 1, a central axis 42 of the top drive 3 21 is thus in line with the axis 40 of the mast 15 and the axis 44 of the borehole 4 or well, while the coiled tubing injector 17 has its axis 46 offset from the top drive axis 42. The coiled tubing injector 17 may be positioned above or below top 6 drive 21, but the centerline of the top drive 21 is spaced from the centerline of 7 the coiled tubing injector 17.
8 For the embodiment shown in Figure 1, the axes of both top drive 21 and 9 mast 15 are always out of alignment with the axis 46 of the coiled tubing injector 17, such that the top drive and the injector may work independently. It will be 11 appreciated that coiled tubing injector 17 is out of alignment with the axis 42 of 12 top drive 21, and that the axis 42 of top drive 21 is in line with axis of the mast 15 13 and the wellbore. The threaded tubulars supported on the top drive 21 may thus 14 be passed into the well while the injector 17 is inoperative.
Particularly for embodiments wherein the reel 4 is supported on the carrier 16 1, the injector 17 and thus the guide arch 34 are provided between the mast 17 and the reel 4, so that the mast does not interfere with coiled tubing operations 18 when in the Figure 2 configuration, and the injector does not interfere with the 19 top drive and threaded tubular operations when in the Figure 1 configuration.
In Figure 1, the coiled tubing injector 17 is thus in an inoperative position 21 while the top drive 21 is in position to manipulate threaded tubular components.
22 With coiled tubing injector 17 out of alignment with the axis 44 of the wellbore, 23 the top drive 21 may perform operations typically performed by a top drive such 24 as, for example, manipulating a tubular component such as casing brought in through the V-door, as is common in typical oilfield operations. Although not
Figure 4 illustrates another embodiment of the invention, with the top drive 11 supported on a mast and aligned with the wellbore.
12 Figure 5 illustrates the rig as shown in Figure 4, with the mast moved 13 laterally so that the centerline of the injector is aligned with the centerline of the 14 wellbore.
Figure 6 is a cross section along lines 6-6 in the Figure 5, showing further 16 details of the mast positioning mechanism.
17 Figure 7 illustrates a mast supported on a rig base, and a tubing reel 18 supported on a trailer structurally separate from the rig base for providing coiled 19 tubing to the injector while supported on the mast.
Figure 8 illustrates a mast pivoted downward relative to the rig base, and 21 the trailer separate from the rig base supporting a coiled tubing reel and an 22 injector, with the injector raised for connection to the mast.
23 Figure 9 illustrates the mast fully lowered on the rig base.
24 Figure 10 illustrates a mast moved laterally in respect to the rig base for being supported by a mast trailer separate from the rig base for transportation.
1 Figures 11 and 12 illustrate an adjustment mechanism on the trailer for 2 adjusting the position of the injector relative to the mast to facilitate the 3 connection of the injector and the mast.
4 Figure 13 illustrates an alternate embodiment wherein the mast is moved laterally relative to a rig base between a coiled tubing position and a threaded 6 tubular position after the mast is used to pick up the injector.
7 Figure 14 illustrates yet another embodiment wherein the injector is 8 provided with a lubricator axis offset from the mast for conducting coiled tubing 9 operations after the mast is used to pick up the injector.
2 Referring to Figure 1, one embodiment of the rig includes a mast 15, a 3 working platform 12, and a rig floor 13. Mast 15 is comprised of a pair of spaced 4 elongate frame members 32 interconnected at the top by a crown 22. It should be understood that the figures are for simplicity and that the mast and the rig 6 may take various structural forms. Mast 15 is pivotally connected to platform 12, 7 as described below. As shown in Figure 1, the platform 12 is supported on a 8 wheeled carrier or trailer 1 having a relatively low carrier surface 3. The wheeled 9 carrier 1 may also include a tongue 2 which may be attached to a motorized vehicle, such that the trailer 1 may be moved from one location to another. It will 11 be appreciated that the wheeled carrier 1 may alternatively be self propelled, or 12 that the carrier may comprise a stationary structure as, for example, a skid or the 13 like which can be raised and placed on a trailer or other transport vehicle for 14 movement to another site. It will also be appreciated that the rig of the present invention could be mounted on an offshore platform via a skid or other 16 substructure on which the mast and other components are mounted. Wheeled 17 trailer 1 also provides a second, rear platform on which a rotary table 14 is 18 provided, with rig floor 13 defined by platform 12. Working platform 12, which 19 preferably may be raised above carrier 1, provides a rig floor 13 for workers to manipulate various downhole components into and out of the rotary table 14 on 21 the working platform, and enables workers to perform other normal operations in 22 conjunction with earth borehole operations such as drilling, workover, servicing, 23 etc.
24 Rotatably mounted on the trailer 1 is a spool 4 upon which is wound a length of coiled tubing 30. Spool 4 can be rotated in a clockwise and _g_ 1 counterclockwise directions using a suitable drive assembly (not shown).
Also 2 located on trailer 1 is an engine 7 and a hydraulic tank 8 for storage of hydraulic 3 fluid used in operating the various hydraulic components of the rig, e.g., motors, 4 hydraulic cylinders, etc. As is well known, most of the components of the rig may be operated hydraulically, electrically or, in some cases, pneumatically.
6 Coiled tubing 30 extends up to a gooseneck or guide arch 34. The gooseneck 7 34 is attached to the top of coiled tubing injector 17 which, as shown in Figure 1, 8 is spaced from the mast 15. Coiled tubing injector 17 typically comprises a 9 series of blocks, sprockets or like grippers driven by endless chains or belts which grab the coiled tubing 30 and manipulate it downwardly when it is being 11 injected into a well and pull it upwardly when it is being removed from the well.
12 As shown in Figure 1, a top drive 21 is mounted on mast 15 between 13 members 32 for longitudinal movement therealong in either direction.
Typically, 14 top drive 21 is mounted on a track system, which is affixed to mast 32, with the track system defining a central mast axis 40 which defines the direction of travel 16 of the top drive 21. Top drive 21 may be moved longitudinally along mast 15 by 17 a hoisting system comprised of a winch or drawworks 20 mounted on trailer 1 18 and one or more cables 35 which run through a sheave assembly in crown block 19 22 located at the top of mast 15. The cables 35 may extend down from the crown block and be attached to top drive 21, whereby drawworks 20 may 21 selectively raise top drive 21 upwardly along mast 15 or lower top drive 21 22 downwardly along mast 15. It will also be appreciated that provision could be 23 made to use a screw mechanism extending longitudinally along members 15 to 24 selectively raise or lower top drive 21 along mast 15. it will be recognized, however, that top drive 21 could be moved by hydraulic cylinders or other _g_ 1 powered drive member to selectively position the top drive longitudinally along 2 mast 15. In the embodiment shown in Figure 1, a central axis 42 of the top drive 3 21 is thus in line with the axis 40 of the mast 15 and the axis 44 of the borehole 4 or well, while the coiled tubing injector 17 has its axis 46 offset from the top drive axis 42. The coiled tubing injector 17 may be positioned above or below top 6 drive 21, but the centerline of the top drive 21 is spaced from the centerline of 7 the coiled tubing injector 17.
8 For the embodiment shown in Figure 1, the axes of both top drive 21 and 9 mast 15 are always out of alignment with the axis 46 of the coiled tubing injector 17, such that the top drive and the injector may work independently. It will be 11 appreciated that coiled tubing injector 17 is out of alignment with the axis 42 of 12 top drive 21, and that the axis 42 of top drive 21 is in line with axis of the mast 15 13 and the wellbore. The threaded tubulars supported on the top drive 21 may thus 14 be passed into the well while the injector 17 is inoperative.
Particularly for embodiments wherein the reel 4 is supported on the carrier 16 1, the injector 17 and thus the guide arch 34 are provided between the mast 17 and the reel 4, so that the mast does not interfere with coiled tubing operations 18 when in the Figure 2 configuration, and the injector does not interfere with the 19 top drive and threaded tubular operations when in the Figure 1 configuration.
In Figure 1, the coiled tubing injector 17 is thus in an inoperative position 21 while the top drive 21 is in position to manipulate threaded tubular components.
22 With coiled tubing injector 17 out of alignment with the axis 44 of the wellbore, 23 the top drive 21 may perform operations typically performed by a top drive such 24 as, for example, manipulating a tubular component such as casing brought in through the V-door, as is common in typical oilfield operations. Although not
-10-1 shown, it will be appreciated that the rig of the present invention may be 2 provided with elevators and other components normally used to manipulate 3 downhole components, e.g., to grip a pipe or other downhole component and 4 move it to a position where it may be engaged and subsequently manipulated by the top drive. This ability to selectively use the top drive and the injector 6 independently of one another is clearly advantageous in terms of saving cost 7 and time. The rig is universal in the sense that the same rig carries a coiled 8 tubing injector to manipulate coiled tubing and a top drive to manipulate jointed 9 pipe or other downhole components. The injector and the top drive are selectively, independently operable to perform their customary functions.
11 Turning now to Figure 2, the coiled tubing injector 17 is positioned over
12 the axis 44 of well while the axis of both the mast 15 and top drive 21 are out of
13 alignment with wellbore axis 44, and the top drive 21 is not operable.
Thus, for
Thus, for
14 the embodiment shown in Figure 2, the coiled tubing injector 17 is being used to manipulate coiled tubing 30 and the top drive 21 is in an inoperative position, 16 while for the embodiment shown in Figure 1, the top drive 21 is used to inject 17 threaded tubulars into the well, and the injector 17 is inoperative.
18 Figure 2 also depicts a lubricator 52 positioned below the injector 17 for 19 sealing an annulus about the injected tubular as it is run into and out of the well.
One or more hydraulic cylinders 54 extending between the mast 15 and the 21 trailer 1 may be provided for pivoting the mast 15 between the coiled tubing 22 injector position as shown in Figure 2 and the top drive position as shown in 23 Figure 1. An extendable member 56 may serve as a stop to limit pivoting action 24 of the mast 15 when the mast is in the coiled tubing injector position.
Alternatively, other stops and/or limit switches may be positioned on the platform 1 12 or the mast 15 to serve the function of either a stop or to discontinue power to 2 the cylinders 54 to stop the mast when it is in either the position shown in Figure 3 1 or the position as shown in Figure 2. Figure 2 also depicts a coiled tubing 4 cutting unit 6 which may be positioned on the rig floor 3 for severing the coiled tubing at a selected location above the rotary table, while still supporting the 6 severed coiled tubing within the well.
7 Figure 2 also depicts a support bracket 58 secured to the mast 15 and to 8 the injector 17 for fixing the relative position of the injector with respect to the 9 mast. The axis 46 of the injector is thus angled with respect to the axis 40 of the mast 15, so that when the mast 15 is tilted as shown in Figure 2, the axis of the 11 injector is vertical, so that coiled tubing may pass through the injector and into 12 the wellbore. A plurality of latching or locking mechanisms may be spaced 13 longitudinally along mast 15 such that the top drive 21 may be held at a variety 14 of desired, longitudinally spaced locations along mast 15 when the injector 17 is operative.
16 Referring to Figures 1 and 2, it should be understood that the angle 17 between the axis 44 of the injector 17 and the axis 42 of the top drive 21 is the 18 same as the angle of the mast 15 from vertical, so that the mast 15 when vertical 19 will have the axis 42 of the top drive 21 aligned with the well, and the mast 15 when inclined will have the axis 42 of the injector aligned with the same axis of 21 the well.
22 A universal rig is provided which can selectively handle and run different 23 types of pipe, coiled tubing, and other earth borehole equipment, thereby 24 eliminating the need for two rigs - one rig to use a top drive in the conventional 1 manner with threaded tubulars, and a separate coiled tubing injector rig to 2 perform coiled tubing operations.
3 For the embodiments described subsequently, the same numerals are 4 used to reference similar components. Referring to Figures 3-6, a mast 15 is pivotal with respect to the platform 12, but in this case the injector 17 is not fixed 6 to the mast, and instead a vertical slide member 68 is fixed to the mast, with the 7 axis of the slide member being vertical when the mast is in the coiled tubing 8 position as shown in Figure 3. The mechanical connection between the vertical 9 slide 68 and the mast does not interfere with the travel of the top drive 21 along the mast, but does allow the injector 17 and the guide 34 on top of the injector to 11 be lowered and raised with respect to the mast, as shown in Figure 3. This 12 feature allows the injector to be positioned desirably close to the rig floor 13 13 when injecting coiled tubing into the well, but also allows the injector 17 to be 14 elevated to a higher position so that relatively long tools can be positioned between the injector and the rig floor during service operations. Also, those 16 skilled in the art appreciate that the mast 15 may be pivoted to a travel position 17 so that the crown block 22 is closely adjacent the front of the trailer 1.
The slide 18 member 68 allows the injector to be moved to a selected location along the mast 19 when lowering the mast to a position for travel of the rig to another location.
In Figure 3, the bracket 62 secured to the injector 17 is thus siidable along 21 the axial length of the slide member 68, and this movement may be controlled by 22 a winch mechanism, by cylinders, by a chain drive mechanism powered by a 23 hydraulic motor, or by other suitable drive mechanism 70 for raising and lowering 24 the injector. Except as discussed herein, the other components of the rigs shown in Figures 3-6 may be similar to the Figures 1 and 2 rig components.
1 Referring now to Figure 5, the mast 15 and the top drive 21 are positioned 2 in line with the centerline 44 of the well, so that the rig may be used for 3 operations involving tubular joints with threaded ends. The axis 46 of the injector 4 17 is spaced from the axis 40 of the mast 15, but these axes are parallel rather than being inclined. Bracket 58 may thus fix the position of the injector 17 on the 6 mast.
7 Rather than pivot the mast, the embodiment as shown in Figures 4 and 5 8 moves the platform 12 and the mast 15 relative to the trailer 1 in a lateral 9 direction, so that the centerline 46 of the injector 17 may be positioned in line with the wellbore, as shown in Figure 4. Guide rails 78, 88 and 90 as shown in 11 Figure 6 and one or more hydraulic cylinders 74 as shown in Figures 4 and 5 12 may be used to laterally move the platform 12 and the mast 15 with respect to 13 the trailer 1 between the top drive position as shown in Figure 5 and the tubing 14 injector position as shown in Figure 4. When not in use, the mast 15 may still be pivoted so that the mast may be lowered to a position generally over the trailer 16 when transporting the rig to another well site. Figures 4 and 5 also depict a 17 plurality of ground engaging telescopic members 72 for reliably supporting the 18 trailer 1 and the equipment supported thereon when the rig is in use and when 19 the mast is being moved laterally between the top drive position and the tubing injector position. The same ground engaging member may be used for the other 21 embodiments described herein.
22 Figures 4 and 5 depict one or more hydraulic cylinders 74 for moving the 23 platform 12 and the mast 15 laterally between the coiled tubing position and the 24 top drive position. More particularly, the rod end of the cylinder 74 is connected to base frame 76 which slides on a top plate 78 of the trailer 1, as shown in 1 Figure 6. Slide plate 80, rectangular frame member 82, support member 84 and 2 support member 86 thus move as an assembly relative to the trailer. Spacer 3 plate 88 may be secured by the bolt and nut assembly 89 between the top trailer 4 plate 78 and the cap plate 90, with the plates 88 and 90 acting as a guide during lateral travel of the frame 76 between the tubing injector position and the top 6 drive position. A similar guide on the opposing side of the base frame 76 7 provides reliable movement between the two positions. Other types of guide 8 rails may be provided. In the Figure 4 and 5 embodiments, the stop member 56 9 may be eliminated, or may be used to stop pivoting movement of the mast when moved to the travel position.
11 In an alternate embodiment, a slide member 68 similar to that shown in 12 Figure 3 may be used in the Figures 4 and 5 embodiments, thereby allowing the 13 injector 17 to move vertically with respect to the mast. The slide member would, 14 however, preferably not have an axis inclined relative to the axis of the mast, but rather would have an axis parallel to and offset from the axis of the mast.
The 16 slide member could then be used to raise or lower the injector 17 when the mast 17 was in the coiled tubing position, as shown in Figure 4.
18 For the embodiments discussed above, the mast 15 had a vertical axis 19 when the rig is being used with the top drive to run threaded tubulars in the well, and the axis of the mast is tilted off-vertical or is moved laterally from the vertical 21 axis of the injector 17 when performing coiled tubing operations. It should be 22 understood that, in other applications, the axis of the mast, the top drive, and the 23 rotary table may each be inclined from vertical, but these axes remain aligned 24 with the axis of the borehole, which is also inclined. If the borehole were drilled so that the mast 15 was inclined 10° to the right as shown in Figure 1, the mast
18 Figure 2 also depicts a lubricator 52 positioned below the injector 17 for 19 sealing an annulus about the injected tubular as it is run into and out of the well.
One or more hydraulic cylinders 54 extending between the mast 15 and the 21 trailer 1 may be provided for pivoting the mast 15 between the coiled tubing 22 injector position as shown in Figure 2 and the top drive position as shown in 23 Figure 1. An extendable member 56 may serve as a stop to limit pivoting action 24 of the mast 15 when the mast is in the coiled tubing injector position.
Alternatively, other stops and/or limit switches may be positioned on the platform 1 12 or the mast 15 to serve the function of either a stop or to discontinue power to 2 the cylinders 54 to stop the mast when it is in either the position shown in Figure 3 1 or the position as shown in Figure 2. Figure 2 also depicts a coiled tubing 4 cutting unit 6 which may be positioned on the rig floor 3 for severing the coiled tubing at a selected location above the rotary table, while still supporting the 6 severed coiled tubing within the well.
7 Figure 2 also depicts a support bracket 58 secured to the mast 15 and to 8 the injector 17 for fixing the relative position of the injector with respect to the 9 mast. The axis 46 of the injector is thus angled with respect to the axis 40 of the mast 15, so that when the mast 15 is tilted as shown in Figure 2, the axis of the 11 injector is vertical, so that coiled tubing may pass through the injector and into 12 the wellbore. A plurality of latching or locking mechanisms may be spaced 13 longitudinally along mast 15 such that the top drive 21 may be held at a variety 14 of desired, longitudinally spaced locations along mast 15 when the injector 17 is operative.
16 Referring to Figures 1 and 2, it should be understood that the angle 17 between the axis 44 of the injector 17 and the axis 42 of the top drive 21 is the 18 same as the angle of the mast 15 from vertical, so that the mast 15 when vertical 19 will have the axis 42 of the top drive 21 aligned with the well, and the mast 15 when inclined will have the axis 42 of the injector aligned with the same axis of 21 the well.
22 A universal rig is provided which can selectively handle and run different 23 types of pipe, coiled tubing, and other earth borehole equipment, thereby 24 eliminating the need for two rigs - one rig to use a top drive in the conventional 1 manner with threaded tubulars, and a separate coiled tubing injector rig to 2 perform coiled tubing operations.
3 For the embodiments described subsequently, the same numerals are 4 used to reference similar components. Referring to Figures 3-6, a mast 15 is pivotal with respect to the platform 12, but in this case the injector 17 is not fixed 6 to the mast, and instead a vertical slide member 68 is fixed to the mast, with the 7 axis of the slide member being vertical when the mast is in the coiled tubing 8 position as shown in Figure 3. The mechanical connection between the vertical 9 slide 68 and the mast does not interfere with the travel of the top drive 21 along the mast, but does allow the injector 17 and the guide 34 on top of the injector to 11 be lowered and raised with respect to the mast, as shown in Figure 3. This 12 feature allows the injector to be positioned desirably close to the rig floor 13 13 when injecting coiled tubing into the well, but also allows the injector 17 to be 14 elevated to a higher position so that relatively long tools can be positioned between the injector and the rig floor during service operations. Also, those 16 skilled in the art appreciate that the mast 15 may be pivoted to a travel position 17 so that the crown block 22 is closely adjacent the front of the trailer 1.
The slide 18 member 68 allows the injector to be moved to a selected location along the mast 19 when lowering the mast to a position for travel of the rig to another location.
In Figure 3, the bracket 62 secured to the injector 17 is thus siidable along 21 the axial length of the slide member 68, and this movement may be controlled by 22 a winch mechanism, by cylinders, by a chain drive mechanism powered by a 23 hydraulic motor, or by other suitable drive mechanism 70 for raising and lowering 24 the injector. Except as discussed herein, the other components of the rigs shown in Figures 3-6 may be similar to the Figures 1 and 2 rig components.
1 Referring now to Figure 5, the mast 15 and the top drive 21 are positioned 2 in line with the centerline 44 of the well, so that the rig may be used for 3 operations involving tubular joints with threaded ends. The axis 46 of the injector 4 17 is spaced from the axis 40 of the mast 15, but these axes are parallel rather than being inclined. Bracket 58 may thus fix the position of the injector 17 on the 6 mast.
7 Rather than pivot the mast, the embodiment as shown in Figures 4 and 5 8 moves the platform 12 and the mast 15 relative to the trailer 1 in a lateral 9 direction, so that the centerline 46 of the injector 17 may be positioned in line with the wellbore, as shown in Figure 4. Guide rails 78, 88 and 90 as shown in 11 Figure 6 and one or more hydraulic cylinders 74 as shown in Figures 4 and 5 12 may be used to laterally move the platform 12 and the mast 15 with respect to 13 the trailer 1 between the top drive position as shown in Figure 5 and the tubing 14 injector position as shown in Figure 4. When not in use, the mast 15 may still be pivoted so that the mast may be lowered to a position generally over the trailer 16 when transporting the rig to another well site. Figures 4 and 5 also depict a 17 plurality of ground engaging telescopic members 72 for reliably supporting the 18 trailer 1 and the equipment supported thereon when the rig is in use and when 19 the mast is being moved laterally between the top drive position and the tubing injector position. The same ground engaging member may be used for the other 21 embodiments described herein.
22 Figures 4 and 5 depict one or more hydraulic cylinders 74 for moving the 23 platform 12 and the mast 15 laterally between the coiled tubing position and the 24 top drive position. More particularly, the rod end of the cylinder 74 is connected to base frame 76 which slides on a top plate 78 of the trailer 1, as shown in 1 Figure 6. Slide plate 80, rectangular frame member 82, support member 84 and 2 support member 86 thus move as an assembly relative to the trailer. Spacer 3 plate 88 may be secured by the bolt and nut assembly 89 between the top trailer 4 plate 78 and the cap plate 90, with the plates 88 and 90 acting as a guide during lateral travel of the frame 76 between the tubing injector position and the top 6 drive position. A similar guide on the opposing side of the base frame 76 7 provides reliable movement between the two positions. Other types of guide 8 rails may be provided. In the Figure 4 and 5 embodiments, the stop member 56 9 may be eliminated, or may be used to stop pivoting movement of the mast when moved to the travel position.
11 In an alternate embodiment, a slide member 68 similar to that shown in 12 Figure 3 may be used in the Figures 4 and 5 embodiments, thereby allowing the 13 injector 17 to move vertically with respect to the mast. The slide member would, 14 however, preferably not have an axis inclined relative to the axis of the mast, but rather would have an axis parallel to and offset from the axis of the mast.
The 16 slide member could then be used to raise or lower the injector 17 when the mast 17 was in the coiled tubing position, as shown in Figure 4.
18 For the embodiments discussed above, the mast 15 had a vertical axis 19 when the rig is being used with the top drive to run threaded tubulars in the well, and the axis of the mast is tilted off-vertical or is moved laterally from the vertical 21 axis of the injector 17 when performing coiled tubing operations. It should be 22 understood that, in other applications, the axis of the mast, the top drive, and the 23 rotary table may each be inclined from vertical, but these axes remain aligned 24 with the axis of the borehole, which is also inclined. If the borehole were drilled so that the mast 15 was inclined 10° to the right as shown in Figure 1, the mast
-15-1 may be further inclined, e.g., to 28° from vertical, when performing coiled tubing 2 operations, since the axis of the injector 17 will be aligned 15° off-vertical at this 3 time so that the coiled tubing remains aligned with the axis of the borehole.
4 Tilting of a mast 15 from vertical is frequently done when performing certain types of directional or slant drilling operations, including drilling a borehole under 6 a river bed.
7 For the embodiment as shown in Figures 1 and 2, the injector 17 is 8 preferably fixedly secured to the mast 15 by the support plate 58 during coiled 9 tubing operations, threaded tubular operations, for switching from one operation to another operation. Similarly in Figure 3, injector 17 is secured to the slide 68 11 in a manner which allows vertical movement of the injector, but otherwise 12 restricts movement of the injector relative to the slide 68. While it is preferable 13 that the injector 17 be fixed to the mast 15 for operating in the Figure 1 or Figure 14 2 configurations, it is also preferable that the injector 17 be pivotable with respect to bracket 58 when the mast is laid down for transport of the rig. Mast 15 as
4 Tilting of a mast 15 from vertical is frequently done when performing certain types of directional or slant drilling operations, including drilling a borehole under 6 a river bed.
7 For the embodiment as shown in Figures 1 and 2, the injector 17 is 8 preferably fixedly secured to the mast 15 by the support plate 58 during coiled 9 tubing operations, threaded tubular operations, for switching from one operation to another operation. Similarly in Figure 3, injector 17 is secured to the slide 68 11 in a manner which allows vertical movement of the injector, but otherwise 12 restricts movement of the injector relative to the slide 68. While it is preferable 13 that the injector 17 be fixed to the mast 15 for operating in the Figure 1 or Figure 14 2 configurations, it is also preferable that the injector 17 be pivotable with respect to bracket 58 when the mast is laid down for transport of the rig. Mast 15 as
16 shown in Figure 1 may thus pivot in a counterclockwise direction, with the final
17 travel position of the mast being substantially horizontal and between the hubs of
18 the reel 4. When laying down or raising the mast 15, coiled tubing 30 on the reel
19 4 continues to be held in the injector 17 to counteract forces exerted on the coiled tubing by the reel 4. During this operation of preparing the rig for 21 transport, the axis of the injector 17 preferably may pivot with respect to the 22 bracket 58 to minimize bending forces on the coiled tubing and forces on the 23 injector. When laying down the mast, a pin or other catch mechanism may thus 24 be pulled to allow pivoting of the injector 17 relative to the bracket 58, and thereafter the injector 17 may pivot about an axis between the bracket and the 1 injector. When the mast is raised at a new well site for performing oilfield 2 operations, the pin may be reinserted or the lock mechanism activated to again 3 fix the injector 17 relative to the mast 58. In the Figure 3 embodiment, it is also 4 preferable that the fixed position of the slide 68 relative to the mast be released when laying down the mast for transport, allowing the slide 68 to pivot when 6 preparing for transport relative to the mast 15. When the mast is raised to the 7 activated position, the pin may be inserted or the lock mechanism activated so 8 that the slide 68 is fixed to the mast 15. In the Figure 3 embodiment, the injector 9 17 may also be allowed to pivot with respect to bracket 62. The ability of the injector to pivot with respect to the mast when laying the mast down for transport 11 and when raising the mast at the new well may also be utilized for the 12 embodiment as shown in Figures 4 and 5. The benefits of allowing selective 13 tilting of the injector relative to the mast is particularly important, however, for 14 embodiments wherein the mast is pivoted between the coiled tubing position and the threaded tubular position.
16 Referring now to Figure 7, the rig 110 is provided for selectively inserting 17 a coiled tubular or a threaded tubular through a rig floor and into a well.
The rig 18 includes a mast 112 extending upward from a rig base 114. The mast 112 is 19 pivotally movable between a threaded tubular position as shown in Figure 7 wherein the centerline of the mast is aligned with the well, and a coiled tubing 21 position wherein the injector 116 is aligned with the centerline of the well. A
22 powered drive, such as hydraulic cylinder 120, is provided for pivotally moving 23 the mast between the threaded tubular position and the coiled tubing position, for 24 laying down the mast for transportation, and for lowering the mast to pick up the injector. Figure 7 illustrates a top drive 122 movable along the axis of the mast 1 to insert the threaded tubular into the well, with the top drive having an axis 2 substantially aligned with the axis of the well. The injector 116 is supported on 3 the mast, and the injector axis is offset from the top drive axis.
4 The embodiment as shown in Figure 7 further illustrates a drawworks 124 supported on the rig base for moving the top drive along the axis of the mast, 6 and a trailer 126 structurally separate from the rig base 114 and supporting a 7 coiled tubing reel 128 and a powered injector lift mechanism 130 discussed 8 subsequently. The rig base 114 may thus be transferred to and from the well 9 site separate from the trailer 126, with the injector 116 and the reel 128 each supported on the trailer 126 during transportation.
11 Referring now to Figure 8, the rig is shown in a position wherein the mast 12 is substantially lowered by the hydraulic cylinders) 120 such that the mast is 13 positioned over the trailer 126 with the injector 116 supported on the trailer.
14 During transportation, it should thus be understood that coiled tubing extends between the reel 128 and the injector 116. When the trailer 126 is positioned at 16 the well site, the mast 112 is lowered, or if desired the lift 130 is first actuated to 17 raise the injector, then the mast is lowered. In either case, the function of the 18 powered lift 130 is to raise the injector 116 off the bed of the trailer 126 to a 19 position such that the injector 116 may be more easily attached to the mast.
More specifically, attachment may be achieved with a saddle 132 which is 21 secured to the mast and engages the injector, and a powered cylinders) 134, 22 which is shown in Figure 11, which is connected at one end to the mast 112 and 23 at the other end to the injector 116. Once the injector is removably connected to 24 the mast, the hydraulic cylinder or cylinders 120 may be actuated to raise the 1 mast and the injector attached to the mast to position the mast and the attached 2 injector as shown in Figure 7.
3 For the disclosed embodiment, the connector for removably connecting 4 the mast thus includes the saddle 132 and the hydraulic cylinders) 134, but in other embodiments may include other mechanisms for mechanically connecting 6 the mast and the injector. The powered lift 130 thus allows for the injector to be 7 conveniently attached to the mast without the mast interfering with the reel 8 on a trailer 126.
9 Figure 9 illustrates the trailer 126 removed from the well site, and the mast 112 fully lowered and disconnected at its lower end from the rig base, so 11 that the mast can be slid horizontally relative to the rig base. Figure 9 illustrates 12 the top drive 122 preferably still mounted on the mast, and illustrates the saddle 13 132 on the mast. In Figure 10, the mast is slid off the rig base, and is supported 14 on mast trailer 140.
Figure 11 shows a mechanism 152 for adjusting the position of the 16 injector 116 while positioned on the lift 130 so that the injector may be more 17 easily connected to the saddle 132 and thus to the mast 112. In this case, the 18 adjustment mechanism 152 may move the injector laterally in a direction 19 generally perpendicular to an axis of the mast, and/or horizontally in a generally longitudinal direction aligned with the mast, so that the saddle and the injector 21 are more easily connected. Figure 11 shows the injector 116 with the 22 gooseneck 117 attached thereto. The injector is supported on the lift mechanism 23 130 as previously discussed. The lift mechanism includes a pivot member 154 24 pivotally connected to a lift base 155 and a lift top 156, a pair of hydraulic cylinders 157 are each connected at one end to the pivot member 154, and to 1 the other end to either the base 155 or the top 156. Actuation of the hydraulic 2 cylinders 157 may thus raise the table 156 with respect to the base 155, and 3 may also selectively tilt the table 156 relative to the base 155.
4 To achieve adjustment of the injector 116 relative to the table 156, one or more cylinders 158 may be provided for moving the injector to the left or to the 6 right as shown in Figure 15, so that the saddle will be aligned with the injector for 7 connecting the injector to the mast. A top plate may be attached to the table to 8 facilitate sliding movement of the injector relative to the table 156, and a plurality 9 of bolt heads may serve as stops to connect these plates. Conventional stops may be used to prohibit the injector from inadvertently sliding off the top plate or 11 the table 156.
12 Referring to the end view of the lift 130 as shown in Figure 12, the 13 conceptualized injector 116 is depicted on the table 156. A pair of cylinders 159 14 may be used to move the base 155 laterally in a direction substantially perpendicular to movement caused by the cylinder 158, so that the base 155, 16 the cylinders 154, 157, 158 and the table top 156 all move laterally to align the 17 injector with the saddle and thereby more easily connect the injector to the mast.
18 Once the injector has been properly connected to the saddle 132, the cylinder 19 134 may be connected to both the mast and the injector to support the opposing end of the injector as it is lifted by the mast to the substantially vertical position.
21 In alternative embodiments, the saddle may be adjusted relative to the mast, 22 such that the saddle adjustment, either alone or in conjunction with an 23 adjustment mechanism as shown in Figures 11 and 12, may be used to more 24 easily connect the injector on the lift to the mast.
16 Referring now to Figure 7, the rig 110 is provided for selectively inserting 17 a coiled tubular or a threaded tubular through a rig floor and into a well.
The rig 18 includes a mast 112 extending upward from a rig base 114. The mast 112 is 19 pivotally movable between a threaded tubular position as shown in Figure 7 wherein the centerline of the mast is aligned with the well, and a coiled tubing 21 position wherein the injector 116 is aligned with the centerline of the well. A
22 powered drive, such as hydraulic cylinder 120, is provided for pivotally moving 23 the mast between the threaded tubular position and the coiled tubing position, for 24 laying down the mast for transportation, and for lowering the mast to pick up the injector. Figure 7 illustrates a top drive 122 movable along the axis of the mast 1 to insert the threaded tubular into the well, with the top drive having an axis 2 substantially aligned with the axis of the well. The injector 116 is supported on 3 the mast, and the injector axis is offset from the top drive axis.
4 The embodiment as shown in Figure 7 further illustrates a drawworks 124 supported on the rig base for moving the top drive along the axis of the mast, 6 and a trailer 126 structurally separate from the rig base 114 and supporting a 7 coiled tubing reel 128 and a powered injector lift mechanism 130 discussed 8 subsequently. The rig base 114 may thus be transferred to and from the well 9 site separate from the trailer 126, with the injector 116 and the reel 128 each supported on the trailer 126 during transportation.
11 Referring now to Figure 8, the rig is shown in a position wherein the mast 12 is substantially lowered by the hydraulic cylinders) 120 such that the mast is 13 positioned over the trailer 126 with the injector 116 supported on the trailer.
14 During transportation, it should thus be understood that coiled tubing extends between the reel 128 and the injector 116. When the trailer 126 is positioned at 16 the well site, the mast 112 is lowered, or if desired the lift 130 is first actuated to 17 raise the injector, then the mast is lowered. In either case, the function of the 18 powered lift 130 is to raise the injector 116 off the bed of the trailer 126 to a 19 position such that the injector 116 may be more easily attached to the mast.
More specifically, attachment may be achieved with a saddle 132 which is 21 secured to the mast and engages the injector, and a powered cylinders) 134, 22 which is shown in Figure 11, which is connected at one end to the mast 112 and 23 at the other end to the injector 116. Once the injector is removably connected to 24 the mast, the hydraulic cylinder or cylinders 120 may be actuated to raise the 1 mast and the injector attached to the mast to position the mast and the attached 2 injector as shown in Figure 7.
3 For the disclosed embodiment, the connector for removably connecting 4 the mast thus includes the saddle 132 and the hydraulic cylinders) 134, but in other embodiments may include other mechanisms for mechanically connecting 6 the mast and the injector. The powered lift 130 thus allows for the injector to be 7 conveniently attached to the mast without the mast interfering with the reel 8 on a trailer 126.
9 Figure 9 illustrates the trailer 126 removed from the well site, and the mast 112 fully lowered and disconnected at its lower end from the rig base, so 11 that the mast can be slid horizontally relative to the rig base. Figure 9 illustrates 12 the top drive 122 preferably still mounted on the mast, and illustrates the saddle 13 132 on the mast. In Figure 10, the mast is slid off the rig base, and is supported 14 on mast trailer 140.
Figure 11 shows a mechanism 152 for adjusting the position of the 16 injector 116 while positioned on the lift 130 so that the injector may be more 17 easily connected to the saddle 132 and thus to the mast 112. In this case, the 18 adjustment mechanism 152 may move the injector laterally in a direction 19 generally perpendicular to an axis of the mast, and/or horizontally in a generally longitudinal direction aligned with the mast, so that the saddle and the injector 21 are more easily connected. Figure 11 shows the injector 116 with the 22 gooseneck 117 attached thereto. The injector is supported on the lift mechanism 23 130 as previously discussed. The lift mechanism includes a pivot member 154 24 pivotally connected to a lift base 155 and a lift top 156, a pair of hydraulic cylinders 157 are each connected at one end to the pivot member 154, and to 1 the other end to either the base 155 or the top 156. Actuation of the hydraulic 2 cylinders 157 may thus raise the table 156 with respect to the base 155, and 3 may also selectively tilt the table 156 relative to the base 155.
4 To achieve adjustment of the injector 116 relative to the table 156, one or more cylinders 158 may be provided for moving the injector to the left or to the 6 right as shown in Figure 15, so that the saddle will be aligned with the injector for 7 connecting the injector to the mast. A top plate may be attached to the table to 8 facilitate sliding movement of the injector relative to the table 156, and a plurality 9 of bolt heads may serve as stops to connect these plates. Conventional stops may be used to prohibit the injector from inadvertently sliding off the top plate or 11 the table 156.
12 Referring to the end view of the lift 130 as shown in Figure 12, the 13 conceptualized injector 116 is depicted on the table 156. A pair of cylinders 159 14 may be used to move the base 155 laterally in a direction substantially perpendicular to movement caused by the cylinder 158, so that the base 155, 16 the cylinders 154, 157, 158 and the table top 156 all move laterally to align the 17 injector with the saddle and thereby more easily connect the injector to the mast.
18 Once the injector has been properly connected to the saddle 132, the cylinder 19 134 may be connected to both the mast and the injector to support the opposing end of the injector as it is lifted by the mast to the substantially vertical position.
21 In alternative embodiments, the saddle may be adjusted relative to the mast, 22 such that the saddle adjustment, either alone or in conjunction with an 23 adjustment mechanism as shown in Figures 11 and 12, may be used to more 24 easily connect the injector on the lift to the mast.
-20-1 Figure 13 discloses an alternate embodiment wherein the mast 112 and 2 the top drive 122 are positioned in line with the centerline of the well so that the 3 rig may be used for operation involving tubular joints with threaded ends.
The 4 axis of the injector 116 is spaced from the axis of the mast to conduct coiled tubing operations. Rather than pivot the mast between an operative position for 6 coiled tubing operations and an operative position for threaded tubing 7 operations, this embodiment moves the mast 112 relative to the structure 114 in 8 a lateral direction so that the centerline of the injector may be positioned over the 9 wellbore for coiled tubing operations, and the centerline of the mast positioned over the wellbore for threaded tubular operations. One or more hydraulic 11 cylinders 120 are still used to lift the mast and the injector to a substantially 12 vertical position, and one or more hydraulic cylinders 160 may be provided for 13 moving the mast laterally between the coiled tubing position and the top drive 14 position. A plurality of outriggers 162 may level and stabilize the rig base or structure 114 on the ground. Further details regarding this embodiment are 16 discussed above with respect to Figures 4 and 5.
17 Figure 14 depicts yet another embodiment of the invention, with a coiled 18 tubing lubricator housing 162 with a centerline or axis that is not coincident with 19 the axis of the wellbore or the mast 112, for guiding the coiled tubing through an arc and into the wellbore. The coiled tubing injector may thus be attached to the
The 4 axis of the injector 116 is spaced from the axis of the mast to conduct coiled tubing operations. Rather than pivot the mast between an operative position for 6 coiled tubing operations and an operative position for threaded tubing 7 operations, this embodiment moves the mast 112 relative to the structure 114 in 8 a lateral direction so that the centerline of the injector may be positioned over the 9 wellbore for coiled tubing operations, and the centerline of the mast positioned over the wellbore for threaded tubular operations. One or more hydraulic 11 cylinders 120 are still used to lift the mast and the injector to a substantially 12 vertical position, and one or more hydraulic cylinders 160 may be provided for 13 moving the mast laterally between the coiled tubing position and the top drive 14 position. A plurality of outriggers 162 may level and stabilize the rig base or structure 114 on the ground. Further details regarding this embodiment are 16 discussed above with respect to Figures 4 and 5.
17 Figure 14 depicts yet another embodiment of the invention, with a coiled 18 tubing lubricator housing 162 with a centerline or axis that is not coincident with 19 the axis of the wellbore or the mast 112, for guiding the coiled tubing through an arc and into the wellbore. The coiled tubing injector may thus be attached to the
21 mast when the mast is lowered to substantially the position as shown in Figure 8,
22 and the mast with the coiled tubing injector then raised to the substantially
23 vertical position. One or more cylinders 120 are thus used to lower the mast, the
24 mast then connected to the injector, then the mast with the injector raised to a substantially vertical position. As disclosed in U.S. Application 60/723,111, the 1 injector may be positioned on a mast when it is in a substantially vertical 2 position, and a winch then used to raise a lubricator 162 for attachment to the 3 injector. Alternatively, a lubricator 162 and the injector 116 may be attached as 4 an assembly to the mast when the position substantially as shown in Figure 8, and the mast raised to raise the injector and the lubricator. As shown in Figure 6 17, the central axis of the injector 116 is canted relative to the axis of the mast 7 112, which is substantially vertical and aligned with the axis of the well.
The axis 8 of the lubricator 162 is slightly curved, so that rollers, guides, or other members 9 position the coiled tubing as it exits the lubricator with the axis of the coiled tubing being generally aligned with the axis of the well.
11 Those skilled in the art will appreciate that the rig as shown in Figure 7-12 may be revised so that in other embodiments the injector may be movably 13 attached to the mast and a powered drive used to raise the injector with the 14 mast, wherein the injector and the reel are provided on the same structure as the rig base. In still other embodiments, a mast may be used to raise and lower the 16 injector from a transportation position to an operative position, and once the 17 mast and injector are raised, the mast may be moved laterally with another or 18 the same powered drive mechanism to slide the mast between the tubing 19 injector position and the coiled tubing position. In still other embodiments, the mast may be used to raise the injector supported on the same rig base as the 21 mast.
22 The rig as disclosed herein may be used to accomplish numerous 23 different earth borehole operations. In the case of employing the coiled tubing 24 injector, the rig may be used to drill using downhole mud motors, such drilling being both directional and straight hole. Additionally, coiled tubing may be used 1 in various completion operations, such as fracturing, acidizing, cleanouts, fishing 2 operations, using coiled tubing as a velocity string, etc. The coiled tubing can 3 also be run as a production tubing. With respect to typical top drive operations, 4 conventional drilling can be done, casing can be run, and completion and well servicing operations as described above with respect of coiled tubing can also 6 be accomplished. Additionally, the top drive can be used to run conventional 7 production tubing.
8 Circulation of fluid through the coiled tubing string occurs during drilling 9 and preferably during insertion of the coiled tubing into the well, with the circulating fluid flowing between the interior of the tubing string and the annulus 11 about the tubing string. Circulation when installing a tubing string is preferable in 12 order to better convey the string into the well and to provide proper hole 13 cleaning.
14 For many applications, the coiled tubing once installed in the well provides a barrier between the annulus about the tubing and the interior of the tubing.
In 16 other embodiments, the coiled tubing is not a solid tubular, and instead may be 17 slotted or perforated to allow fluid to flow into the interior of the casing string.
18 The coiled tubing may be made from various materials, including a carbon 19 alloy steel or a carbon fiber material. Various types of guide devices, cementing stage tools, driver shoes, packers, perforating guns, correlation indicators, and 21 cross-over tools may be used in conjunction with the coiled tubing string.
22 The coiled tubing may be conveyed into a wellbore vertically, directionally, 23 or in a substantially horizontal plane. Applied internal pressure within the coiled 24 tubing may be produced with an energized fluid or gas. Air, nitrogen, natural gas, water, compatible liquid hydrocarbons, drilling muds, and other mediums 1 may be used for pumping into the coiled tubing string utilizing pumps or 2 compressors common in the oilfield industry.
3 The word "carrier" as used herein is intended to mean any structure, be it 4 portable or fixed, whether on land or offshore, to which the mast can be pivotally or slidably attached, which will support the mast and the attendant equipment 6 used in the rig.
7 The term "rig base" as used herein is intended to mean any structure to 8 which the mast may be attached for support in a substantially vertical position.
9 The term "trailer" as used herein refers to structure which, during transportation, is separate from the rig base and is used to support the coiled tubing reel and 11 the injector during transportation. The trailer may include any wheeled carrier, 12 self-propelled or pulled by a tractor or other drive source, and may also be skid 13 mounted for transport. The substructure which a mast is mounted may include a 14 wheel structure, but also may be skid mounted.
The term "powered lift" as used herein refers to any type of powered 16 device for selectively moving the injector so that the injector may be more easily 17 attached to and detached from the mast.
18 The above discussion referred to centerlines of the mast, the top drive, 19 the injector, and the borehole, frequently referencing certain axes as being aligned or out of alignment at different times. It should be understood that when 21 reference is made to the axes of equipment being in alignment, exact or precise 22 alignment of the equipment axes is not required. Rather, it should be 23 understood that the axes of equipment which are aligned are substantially in 24 alignment, and any misalignment creates no significant problems with respect to the passage of the tubulars between the equipment or the borehole.
1 The term "injector" as used herein is meant to refer to any powered 2 equipment for moving coiled tubing into or out of a well. Conventional injectors 3 were discussed above and are well known in the art, but other types of injectors 4 use different techniques for moving coiled tubing into and out of the well.
All equipment of the type supportable on a mast for moving the coiled tubing into 6 and out of a well are thus considered to be an injector. Similarly, the term "top 7 drive" as used herein refers to any drive mechanism positioned above the rig 8 floor for rotating a threaded tubular. The top drive is movable along the axis of 9 the mast, as disclosed herein, to insert the threaded tubular into the well, and various types of top drives may be provided with a suitable mechanism for 11 moving the top drive along the mast.
12 It will be understood, that the present invention is not limited to the use in 13 oilfield operations but can be used in water well drilling, mining operations, in 14 drilling injection wells, etc. Also, as noted above, the apparatus of the present invention is not limited to land earth borehole operations but can be used, as 16 well, on offshore drilling and production platforms.
17 Although specific embodiments of the invention have been described 18 herein in some detail, this has been done solely for the purposes of explaining 19 the various aspects of the invention, and is not intended to limit the scope of the invention as defined in the claims which follow. Those skilled in the art will 21 understand that the embodiment shown and described is exemplary, and various 22 other substitutions, alterations and modifications, including but not limited to 23 those design alternatives specifically discussed herein, may be made in the 24 practice of the invention without departing from its scope.
The axis 8 of the lubricator 162 is slightly curved, so that rollers, guides, or other members 9 position the coiled tubing as it exits the lubricator with the axis of the coiled tubing being generally aligned with the axis of the well.
11 Those skilled in the art will appreciate that the rig as shown in Figure 7-12 may be revised so that in other embodiments the injector may be movably 13 attached to the mast and a powered drive used to raise the injector with the 14 mast, wherein the injector and the reel are provided on the same structure as the rig base. In still other embodiments, a mast may be used to raise and lower the 16 injector from a transportation position to an operative position, and once the 17 mast and injector are raised, the mast may be moved laterally with another or 18 the same powered drive mechanism to slide the mast between the tubing 19 injector position and the coiled tubing position. In still other embodiments, the mast may be used to raise the injector supported on the same rig base as the 21 mast.
22 The rig as disclosed herein may be used to accomplish numerous 23 different earth borehole operations. In the case of employing the coiled tubing 24 injector, the rig may be used to drill using downhole mud motors, such drilling being both directional and straight hole. Additionally, coiled tubing may be used 1 in various completion operations, such as fracturing, acidizing, cleanouts, fishing 2 operations, using coiled tubing as a velocity string, etc. The coiled tubing can 3 also be run as a production tubing. With respect to typical top drive operations, 4 conventional drilling can be done, casing can be run, and completion and well servicing operations as described above with respect of coiled tubing can also 6 be accomplished. Additionally, the top drive can be used to run conventional 7 production tubing.
8 Circulation of fluid through the coiled tubing string occurs during drilling 9 and preferably during insertion of the coiled tubing into the well, with the circulating fluid flowing between the interior of the tubing string and the annulus 11 about the tubing string. Circulation when installing a tubing string is preferable in 12 order to better convey the string into the well and to provide proper hole 13 cleaning.
14 For many applications, the coiled tubing once installed in the well provides a barrier between the annulus about the tubing and the interior of the tubing.
In 16 other embodiments, the coiled tubing is not a solid tubular, and instead may be 17 slotted or perforated to allow fluid to flow into the interior of the casing string.
18 The coiled tubing may be made from various materials, including a carbon 19 alloy steel or a carbon fiber material. Various types of guide devices, cementing stage tools, driver shoes, packers, perforating guns, correlation indicators, and 21 cross-over tools may be used in conjunction with the coiled tubing string.
22 The coiled tubing may be conveyed into a wellbore vertically, directionally, 23 or in a substantially horizontal plane. Applied internal pressure within the coiled 24 tubing may be produced with an energized fluid or gas. Air, nitrogen, natural gas, water, compatible liquid hydrocarbons, drilling muds, and other mediums 1 may be used for pumping into the coiled tubing string utilizing pumps or 2 compressors common in the oilfield industry.
3 The word "carrier" as used herein is intended to mean any structure, be it 4 portable or fixed, whether on land or offshore, to which the mast can be pivotally or slidably attached, which will support the mast and the attendant equipment 6 used in the rig.
7 The term "rig base" as used herein is intended to mean any structure to 8 which the mast may be attached for support in a substantially vertical position.
9 The term "trailer" as used herein refers to structure which, during transportation, is separate from the rig base and is used to support the coiled tubing reel and 11 the injector during transportation. The trailer may include any wheeled carrier, 12 self-propelled or pulled by a tractor or other drive source, and may also be skid 13 mounted for transport. The substructure which a mast is mounted may include a 14 wheel structure, but also may be skid mounted.
The term "powered lift" as used herein refers to any type of powered 16 device for selectively moving the injector so that the injector may be more easily 17 attached to and detached from the mast.
18 The above discussion referred to centerlines of the mast, the top drive, 19 the injector, and the borehole, frequently referencing certain axes as being aligned or out of alignment at different times. It should be understood that when 21 reference is made to the axes of equipment being in alignment, exact or precise 22 alignment of the equipment axes is not required. Rather, it should be 23 understood that the axes of equipment which are aligned are substantially in 24 alignment, and any misalignment creates no significant problems with respect to the passage of the tubulars between the equipment or the borehole.
1 The term "injector" as used herein is meant to refer to any powered 2 equipment for moving coiled tubing into or out of a well. Conventional injectors 3 were discussed above and are well known in the art, but other types of injectors 4 use different techniques for moving coiled tubing into and out of the well.
All equipment of the type supportable on a mast for moving the coiled tubing into 6 and out of a well are thus considered to be an injector. Similarly, the term "top 7 drive" as used herein refers to any drive mechanism positioned above the rig 8 floor for rotating a threaded tubular. The top drive is movable along the axis of 9 the mast, as disclosed herein, to insert the threaded tubular into the well, and various types of top drives may be provided with a suitable mechanism for 11 moving the top drive along the mast.
12 It will be understood, that the present invention is not limited to the use in 13 oilfield operations but can be used in water well drilling, mining operations, in 14 drilling injection wells, etc. Also, as noted above, the apparatus of the present invention is not limited to land earth borehole operations but can be used, as 16 well, on offshore drilling and production platforms.
17 Although specific embodiments of the invention have been described 18 herein in some detail, this has been done solely for the purposes of explaining 19 the various aspects of the invention, and is not intended to limit the scope of the invention as defined in the claims which follow. Those skilled in the art will 21 understand that the embodiment shown and described is exemplary, and various 22 other substitutions, alterations and modifications, including but not limited to 23 those design alternatives specifically discussed herein, may be made in the 24 practice of the invention without departing from its scope.
-25-
Claims (35)
1. A rig for selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well, the rig comprising:
a mast extending upward from the rig base;
a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in a threaded tubular position wherein the top drive is operative;
an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis when the mast is in a coiled tubing position wherein the top drive is operative;
a connector for removably connecting the mast and the injector; and a powered drive for selectively raising the mast and the injector supported on the mast.
a mast extending upward from the rig base;
a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in a threaded tubular position wherein the top drive is operative;
an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis when the mast is in a coiled tubing position wherein the top drive is operative;
a connector for removably connecting the mast and the injector; and a powered drive for selectively raising the mast and the injector supported on the mast.
2. The rig as defined in Claim 1, further comprising:
the injector and a coiled tubing reel are supported on a trailer separate from the rig base during transportation; and the powered drive lifts the injector with the mast from the trailer.
the injector and a coiled tubing reel are supported on a trailer separate from the rig base during transportation; and the powered drive lifts the injector with the mast from the trailer.
3. The rig as defined in Claim 2, further comprising:
a powered lift for raising the injector upward relative to the trailer for connection with the mast.
a powered lift for raising the injector upward relative to the trailer for connection with the mast.
4. The rig as defined in Claim 1, further comprising:
at least part of the connector for removably connecting the mast and the injector being interconnected with the mast before connection to the injector;
and an adjustment mechanism for adjusting the position of the connector relative to the mast for interconnecting the connector and the injector.
at least part of the connector for removably connecting the mast and the injector being interconnected with the mast before connection to the injector;
and an adjustment mechanism for adjusting the position of the connector relative to the mast for interconnecting the connector and the injector.
5. The rig as defined in Claim 2, further comprising:
an adjustment mechanism for varying the position of the injector relative to the trailer to align the injector with the connector for connection to the mast.
an adjustment mechanism for varying the position of the injector relative to the trailer to align the injector with the connector for connection to the mast.
6. The rig as defined in Claim 1, wherein the connector includes an injector support secured to the mast for supporting the injector when the mast is raised.
7. The rig as defined in Claim 1, wherein the connector includes a cylinder secured to the mast and to the injector for supporting the injector on the mast.
8. The rig as defined in Claim 1, wherein the mast is pivotable relative to the rig floor by the powered drive between the threaded tubular position and the coiled tubing position.
9. A rig as defined in Claim 8, further comprising:
the powered drive includes one or more fluid powered cylinders for pivoting the mast between the threaded tubular position and the coiled tubing position.
the powered drive includes one or more fluid powered cylinders for pivoting the mast between the threaded tubular position and the coiled tubing position.
10. The rig as defined in Claim 1, further comprising:
a guide rail for guiding lateral movement of the mast with respect to the rig floor between the threaded tubular position and the coiled tubing position.
a guide rail for guiding lateral movement of the mast with respect to the rig floor between the threaded tubular position and the coiled tubing position.
11. The rig as defined in Claim 10, further comprising:
one or more fluid powered cylinders for moving the mast laterally between the threaded tubular position and the coiled tubing position.
one or more fluid powered cylinders for moving the mast laterally between the threaded tubular position and the coiled tubing position.
12. The rig as defined in Claim 1, further comprising:
a lubricator having an upper end secured to the injector, the lubricator having a central axis offset from the axis of the well to pass coiled tubing into the well when the mast is in the coiled tubing position.
a lubricator having an upper end secured to the injector, the lubricator having a central axis offset from the axis of the well to pass coiled tubing into the well when the mast is in the coiled tubing position.
13. The rig as defined in Claim 1, wherein the coiled tubing position of the mast is the same as a threaded tubular position of a mast.
14. The rig as defined in Claim 12, wherein the lubricator and the injector are raised together with the mast.
15. The rig as defined in Claim 1, further comprising:
a drawworks supported on the rig base for moving the top drive along the axis of the mast.
a drawworks supported on the rig base for moving the top drive along the axis of the mast.
16. A rig for selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well, the rig comprising:
a mast extending upward from the rig base;
a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of a rig table when the mast is in a threaded tubular position wherein the top drive is operative;
an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis when the mast is in the coiled tubing position wherein the top drive is operative;
a connector for removably connecting the mast and the injector; and the injector and a coiled tubing reel being supported on a trailer separate from the rig base during transportation;
a powered lift for raising the injector upward relative to the trailer for connection with the mast; and a powered drive for selectively raising the mast and the injector supported on the mast.
a mast extending upward from the rig base;
a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of a rig table when the mast is in a threaded tubular position wherein the top drive is operative;
an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis when the mast is in the coiled tubing position wherein the top drive is operative;
a connector for removably connecting the mast and the injector; and the injector and a coiled tubing reel being supported on a trailer separate from the rig base during transportation;
a powered lift for raising the injector upward relative to the trailer for connection with the mast; and a powered drive for selectively raising the mast and the injector supported on the mast.
17. The rig as defined in Claim 16, further comprising:
a drawworks supported on the rig base for moving the top drive along the axis of the mast.
a drawworks supported on the rig base for moving the top drive along the axis of the mast.
18. The rig as defined in Claim 16, further comprising:
a slide member supported on the mast for guiding vertical movement of the injector relative to the rig floor when the mast is in the coiled tubing position;
and a drive member for selectively moving the coiled tubing injector vertically along the slide member.
a slide member supported on the mast for guiding vertical movement of the injector relative to the rig floor when the mast is in the coiled tubing position;
and a drive member for selectively moving the coiled tubing injector vertically along the slide member.
19. The rig as defined in Claim 16, further comprising:
at least part of the connector for removably connecting the mast and the injector being interconnected with the mast before connection to the injector;
and an adjustment mechanism for adjusting the position of the connector relative to the mast for interconnecting the connector and the injector.
at least part of the connector for removably connecting the mast and the injector being interconnected with the mast before connection to the injector;
and an adjustment mechanism for adjusting the position of the connector relative to the mast for interconnecting the connector and the injector.
20. The rig as defined in Claim 16, further comprising:
an adjustment mechanism for varying the position of the injector relative to the trailer to align the injector with the connector for connection to the mast.
an adjustment mechanism for varying the position of the injector relative to the trailer to align the injector with the connector for connection to the mast.
21. The rig as defined in Claim 16, wherein the mast is pivotable relative to the rig floor by the powered drive between the threaded tubular position and the coiled tubing position.
22. The rig as defined in Claim 16, further comprising:
a guide rail for guiding lateral movement of the mast with respect to the rig floor between the threaded tubular position and the coiled tubing position;
and one or more fluid powered cylinders for moving the mast laterally between the threaded tubular position and the coiled tubing position.
a guide rail for guiding lateral movement of the mast with respect to the rig floor between the threaded tubular position and the coiled tubing position;
and one or more fluid powered cylinders for moving the mast laterally between the threaded tubular position and the coiled tubing position.
23. A rig for selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well, the rig comprising:
a mast extending upward from the rig base and movable between a threaded tubular position and a coiled tubing position;
a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in the threaded tubular position;
an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis and substantially aligned with the axis of the well when the mast is in the coiled tubing position;
the injector and a coiled tubing reel being supported on a trailer separate from the rig base during transportation;
a connector for removably connecting the mast and the injector;
a fluid powered cylinder for moving the injector relative to the mast and connecting the mast and the injector; and a drawworks for moving the top drive along the axis of the mast.
a mast extending upward from the rig base and movable between a threaded tubular position and a coiled tubing position;
a top drive movable along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in the threaded tubular position;
an injector supported on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis and substantially aligned with the axis of the well when the mast is in the coiled tubing position;
the injector and a coiled tubing reel being supported on a trailer separate from the rig base during transportation;
a connector for removably connecting the mast and the injector;
a fluid powered cylinder for moving the injector relative to the mast and connecting the mast and the injector; and a drawworks for moving the top drive along the axis of the mast.
24. The rig as defined in Claim 23, further comprising:
a powered lift for raising the injector upward relative to the trailer for connection with the mast.
a powered lift for raising the injector upward relative to the trailer for connection with the mast.
25. A rig as defined in Claim 23, further comprising:
a powered drive for selectively raising the mast and the injector supported on the mast.
a powered drive for selectively raising the mast and the injector supported on the mast.
26. A method of selectively inserting coiled tubing or a threaded tubular through a rig floor and into a well, the method comprising:
providing a mast extending upward from the rig base;
moving a top drive along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in a threaded tubular position;
supporting an injector on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis and substantially aligned with the axis of the well when the mast is in a coiled tubing position;
removably connecting the mast and the injector; and powering a drive unit to raise the mast and the injector supported on the mast.
providing a mast extending upward from the rig base;
moving a top drive along an axis of the mast to insert the threaded tubular in the well, the top drive having a top drive axis substantially aligned with an axis of the well when the mast is in a threaded tubular position;
supporting an injector on the mast to insert the coiled tubing into the well, the injector having an injector axis offset from the top drive axis and substantially aligned with the axis of the well when the mast is in a coiled tubing position;
removably connecting the mast and the injector; and powering a drive unit to raise the mast and the injector supported on the mast.
27. The method as defined in Claim 26, further comprising:
supporting the injector and a coiled tubing reel on a trailer separate from the rig base; and using the mast to lift the injector from the trailer.
supporting the injector and a coiled tubing reel on a trailer separate from the rig base; and using the mast to lift the injector from the trailer.
28. The method as defined in Claim 27, further comprising:
lifting the injector before connecting the mast and the injector.
lifting the injector before connecting the mast and the injector.
29. The method as defined in Claim 26, further comprising:
selectively moving the mast between the threaded tubular position and the coiled tubing position.
selectively moving the mast between the threaded tubular position and the coiled tubing position.
30. The method as defined in Claim 26, further comprising:
moving the top drive along the axis of the mast with a drawworks.
moving the top drive along the axis of the mast with a drawworks.
31. The method as defined in Claim 26, further comprising:
pivoting the mast relative to the rig floor between the threaded tubular position and the coiled tubing position.
pivoting the mast relative to the rig floor between the threaded tubular position and the coiled tubing position.
32. The method as defined in Claim 26, further comprising:
removably connecting at least part of the connector to the mast before connection to the lubricator; and adjusting the position of the connector relative to the mast for interconnecting the connector and the injector.
removably connecting at least part of the connector to the mast before connection to the lubricator; and adjusting the position of the connector relative to the mast for interconnecting the connector and the injector.
33. The method as defined in Claim 27, further comprising:
adjusting the position of the injector relative to the trailer to align the injector with the connector for connection to the mast.
adjusting the position of the injector relative to the trailer to align the injector with the connector for connection to the mast.
34. The method as defined in Claim 26, further comprising:
guiding lateral movement of the mast with respect to the rig floor between the threaded tubular positron and the coiled tubing position; and moving the mast laterally between the threaded tubular position and the coiled tubing position.
guiding lateral movement of the mast with respect to the rig floor between the threaded tubular positron and the coiled tubing position; and moving the mast laterally between the threaded tubular position and the coiled tubing position.
35. The method as defined in Claim 26, further comprising:
securing an upper end of a lubricator to the injector, the lubricator having a central axis offset from the axis of the well to pass coiled tubing into the well when the mast is in the coiled tubing position.
securing an upper end of a lubricator to the injector, the lubricator having a central axis offset from the axis of the well to pass coiled tubing into the well when the mast is in the coiled tubing position.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/165,931 US7182140B2 (en) | 2005-06-24 | 2005-06-24 | Coiled tubing/top drive rig and method |
| US11/165,931 | 2005-06-24 | ||
| US72311105P | 2005-10-03 | 2005-10-03 | |
| US60/723,111 | 2005-10-03 | ||
| US11/294,036 US7185708B2 (en) | 2005-06-24 | 2005-12-05 | Coiled tubing/top drive rig and method |
| US11/294,036 | 2005-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2533969A1 CA2533969A1 (en) | 2006-12-24 |
| CA2533969C true CA2533969C (en) | 2009-10-20 |
Family
ID=37561663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002533969A Active CA2533969C (en) | 2005-06-24 | 2006-01-25 | Coiled tubing/top drive rig and method |
Country Status (7)
| Country | Link |
|---|---|
| US (3) | US7185708B2 (en) |
| EP (1) | EP1893842A4 (en) |
| AU (1) | AU2006261964B2 (en) |
| CA (1) | CA2533969C (en) |
| MX (1) | MX2008000334A (en) |
| NO (1) | NO20080054L (en) |
| WO (1) | WO2007002491A2 (en) |
Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003338A1 (en) * | 2002-06-28 | 2004-01-08 | Vetco Aibel As | An assembly and a method for intervention of a subsea well |
| US6860337B1 (en) * | 2003-01-24 | 2005-03-01 | Helmerich & Payne, Inc. | Integrated mast and top drive for drilling rig |
| US6973979B2 (en) * | 2003-04-15 | 2005-12-13 | Savanna Energy Services Corp. | Drilling rig apparatus and downhole tool assembly system and method |
| US20060231269A1 (en) * | 2005-04-15 | 2006-10-19 | Wood Thomas D | Apparatus and method for performing earth borehole operations |
| US20060231268A1 (en) * | 2005-04-15 | 2006-10-19 | Wood Thomas D | Apparatus and method for performing earth borehole operations |
| US7845398B2 (en) * | 2005-04-15 | 2010-12-07 | Coil Tubing Technologies, Llc | Apparatus for performing earth borehole operations |
| US7185708B2 (en) * | 2005-06-24 | 2007-03-06 | Xtreme Coil Drilling Corp. | Coiled tubing/top drive rig and method |
| US7481280B2 (en) * | 2005-06-20 | 2009-01-27 | 1243939 Alberta Ltd. | Method and apparatus for conducting earth borehole operations using coiled casing |
| US8191637B2 (en) * | 2005-12-05 | 2012-06-05 | Xtreme Coil Drilling Corp. | Method and apparatus for conducting earth borehole operations |
| CA2529921C (en) | 2005-12-13 | 2012-06-05 | Foremost Industries Inc. | Coiled tubing injector system |
| US8408288B2 (en) * | 2006-03-07 | 2013-04-02 | Xtreme Drilling And Coil Services Corp. | System for conducting jointed pipe and coiled tubing operations |
| US7640999B2 (en) * | 2006-07-25 | 2010-01-05 | Schlumberger Technology Corporation | Coiled tubing and drilling system |
| US7798237B2 (en) * | 2007-05-07 | 2010-09-21 | Nabors Alaska Drilling, Inc. | Enclosed coiled tubing rig |
| EP2503094A1 (en) | 2007-06-15 | 2012-09-26 | Weatherford Lamb, Inc. | Control line running system |
| EP2167781B1 (en) * | 2007-06-26 | 2017-01-25 | Wood Group Norway AS | Well apparatus |
| CA2595666A1 (en) * | 2007-07-25 | 2009-01-25 | Foremost Industries Ltd. | Modular coiled tubing and sectional pipe drilling rig |
| GB0803231D0 (en) * | 2008-02-22 | 2008-04-02 | Qserv Ltd | Apparatus and method |
| EP2133508B2 (en) * | 2008-06-13 | 2015-03-18 | BAUER Maschinen GmbH | Construction device with extendable mast and method for operation of same |
| JP5159593B2 (en) * | 2008-12-24 | 2013-03-06 | 日本車輌製造株式会社 | Pile driver |
| ES2770784T3 (en) * | 2010-02-03 | 2020-07-03 | Nextech Drilling Ltd | System and method to carry out core drilling and extraction operations |
| US8720582B2 (en) | 2010-05-19 | 2014-05-13 | Baker Hughes Incorporated | Apparatus and methods for providing tubing into a subsea well |
| GB201014035D0 (en) | 2010-08-20 | 2010-10-06 | Well Integrity Solutions As | Well intervention |
| US8672043B2 (en) | 2010-11-03 | 2014-03-18 | Nabors Alaska Drilling, Inc. | Enclosed coiled tubing boat and methods |
| US8887800B2 (en) | 2010-12-30 | 2014-11-18 | Xtreme Drilling And Coil Services Corp | Coil tubing rig and carrier system |
| US9016402B2 (en) * | 2011-09-08 | 2015-04-28 | Garry Thorne | Geological drill |
| CA2818286C (en) * | 2012-06-08 | 2021-05-25 | Option Industries Inc. | Mobile coiled tubing unit |
| US8915310B2 (en) | 2012-06-21 | 2014-12-23 | Superior Energy Services—North America Services, Inc. | Long lateral completion system and method |
| CN103247220B (en) * | 2013-05-27 | 2015-07-01 | 烟台杰瑞石油装备技术有限公司 | Coiled tubing operation equipment simulator |
| US9587450B2 (en) * | 2014-08-08 | 2017-03-07 | Premier Coil Solutions, Inc. | Injector head tilt mechanism |
| US9624741B2 (en) * | 2014-08-26 | 2017-04-18 | Raptor Rig Ltd. | Apparatus and methods for downhole tool deployment for well drilling and other well operations |
| US9850713B2 (en) | 2015-09-28 | 2017-12-26 | Must Holding Llc | Systems using continuous pipe for deviated wellbore operations |
| AU2017393950B2 (en) | 2017-01-18 | 2022-11-24 | Minex Crc Ltd | Mobile coiled tubing drilling apparatus |
| CN109854184A (en) * | 2019-02-23 | 2019-06-07 | 中国石油大学(华东) | Seabed drilling machine twin-well frame and casing processing system and method |
| CN113047786B (en) * | 2019-12-26 | 2023-02-28 | 中国石油天然气集团有限公司 | Continuous pulling-up and pulling-down device for rigid sucker rod |
| CN112761549B (en) * | 2020-12-29 | 2022-09-30 | 大庆石油管理局有限公司 | Monitoring method and device for top drive gearbox, electronic equipment and storage medium |
| CN113719240A (en) * | 2021-09-01 | 2021-11-30 | 中石化四机石油机械有限公司 | Telescopic derrick for coiled tubing operation and use method thereof |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3734210A (en) * | 1970-06-15 | 1973-05-22 | Kenting Drilling Ltd | Carrier mounted drilling unit |
| US3734209A (en) * | 1971-08-20 | 1973-05-22 | Bucyrus Erie Co | Well drilling rod and casing assembling method |
| US4515220A (en) * | 1983-12-12 | 1985-05-07 | Otis Engineering Corporation | Apparatus and method for rotating coil tubing in a well |
| US4655291A (en) * | 1985-09-23 | 1987-04-07 | Otis Engineering Corporation | Injector for coupled pipe |
| US5215151A (en) * | 1991-09-26 | 1993-06-01 | Cudd Pressure Control, Inc. | Method and apparatus for drilling bore holes under pressure |
| US5244046A (en) * | 1992-08-28 | 1993-09-14 | Otis Engineering Corporation | Coiled tubing drilling and service unit and method for oil and gas wells |
| US5738173A (en) * | 1995-03-10 | 1998-04-14 | Baker Hughes Incorporated | Universal pipe and tubing injection apparatus and method |
| US5765643A (en) * | 1996-05-06 | 1998-06-16 | Vita International, Inc. | Method and apparatus for injection of tubing into wells |
| US6003598A (en) * | 1998-01-02 | 1999-12-21 | Cancoil Technology Corporation | Mobile multi-function rig |
| US6158516A (en) * | 1998-12-02 | 2000-12-12 | Cudd Pressure Control, Inc. | Combined drilling apparatus and method |
| US6386290B1 (en) * | 1999-01-19 | 2002-05-14 | Colin Stuart Headworth | System for accessing oil wells with compliant guide and coiled tubing |
| CA2567855C (en) * | 1999-12-06 | 2009-09-08 | Precision Drilling Corporation | Coiled tubing drilling rig |
| CA2322917C (en) * | 2000-10-06 | 2007-01-09 | Cancoil Integrated Services Inc. | Trolley and traveling block system |
| US6431286B1 (en) * | 2000-10-11 | 2002-08-13 | Cancoil Integrated Services Inc. | Pivoting injector arrangement |
| US7077209B2 (en) * | 2001-10-30 | 2006-07-18 | Varco/Ip, Inc. | Mast for handling a coiled tubing injector |
| CA2364147A1 (en) * | 2001-11-28 | 2003-05-28 | Cancoil Integrated Services Inc. | Improved mast and trolley arrangement for mobile multi-function rig |
| US6973979B2 (en) * | 2003-04-15 | 2005-12-13 | Savanna Energy Services Corp. | Drilling rig apparatus and downhole tool assembly system and method |
| CA2425448C (en) * | 2003-04-15 | 2005-02-01 | Savanna Energy Services Corp. | Drilling rig apparatus and downhole tool assembly system and method |
| US7111689B2 (en) * | 2004-05-07 | 2006-09-26 | Bj Services Co | Coiled tubing injector deployment assembly and method |
| CA2501463A1 (en) * | 2005-03-17 | 2006-09-17 | Frac Source Inc. | Support apparatus for a lubricator in a coiled tubing operation |
| CA2541481A1 (en) * | 2005-03-31 | 2006-09-30 | Trican Well Service Ltd. | Method and apparatus for installing strings of coiled tubing |
| US8627896B2 (en) * | 2005-06-17 | 2014-01-14 | Xtreme Drilling And Coil Services Corp. | System, method and apparatus for conducting earth borehole operations |
| US7185708B2 (en) * | 2005-06-24 | 2007-03-06 | Xtreme Coil Drilling Corp. | Coiled tubing/top drive rig and method |
| US7182140B2 (en) * | 2005-06-24 | 2007-02-27 | Xtreme Coil Drilling Corp. | Coiled tubing/top drive rig and method |
| US8408288B2 (en) * | 2006-03-07 | 2013-04-02 | Xtreme Drilling And Coil Services Corp. | System for conducting jointed pipe and coiled tubing operations |
-
2005
- 2005-12-05 US US11/294,036 patent/US7185708B2/en active Active
-
2006
- 2006-01-25 CA CA002533969A patent/CA2533969C/en active Active
- 2006-06-22 MX MX2008000334A patent/MX2008000334A/en active IP Right Grant
- 2006-06-22 WO PCT/US2006/024627 patent/WO2007002491A2/en active Application Filing
- 2006-06-22 US US11/653,674 patent/US7478677B2/en active Active
- 2006-06-22 EP EP06773912A patent/EP1893842A4/en not_active Withdrawn
- 2006-06-22 AU AU2006261964A patent/AU2006261964B2/en active Active
-
2008
- 2008-01-04 NO NO20080054A patent/NO20080054L/en not_active Application Discontinuation
- 2008-12-17 US US12/337,089 patent/US20090095491A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US7478677B2 (en) | 2009-01-20 |
| EP1893842A2 (en) | 2008-03-05 |
| AU2006261964B2 (en) | 2011-02-24 |
| NO20080054L (en) | 2008-03-19 |
| US20060289171A1 (en) | 2006-12-28 |
| EP1893842A4 (en) | 2011-04-13 |
| CA2533969A1 (en) | 2006-12-24 |
| MX2008000334A (en) | 2008-04-02 |
| US20090095491A1 (en) | 2009-04-16 |
| AU2006261964A1 (en) | 2007-01-04 |
| WO2007002491A3 (en) | 2007-04-12 |
| US7185708B2 (en) | 2007-03-06 |
| US20070114041A1 (en) | 2007-05-24 |
| WO2007002491A2 (en) | 2007-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2533969C (en) | Coiled tubing/top drive rig and method | |
| US7182140B2 (en) | Coiled tubing/top drive rig and method | |
| US8327927B2 (en) | Apparatus and method for performing earth borehole operations | |
| CA2533725C (en) | Apparatus and method for performing earth borehole operations | |
| US6973979B2 (en) | Drilling rig apparatus and downhole tool assembly system and method | |
| US7681632B2 (en) | Integrated top drive and coiled tubing injector | |
| US7527100B2 (en) | Method and apparatus for cutting and removal of pipe from wells | |
| US20070125552A1 (en) | Mobile drilling rig with dual carriers | |
| US6877942B2 (en) | Ramp trailer for oil field tubulars | |
| US20090183918A1 (en) | Methods and systems for drilling auxiliary holes | |
| CA2425448C (en) | Drilling rig apparatus and downhole tool assembly system and method | |
| US20060231269A1 (en) | Apparatus and method for performing earth borehole operations | |
| EA010676B1 (en) | Coiled tubing top drive rig and method for inserting coiled tubing into a well | |
| US11506001B2 (en) | System and method of obtaining formation samples using coiled tubing | |
| CA3180303C (en) | Portable downforce system and method | |
| US20240133253A1 (en) | Portable Downforce System and Method | |
| AU2007226221B2 (en) | Mobile drilling rig with dual carriers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |