WO1997040255A2 - Tubing injection systems for land and under water use - Google Patents
Tubing injection systems for land and under water use Download PDFInfo
- Publication number
- WO1997040255A2 WO1997040255A2 PCT/US1997/007705 US9707705W WO9740255A2 WO 1997040255 A2 WO1997040255 A2 WO 1997040255A2 US 9707705 W US9707705 W US 9707705W WO 9740255 A2 WO9740255 A2 WO 9740255A2
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- WO
- WIPO (PCT)
- Prior art keywords
- injector
- tubing
- tubular member
- underwater
- specified
- Prior art date
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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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
-
- 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
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/09—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods specially adapted for drilling underwater formations from a floating support using heave compensators supporting the drill string
-
- 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
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/068—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
- E21B33/076—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells specially adapted for underwater installations
Definitions
- TITLE TUBING INJECTION SYSTEMS FOR LAND AND UNDER-WATER USE
- This invention relates generally to tubing injection systems for use in drilling and/or servicing wellbores and more particularly to a novel land tubing
- Drilling rigs and workover rigs are utilized to run drill pipes, production pipes or casings into wellbores during the drilling or servicing operations. Such rigs are expensive and the drilling and service operations are time-consuming. To reduce or minimize the time and expense involved in using jointed pipes or
- a small diameter coiled-tubing limits the amount of fluid that can be injected downhole, amount of compression force that can be transmitted through the coiled-tubing to the bottomhole assembly, amount of tension that can be placed
- coiled-tubings of varying sizes are now commonly used to perform many functions previously performed by drill pipes or jointed-tubulars. Due to the low cost of operating coiled- tubings, the flexibility of its use and the continued increase in the drilling of
- the injector head is typically placed on the wellhead
- injector head is removed from the wellhead equipment to insert the bottomhole assembly into the wellhead equipment. Additionally, systems having vertically- movable injector head and gooseneck, which allow the operator to connect and
- the tubing is typically unwound from a reel and passed over a gooseneck, which is a rigid structure of a relatively short radius.
- goosenecks impart great stress onto the tubing when the tubing is passed
- injector heads are not permanently installed on subsea wellhead because prior art injectors require attaching the bottom hole assemblies, such as drilling assemblies, which typically have substantially greater outside
- prior art systems do not provide methods for transporting a bottomhole assembly attached to a tubing end between the wellhead and the vessel. Prior art systems also do not provide under water
- tubing injection systems that are automatically operated from the surface. Due to the corrosive nature of sea water, electrical sensors are typically not used in connection with under-water injection heads. Also, prior art under water injector systems are not efficient, do not allow for the automatic control of the
- injectors typically require attaching the bottom hole assembly below the underwater injector prior to the placement of the injector on the wellhead.
- the injector is encased in an enclosure. Water in the enclosure is displaced by a gas. Gas injection means are provided for continuously injecting the gas into the enclosure to replace any gas that
- Such a system requires gas injection equipment and other control equipment for ensuring continued supply of gas into the enclosure during the entire length of the operation being performed, which can be expensive and requires installing unnecessary equipment under water.
- the tubing injection systems automatically control the operation
- the subsea system further includes
- the present invention provides a rig which includes
- injection system contains at least two opposing injection blocks which are
- Each such injection block contains a plurality
- Each gripping member is designed to accommodate
- a plurality of rams are
- the rams are preferably hydraulically operated.
- the system is positioned above the injector head for directing a tubing into the injector head opening in a substantially vertical direction.
- the rig system contains a variety of sensors for determining values of various operating parameters.
- the system contains sensors for determining the radial force on
- the tubing exerted by the injector head the tubing exerted by the injector head, tubing speed, injector head speed, weight on bit during the drilling operations, bulk weight of the drill string, compression of the tubing guidance member during operations and the back
- the control unit With respect to the operation of the injector head, during normal operation when the tubing is inserted into the wellbore, the control unit continually maintains the tubing speed, tension on chains in the injector head
- control unit maintains the back tension on the reel and the position of the tubing guidance system within their respective predetermined limits.
- the control unit also controls the operation of the
- the control unit operates the reel and the injector head to remove the tubing from the wellbore.
- the system of the invention automatically performs the tubing injection or removal operations for the
- the rig system of the present invention requires substantially less manpower to operate in contrast to comparable conventional rigs.
- the bottomhole assembly is safely connected from the tubing at a working platform prior to inserting the bottomhole assembly into the injector head and is then disconnected after the bottomhole assembly has been safely removed from the wellbore to the working platform above the injector head. This system does
- the injector head is fixed above the wellhead equipment, which is safer compared to the system which require moving the injector head. Substantially all of the operation is performed from the control unit which is conveniently located at a safe distance from the rig frame, thus providing a relatively safer working environment.
- the present invention also provides a tubing injection system for moving a tubing through subsea wellbores.
- the system includes an electrically-
- the under water injector operates in the same manner as described above with reference to the land
- a surface injector on the vessel moves the bottomhole assembly attached to the tubing end from the vessel to the subsea injector.
- the secondary surface injector may be made inoperable.
- a relatively small third injector may be utilized to move the tubing from a reel to the secondary surface injector and to provide desired tubing tension between the
- a tubing guidance system at the vessel platform may also be utilized to guide the tubing from the reel through the secondary injector in substantially vertical direction.
- the under water injector is preferably electrically controlled
- Hydraulic power source is placed on the vessel, while electrically-controlled fluid valves associated with the underwater injector are preferably placed under water near the underwater injector.
- electrically-controlled fluid valves associated with the underwater injector are preferably placed under water near the underwater injector.
- the unit at the surface controls the operation of the tubing injection system, including the tubing gripping force, tubing speed, injector speed, compression of the tubing guidance member and the back tension on the tubing reel.
- control unit continually maintains the tubing speed, tension on the injector chains and radial pressure on the tubing within predetermined limits provided to the control unit. Additionally, the control unit maintains the back tension on the reel. The control unit also may control the
- control unit operates the reel and the injector in the reverse
- the present invention provides a method for moving a tubing through a subsea wellbore.
- the method comprises the steps: (a) placing a subsea injector adjacent the seabed; (b) placing a surface injector at the surface; (c) providing a riser between the subsea and the surface injectors for guiding the tubing to the first injector; (d) moving the tubing from a source to the subsea injector through the riser by the surface injector; and (e) moving the tubing through the
- FIG. 1 shows a schematic elevational view of a land drilling rig utilizing
- FIG. 2 shows a schematic elevational view of a tubing handling system for use in moving tubing through a subsea wellbore according to a preferred embodiment of the present invention.
- FIG. 3 shows a schematic elevational view of an injector according to the
- FIG. 4A shows a side view of a block having a resilient member for use in the injector head of FIG. 3.
- FIG. 4B shows a side view of a gripping member for use in the block of FIG. 4A.
- FIG. 5 shows a block functional diagram of a control system for controlling the operation of the tubing injection systems shown in FIGS. 1 and 2.
- FIG. 1 shows a schematic elevational view of a land rig 10 utilizing a tubing handling system according to the present invention.
- the rig 10 includes
- a suitable wellhead equipment 17 containing a wellhead stack 16 and a blowout preventor stack 18 are placed as desired over the well casing (not shown) in the wellbore.
- a first platform or injector platform 20 is provided at a suitable
- An injector generally denoted herein by numeral 200 and described in more detail later in reference to FIG. 3, is
- the control panel 122 contains a number of electrically-operated control valves 124 for controlling the various hydraulically-operated elements of the injector 200.
- the control valves 124 control the flow of a pressurized fluid from a common
- An electrical control system or control unit 170 preferably placed at a remote location, controls the operation of the injector 200 and other elements of the rig 10 according to programmed
- the rig 10 further contains a working platform 30 that is attached to the frame 12 above the injector 200.
- Tubing 142 to be
- the reel 80 is preferably hydraulically operated and is controlled by the control unit 170.
- the control unit 170 controls a fluid control valve 62 placed in a fluid line 64 coupled between the reel 80 and the hydraulic
- a speed sensor 65 preferably a wheel-type sensor known in
- the tubing 142 from the reel 80 passes over a tubing guidance system
- tubing guidance system 40 is attached to the frame 12 above the working platform 30 at a height "h" which is sufficient to enable an operator to connect
- the tubing guidance system 40 preferably
- a front end 44a of the guide arch 44 is preferably positioned directly above the reel 80 on which the tubing 142 is wound and the tail end 44b is
- the flexible connection system 50 contains a piston 52 that is connected between the guide arch 44 and the member 48.
- Members 54a and 54b are fixedly connected to the piston 52 and
- the piston 52 enables the guide system 40 to move vertically.
- the large radius and the piston 52 make the guide system 40 resilient, thereby avoiding
- a position sensor 56 is coupled to the piston 52 to determine the position of the guide arch 44 relative to its original or non-operating position.
- the control unit 170 continually determines the position of the guide arch 44 from the sensor 56. The control
- unit 170 is programmed to activate an alarm and/or shut down the operation if the guide arch 44 has moved downward beyond a predetermined position.
- the position of the guide arch 44 correlates to the stress on the guide arch 44.
- All of the hydraulically operable elements of the wellhead equipment 17 are coupled to the hydraulic power unit 60, including the blowout preventor stack 18.
- control valve such as valve 19 or 124
- an associated line such as
- control valve is operatively coupled to the control unit 170, which controls the operation of the control valve 19 or 124 according to programmed instructions.
- control unit 170 may be coupled to a variety of other sensors (not shown), such as pressure and temperature sensors for determining the pressure and temperature downhole and at the wellhead
- the control unit 170 is programmed to operate such elements in a manner that will close the wellhead equipment 17 when an unsafe condition is detected by the control unit 170.
- FIG. 2 shows a schematic elevational view of a tubing injection system
- a template that moves tubing 142 from a reel 180 at a floating rig 101 (such as a ship or a semi-submersible rig, herein referred to as the "vessel") to a permanently installed injector 200 at a subsea wellhead 119 and through a subsea wellbore (not shown) according to the present invention.
- a floating rig 101 such as a ship or a semi-submersible rig, herein referred to as the "vessel”
- injector 200 at a subsea wellhead 119 and through a subsea wellbore (not shown) according to the present invention.
- FIG. 2 shows typical wellhead equipment used during the drilling
- the wellhead equipment includes a control valve 124 that allows the drilling fluid to circulate to the surface via a fluid line 128 and a blow-out-preventor stack 126 having a plurality of control valves 126a.
- a lubricator 130 with its associated flow control valves 130a is shown placed
- the flow control valves 130a associated with the lubricator 130 are utilized to control the discharge of any fluid from the lubricator 130 to the surface via a fluid flow line 132.
- a first frame 138 is supported above the stuffing box 136 and a second
- the frame 140 having a substantially flat platform 144, is supported over the first frame 138.
- the two frames 138 and 140 have suitable openings above the
- Tension lines 123 connect the frames 127 and 138, while tension lines 141 are used to position the second platform 140 over the first platform 138.
- the tension lines 141 are moored to
- An injector such as the injector 200 described earlier, is permanently
- a stripper 178 may be placed over the injector
- a control unit 170 such as described earlier with respect to FIG. 1 , placed on the vessel 101 , controls the operation of the tubing injection system 100, including the operation of the injector 200, the wellhead and various other elements
- control unit 170 is associated with the tubing injection system 100.
- the control unit 170 is associated with the tubing injection system 100.
- the computer computes the values of the various operating parameters from input or data received from the various sensors in the tubing injector system 100 and carries out data manipulation in response to programmed instructions provided to the control unit 170.
- a hydraulic power unit 160 placed on the vessel platform 102 provides
- a valve control unit or panel 122 having a plurality of electrically-operated fluid control valves 124 is preferable placed on or near the injector 200.
- the valve control panel 122 may, however, be placed
- Individual control valves 124 control the flow of the pressurized fluid from the hydraulic power unit 160 to the various devices in the injector 200, thereby controlling the operation of such associated devices. Electrical power conductors to the
- control panel 122 is provided via a conduit 113. The operation of the system
- Tubing 142 is coiled on the reel 180 placed on the vessel platform 102.
- the reel 180 is preferably hydraulically-operated and controlled by the control unit 170. To control the operation of the reel 180, the control unit 170
- a sensor 182 preferably a wheel-type sensor, is operatively coupled to the tubing near the reel 180. The output of the sensor 182 passes to the control unit 170, which determines the speed of the tubing 142 in either direction.
- a sensor 184 coupled to the reel
- a tension sensor 186 is coupled to the tubing 142 for determining the back tension on the tubing 142.
- a relatively small injector 195 is positioned above the reel 180 for moving the tubing 142 from the reel 180 to a secondary surface injector 190 and for providing desired
- the injector 195 is preferably mounted on a support member 196 attached above the reel 180.
- the injector 195 provides and controls the line tension between the reel 180
- the injector 190 is preferably placed at a height "h-,” above the vessel
- the injector 190 If a movable injector is utilized as the injector 190, the height
- any suitable injector may be used such as injector 190 or injector 195.
- the tubing guide 144 may be utilized to guide the tubing 142 from the reel 180 to the secondary surface injector 190. Any gooseneck may be utilized for the purpose of this invention.
- the tubing guide 144 preferably has a 180° guide arch which enables the tubing to move from the reel 180 substantially
- the front end 144a of the gooseneck 144 is preferably positioned directly above the reel 180 and the tail end 144b is positioned above an opening 191 of the surface secondary injector 190 in a manner that will ensure that the tubing 142 will enter the secondary surface injector opening 191 vertically.
- a riser 80 which may be a rigid-type riser or flexible-type riser, placed between the platform 102 and the injector 200, guides the bottomhole assembly 145 and the tubing 142 into a through opening 201 in the injector
- the primary purpose of the injector 195 is to provide desired tension to the tubing 142 while the primary purpose of the surface injector 190 is to move the tubing 142 between the reel 180 on the vessel 101 and the injector
- the surface injector 190 may be fully opened so that the tubing 142 freely passes therethrough.
- the secondary surface injector 190 need only be made strong
- the surface injector 190 may be utilized to maintain a desired line pull (tension) between the reel 180 and the injectors 190 and 200.
- the secondary surface injector 190 may also be utilized to augment the subsea injector 200 in case of emergency, such as in the event the tubing 142 starts
- each of the injectors 190, 195 and 200, control valves of the blowout preventor 26 and those of the lubricator 30, receive pressurized fluid from the hydraulic power unit 160 via their associated fluid lines.
- an electrically-operated control valve such as
- valve 124 is placed in its associated line (not shown), which is connected between the element and the hydraulic power unit 160.
- Each such control valve is operatively coupled to the control unit 170, which controls its operation according to programmed instructions.
- the control unit 170 controls its operation according to programmed instructions.
- control unit 170 is coupled to a variety of other sensors, such as pressure and temperature sensors for determining the pressure and temperature at the wellhead.
- the control unit 170 is programmed to operate such elements in a manner that will
- a typical procedure to move the bottomhole assembly 145 attached to the end of the tubing 142 from the vessel 101 into the wellbore is as follows.
- the subsea injector 200 is permanently (for the duration of the task to be
- the bottomhole assembly 145 is attached to the end of the tubing 142.
- the pressure between the stuffing box 136 and the lubricator 130 is equalized. This may be done by closing the lower valve 130a of the lubricator 130.
- the stuffing box 136 is opened and the subsea injector 200 is opened to its fully open position.
- the reel 180, injectors 190 and 195 (if installed) are then
- the tubing 142 is moved by the injector 190 while the small injector 195 provides a desired line pull between the injector head 195 and the reel 180.
- the riser 80 guides the bottomhole assembly 145 from the vessel 101 through the opening 201 of the
- the injector 200 and into the stuffing box 136. After the bottomhole assembly 145 has passed into the stuffing box 136, the injector 200 is operated so that the gripping members of the chain
- the stuffing box 136 is closed around the tubing 142.
- the lubricator 130 is pressure tested using sea water provided by a control line 132 from the surface or via the tubing 142 and the bottomhole assembly 145. The pressure between the
- lubricator 130 and the wellbore is then equalized by using any known method in the art.
- the wellhead valves 126a are then opened to allow the bottomhole assembly to pass therethrough and into the wellbore.
- the subsea injector 200 is operated at a desired speed to move the bottomhole assembly 145 into the
- the wellbore fluid is circulated through the tubing 142, the bottomhole assembly 145, and a return line 128 at the wellhead to the surface.
- the wellbore fluid is not circulated through the lubricator 130.
- the lubricator 130 is filled with the sea water to prevent collapse of the
- the subsea injector 200 is installed only once for the entire length of the operation.
- the bottomhole assembly s moved into and out of the wellbore without removing the injector 200. The above procedure allows for attaching the
- the bottomhole assembly 145 is attached to the tubing below the injector to be deployed under water prior to the deployment. Also, the injector is deployed
- FIG. 3 shows a schematic elevational view of an embodiment of the injector 200 according to the present invention.
- the injector 200 contains two vertically placed opposing blocks 210a and 210b
- the lower end of the block 210a is placed on a horizontal support member 212 supported by upper rollers 214a and a lower roller 216a. Similarly, the lower
- the blocks 210a and 210b are pivotly connected to each other at a pivot point 219 by pivot members 218 in a manner that enables the blocks to move horizontally, thereby creating a desired opening of width "d" between such blocks.
- a plurality of hydraulically- operated members (RAM) 230a-c are attached to the blocks 210a-b for adjusting the width "d" of the opening 272 to a desired amount.
- the RAMS hydraulically- operated members
- 230a-c are operatively coupled via a control valve 124 placed in the control
- the control unit 170 controls the RAM action.
- the RAMS 230a-c are all operated in unison so as to exert substantially uniform force on the blocks 210a and 210b.
- Injector block 210a preferably contains an upper wheel 240a and a lower wheel 240a', which are rotated by a chain 211a connected to teeth 213a and 213b of the wheels 240a and 240b respectively.
- the upper wheel 240a contains a plurality of tubing holding blocks 242a attached around the circumference of the upper wheel 240a.
- injector block 210b contains an upper wheel 240b and a lower wheel 240b', which are rotated by a chain
- the upper wheel 240b contains a plurality of tubing holding blocks 242b attached around the circumference of the upper wheel 240b.
- the wheels 240a and 240b are rotated in unison by a suitable variable speed motor (not shown) whose operation is controlled by the control unit 170.
- Each block 242a and 242b is adapted to receive a Y-block therein, which is designed for holding or gripping a specific tubing size or a
- a separate vertically operating RAM 260 is connected to each of the lower wheels for maintaining a desired tension on their associated chains.
- the RAMS 260 are preferably hydraulically- operated and electrically-controlled by the control unit 170.
- any other electro-hydraulic interface and bearings of the injector 200 are selectively sealed, leaving the chain and the blocks 242 exposed to the water. Sealing selected items of the subsea injector 200 prevents such elements from rusting and avoids either completely sealing the subsea injector 200 or using gas to expel water from around the subsea injector 200 as taught by prior art
- FIG.4A shows a side view of an injection tubing holding block 242, such
- FIG. 4B shows a side view of a holding member 295 for use in the block 242.
- the block 242 is "Y-shaped" having outer surfaces 290a and 290b which respectively have therein receptacles 292a and 292b for receiving therein the tubing holding member 295.
- the surface of the Y-block 242 contains a resilient member, such as member 293b shown placed in the surface 292b.
- the outer surface of the holding member 295 may contain a rough surface or teeth for providing friction thereto for holding the tubing 142 (FIG. 2).
- a separate holding member 295 is placed in
- each of the outer surfaces of the Y-block 242 over the resilient member.
- the Y-blocks 242 are fixedly attached to the upper wheels 240a-b around their respective circumferences as previously described. During operations, the Y- blocks are urged against the tubing 142, which causes the holding members
- the Y-blocks 242 grip the tubing 142 and move it in the direction of rotation of the wheels 240a-b. If the tubing has irregular
- the resilient members provide sufficient
- the injector 200 preferably includes a number of
- the injector is coupled to the control unit 170 (FIG. 2) for providing information about selected injector head operating parameter.
- the injector is coupled to the control unit 170 (FIG. 2) for providing information about selected injector head operating parameter.
- head 200 preferably contains a speed sensor 270 for determining the rotational speed of the injector 200, which correlates to the speed at which the injector
- the control system 170 determines the actual tubing speed from the sensor 162 (FIGS. 1 and 2), which may be placed at any suitable place such as near the injector head as shown in FIG. 3.
- a sensor 273 is provided to determine the size "d" of the
- control unit 170 is coupled to the
- control unit 170 receives information into the control unit 170 about various elements of the system, such as the size of the tubing and limits of certain parameters, such as the maximum tubing speed, the maximum difference allowed between the actual tubing speed obtained from the sensor 162 and the tubing speed
- the control unit 170 also continually determines the tension on the chains 211a and 211b, and the radial pressure on the tubing 142. Still referring to FIG. 1 , to operate the rig 10, an operator inputs to the
- control unit 170 the maximum outside dimension of the bottomhole assembly 145, the size of the tubing 142 to be utilized, the limits or ranges for the radial
- An end of the tubing 142 is passed over the guide arch 44 and held in place above the working platform 30.
- the RAMS 230a-c are then operated to provide an opening 202 in the injector head 200 that is sufficient to pass the bottomhole assembly therethrough. After inserting the bottomhole assembly
- control unit 170 can automatically operate the injector 200 based on the programmed instruction for the parameters as input by the operator.
- the system 10 may be operated wherein
- control unit 170 inserts the tubing 142 at a predetermined speed and
- control unit 170 causes the RAMS 230a-c to exert additional pressure on the tubing to provide greater gripping
- control unit 170 may be programmed to activate an alarm (not shown) and/or to shut down the
- control unit 170 continually maintains the tubing speed, tension on the chains 211a-b and radial pressure on the tubing 142 within predetermined limits
- control unit 170 provides the control unit 170. Additionally, the control unit 170 maintains the back tension on the reel 180 and the position of the tubing guidance system 40 within their respective predetermined limits. The control unit 170 also controls the operation of the wellhead equipment 17. During removal of the tubing from the wellbore, the control unit 170 operates the reel 180 and the injector 200 to remove the tubing 142 from the wellbore.
- the system 10 of the invention automatically performs the tubing injection and removal operations for the specified tubing used according
- the rig system 10 of the present invention requires substantially less
- the bottomhole assembly is safely connected to the tubing 145 at a working platform 30 prior to inserting the bottomhole assembly into the injector head
- the injector 200 is fixed
- control unit 170 which is conveniently located at a safe distance from the rig frame 12, thus providing a relatively safer working
- the operations are automated, thereby requiring substantially fewer persons to operate the rig system.
- the tubing injection system 100 contains
- the subsea injector 200 preferably contains a speed sensor 270 for determining the rotational speed of the injector, which correlates to the speed at which the injector 200 should be moving the tubing 142.
- the control unit 170 determines information about selected parameters of the tubing injection system 100.
- the subsea injector 200 preferably contains a speed sensor 270 for determining the rotational speed of the injector, which correlates to the speed at which the injector 200 should be moving the tubing 142.
- unit 170 determines the actual tubing speed from the sensor 162 placed at the surface injector 190 or a sensor 162' placed at the subsea injector 200.
- sensor 273 is provided to determine the size "d" of the opening between the injector Y-blocks 242a-b. Additional sensors are provided to determine the tension on the chains 211a and 211b and the radial pressure or force applied to the tubing 142 by the Y-blocks 242a-b.
- control unit 170 is coupled to the various sensors and control valves in the system 100 for determining the values of the various operating parameters of the system 100 including parameters relating to the injectors 190, 195 and 200, the tension on the tubing 142 and the
- Any connections between the control unit 170 and the subsea sensors may be made by electrical wires run inside a sea worthy cable or conduit 113.
- control unit 170 operates the RAMS 230a-230c to provide an opening that is large enough to pass the bottomhole assembly 145 through the opening. After the bottomhole assembly 145 has passed through
- the control unit 170 may be set to automatically operate the injector 200 based on the programmed instruction. In one mode, the system 100 may be operated wherein the control unit 170 inserts the tubing 142 at a
- control unit 170 causes the RAMS to
- control unit 170 is programmed to
- control unit 170 continually determines the tension on the chains 211a and 211b (FIG. 2), the radial pressure on the tubing., and the speed of the tubing 142, and operates the injector 200 so as to maintains the tubing speed, tension
- control unit 170 also controls the operation of the wellhead equipment 118. During removal of the tubing 142 from the wellbore, the control unit 170 operates the reel 180 and the injectors 190, 195 and 200 to remove the bottomhole assembly 145 and the tubing 142 from the wellbore.
- FIG. 5 shows a generic block functional diagram of the interconnection
- the electrically-operated fluid control valves are coupled to the various surface and/or subsea hydraulically-operated devices.
- the surface hydraulically-operated devices may include the surface injectors 340 and 348, reel 342 and any other
- the subsea hydraulically-operated devices may include the subsea injector 352, pumps and other devices associated with the lubricator 354, the blow-out-preventor 356, and other subsea devices, generally denoted herein by box 358.
- the various sensors in the system whether placed under water or at the surface, provide
- the surface sensors may include sensors for determining the tubing speed 334, reel tension
- sensors placed in the tubing guidance system 336 and any other desired sensors are generally denoted herein as S ⁇ S, and may include
- the control unit 310 computes the values of the various operating parameters
- control unit 310 controls the operation of the various devices in response to the computed parameters and instructions provided to the control unit 310.
- control unit 310 may be programmed to periodically or continually update
- the control unit 310 can operate the systems 10 and 100 to provide optimal handling of the tubing 142.
- the system 10 and 100 of the present invention may be programmed to
- tubing injection and removal operations for the specific tubing used for a given operation.
- substantially all of the operation is performed from the control unit 170, which is conveniently located at a safe distance from the other tubing injection equipment, thus providing a relatively safer working environment.
- the tubing injection and retrieval operations are automated, thereby providing greater
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU29348/97A AU730344B2 (en) | 1996-04-19 | 1997-04-21 | Tubing injection systems for land and under water use |
EP97923576A EP0894182A2 (en) | 1996-04-19 | 1997-04-21 | Tubing injection systems for land and under water use |
CA002239096A CA2239096C (en) | 1996-04-19 | 1997-04-21 | Tubing injection systems for land and under water use |
EP97909875A EP0864031B1 (en) | 1996-10-02 | 1997-09-25 | Tubing injection system for oilfield operations |
PCT/US1997/017219 WO1998014686A1 (en) | 1996-10-02 | 1997-09-25 | Tubing injection system for oilfield operations |
AU47383/97A AU727991B2 (en) | 1996-10-02 | 1997-09-25 | Tubing injection system for oilfield operations |
CA002239021A CA2239021C (en) | 1996-10-02 | 1997-09-25 | Tubing injection system for oilfield operations |
NO19982486A NO315129B1 (en) | 1996-10-02 | 1998-05-29 | Pipeline injection system for oilfield operations |
NO982485A NO982485L (en) | 1996-04-19 | 1998-05-29 | Robot injection systems for use above and below water |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/635,114 | 1996-04-19 | ||
US08/635,114 US5850874A (en) | 1995-03-10 | 1996-04-19 | Drilling system with electrically controlled tubing injection system |
US2714096P | 1996-10-02 | 1996-10-02 | |
US60/027,140 | 1996-10-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1997040255A2 true WO1997040255A2 (en) | 1997-10-30 |
WO1997040255A3 WO1997040255A3 (en) | 1997-12-11 |
Family
ID=26702117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/007705 WO1997040255A2 (en) | 1996-04-19 | 1997-04-21 | Tubing injection systems for land and under water use |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0894182A2 (en) |
AU (1) | AU730344B2 (en) |
CA (1) | CA2239096C (en) |
NO (1) | NO982485L (en) |
WO (1) | WO1997040255A2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2343466A (en) * | 1998-10-27 | 2000-05-10 | Hydra Rig Inc | Method and apparatus for heave compensated drilling with coiled tubing |
WO2000043632A3 (en) * | 1999-01-19 | 2001-01-04 | Colin Stuart Headworth | System with a compliant guide and method for inserting a coiled tubing into an oil well |
US6843321B2 (en) | 2000-02-21 | 2005-01-18 | Fmc Kongsberg Subsea As | Intervention device for a subsea well, and method and cable for use with the device |
US7565835B2 (en) | 2004-11-17 | 2009-07-28 | Schlumberger Technology Corporation | Method and apparatus for balanced pressure sampling |
USRE43410E1 (en) | 1997-05-02 | 2012-05-29 | Varco I/P, Inc. | Universal carrier for grippers in a coiled tubing injector |
CN104929537A (en) * | 2015-06-29 | 2015-09-23 | 山东胜利石油装备产业技术研究院 | Continuous snubbing operation well head device |
US9416603B2 (en) | 2010-12-08 | 2016-08-16 | Shawn Nielsen | Tubing injector with built in redundancy |
US10539141B2 (en) | 2016-12-01 | 2020-01-21 | Exxonmobil Upstream Research Company | Subsea produced non-sales fluid handling system and method |
US10995563B2 (en) | 2017-01-18 | 2021-05-04 | Minex Crc Ltd | Rotary drill head for coiled tubing drilling apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018093456A1 (en) | 2016-11-17 | 2018-05-24 | Exxonmobil Upstream Research Company | Subsea reservoir pressure maintenance system |
CN110300834B (en) * | 2017-01-18 | 2022-04-29 | 米尼克斯Crc有限公司 | Movable coiled tubing drilling device |
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US5845708A (en) * | 1995-03-10 | 1998-12-08 | Baker Hughes Incorporated | Coiled tubing apparatus |
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1997
- 1997-04-21 CA CA002239096A patent/CA2239096C/en not_active Expired - Lifetime
- 1997-04-21 AU AU29348/97A patent/AU730344B2/en not_active Ceased
- 1997-04-21 EP EP97923576A patent/EP0894182A2/en not_active Withdrawn
- 1997-04-21 WO PCT/US1997/007705 patent/WO1997040255A2/en not_active Application Discontinuation
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1998
- 1998-05-29 NO NO982485A patent/NO982485L/en not_active Application Discontinuation
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US3638288A (en) * | 1971-01-18 | 1972-02-01 | Youngstown Sheet And Tube Co | Gripper |
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US5002130A (en) * | 1990-01-29 | 1991-03-26 | Otis Engineering Corp. | System for handling reeled tubing |
GB2247260A (en) * | 1990-07-28 | 1992-02-26 | Wellserv Plc | Injector head for wells |
US5234053A (en) * | 1992-07-16 | 1993-08-10 | Halliburton Geophysical Services, Inc. | Reeled tubing counter assembly and measuring method |
WO1996000359A1 (en) * | 1994-06-23 | 1996-01-04 | Coflexip | Device for laying flexible conduits from a floating support |
WO1996028633A2 (en) * | 1995-03-10 | 1996-09-19 | Baker Hughes Incorporated | Universal pipe injection apparatus for wells and method |
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE43410E1 (en) | 1997-05-02 | 2012-05-29 | Varco I/P, Inc. | Universal carrier for grippers in a coiled tubing injector |
GB2343466A (en) * | 1998-10-27 | 2000-05-10 | Hydra Rig Inc | Method and apparatus for heave compensated drilling with coiled tubing |
GB2362409B (en) * | 1999-01-19 | 2003-09-24 | Colin Stuart Headworth | A system for accessing oil wells with spoolable compliant guide and coiled tubing |
WO2000043632A3 (en) * | 1999-01-19 | 2001-01-04 | Colin Stuart Headworth | System with a compliant guide and method for inserting a coiled tubing into an oil well |
GB2362409A (en) * | 1999-01-19 | 2001-11-21 | Colin Stuart Headworth | A system for accessing oil wells with compliant guide and coiled tubing |
US6691775B2 (en) | 1999-01-19 | 2004-02-17 | Colin Stuart Headworth | System for accessing oil wells with compliant guide and coiled tubing |
US6745840B2 (en) | 1999-01-19 | 2004-06-08 | Colin Stuart Headworth | System for accessing oil wells with compliant guide and coiled tubing |
US6834724B2 (en) | 1999-01-19 | 2004-12-28 | Colin Stuart Headworth | System for accessing oil wells with compliant guide and coiled tubing |
US6386290B1 (en) | 1999-01-19 | 2002-05-14 | Colin Stuart Headworth | System for accessing oil wells with compliant guide and coiled tubing |
AU2001236226B2 (en) * | 2000-02-21 | 2006-05-18 | Fmc Kongsberg Subsea As | Intervention device for a subsea well, and method and cable for use with the device |
US6843321B2 (en) | 2000-02-21 | 2005-01-18 | Fmc Kongsberg Subsea As | Intervention device for a subsea well, and method and cable for use with the device |
US7565835B2 (en) | 2004-11-17 | 2009-07-28 | Schlumberger Technology Corporation | Method and apparatus for balanced pressure sampling |
US7913554B2 (en) | 2004-11-17 | 2011-03-29 | Schlumberger Technology Corporation | Method and apparatus for balanced pressure sampling |
US9416603B2 (en) | 2010-12-08 | 2016-08-16 | Shawn Nielsen | Tubing injector with built in redundancy |
CN104929537A (en) * | 2015-06-29 | 2015-09-23 | 山东胜利石油装备产业技术研究院 | Continuous snubbing operation well head device |
US10539141B2 (en) | 2016-12-01 | 2020-01-21 | Exxonmobil Upstream Research Company | Subsea produced non-sales fluid handling system and method |
US10995563B2 (en) | 2017-01-18 | 2021-05-04 | Minex Crc Ltd | Rotary drill head for coiled tubing drilling apparatus |
US11136837B2 (en) | 2017-01-18 | 2021-10-05 | Minex Crc Ltd | Mobile coiled tubing drilling apparatus |
Also Published As
Publication number | Publication date |
---|---|
AU2934897A (en) | 1997-11-12 |
EP0894182A2 (en) | 1999-02-03 |
CA2239096A1 (en) | 1997-10-30 |
NO982485D0 (en) | 1998-05-29 |
NO982485L (en) | 1998-07-31 |
WO1997040255A3 (en) | 1997-12-11 |
CA2239096C (en) | 2006-10-31 |
AU730344B2 (en) | 2001-03-08 |
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