CA2439464C - Method and apparatus for reforming tubular connections - Google Patents
Method and apparatus for reforming tubular connections Download PDFInfo
- Publication number
- CA2439464C CA2439464C CA002439464A CA2439464A CA2439464C CA 2439464 C CA2439464 C CA 2439464C CA 002439464 A CA002439464 A CA 002439464A CA 2439464 A CA2439464 A CA 2439464A CA 2439464 C CA2439464 C CA 2439464C
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- CA
- Canada
- Prior art keywords
- tubular
- reforming
- tubulars
- connection
- inner diameter
- 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.)
- Expired - Fee Related
Links
- 238000002407 reforming Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims description 27
- 238000005304 joining Methods 0.000 claims description 22
- 238000007493 shaping process Methods 0.000 claims 3
- 238000005553 drilling Methods 0.000 description 16
- 238000005520 cutting process Methods 0.000 description 9
- 241000239290 Araneae Species 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002123 temporal effect Effects 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D37/00—Broaching machines or broaching devices
- B23D37/08—Broaching machines with vertically-arranged working tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
- B23D43/02—Broaching tools for cutting by rectilinear movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
- B23D79/02—Machines or devices for scraping
- B23D79/021—Machines or devices for scraping for removing welding, brazing or soldering burrs, e.g. flash, on pipes or rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/08—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for flash removal
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
-
- 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
- E21B19/16—Connecting or disconnecting pipe couplings or joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
Abstract
The present invention generally relates to methods and apparatus for connecting tubulars and reforming the connection between the tubulars. In one aspect of the invention, the tubulars are aligned, connected, and then reformed at the connection. In one embodiment, the reforming is accomplished by removing material from the tubular connection. Preferably, a broach is used to remove the material. In another embodiment, a reforming member operatively connected to a telescoping tubular is inserted into the tubulars.
Description
METHOD AND APPARATUS FOR REFORMING TUBULAR CONNECTIONS
BACKGROUND OF THE INVENTION
Field of the Invention Embodiments of the present invention generally relate to apparatus and methods for joining tubulars used in the drilling and completion of subterranean wells.
Particularly, the present invention relates to apparatus and methods for reforming a connection between tubulars.
Description of the Related Art The process of drilling subterranean wells to recover oil and gas from reservoirs consists of boring a hole in the earth down to the petroleum accumulation and installing tubulars from the reservoir to the surface. Casing is the term used for tubulars installed within the wellbore as a protective liner and a means to retrieve the oil and gas from the well. Casing is typically screwed together at the surface of the well a single tubular at a time and then lowered into the wellbore. While running casing, drilling fluid must be pumped into the wellbore to pressurize the wellbore and prevent the wellbore from collapsing. Likewise, after the casing has been assembled the casing must be cemented to the wellbore to insure a pressure-tight connection to the oil and gas reservoir.
The entire pipe liner, running from the surface of the well to the bottom, is made up of multiple casing strings ("casing strings"). Each casing string is made up of multiple casing tubulars ("tubulars"). A casing string begins by using a spider on the rig floor to suspend a first tubular in the wellbore. A second tubular is placed on top of the first tubular using a top drive adapter. The two tubulars are then connected and lowered into the wellbore until the spider holds the second tubular. The process of adding tubulars repeats until the joined tubulars form a casing string of desired length. Each tubular is filled with fluid as it is run into the wellbore to maintain pressure in the wellbore and prevent collapsing. Lowering the tubulars into the wellbore is facilitated by alternately engaging and disengaging elevator slips and spider slips with the casing string in a stepwise fashion. After each string of casing is run, that string is cemented into place. Thereafter, the wellbore is drilled deeper, and another casing string is installed.
As the casing is joined and lowered into the hole, the casing may become stuck.
When this occurs, load or weight must be added to the casing string to force the casing into the wellbore, or drilling fluid must be circulated down the inside diameter of the casing and out of the casing into the annulus in order to free the casing from the wellbore. To accomplish this, special rigging has traditionally been installed to axially load the casing string or to circulate drilling fluid. Drilling fluid is also added to the casing when lowering each section to prevent the casing from collapsing due to high pressures within the wellbore.
In order to circulate the drilling fluid, the top of the casing must be sealed so that the casing may be pressurized with drilling fluid. Since the casing is under pressure the integrity of the seal is critical to safe operation, and to minimize the loss of expensive drilling fluid. Once the casing reaches the bottom, circulating of the drilling fluid is again necessary to test the surface piping system, to condition the drilling fluid in the hole, and to flush out wall cake and cuttings from the hole. Fluid circulation continues until at least an amount of drilling fluid equal to the volume of the inside diameter of the casing has been displaced from the casing and wellbore. After the drilling fluid has been adequately circulated, the casing may be cemented in place.
The conventional way of joining casing is to screw together one or more strings of casing tubulars. It is well known in the art to use casings with internally and externally flush screw thread connections. Flush screw thread connections ease lowering of the tubulars into the wellbore and maximize the inner diameter of the tubulars, which maximizes production capacity of the well. A disadvantage of flush screw thread connections is that they form weak spots with a significantly lower strength than the _2_ rest of the pipe and a greater susceptibility to corrosion. Furthermore, connecting screw thread casing at the drilling floor consumes time and requires carefully machined tubulars. While safety requirements and explosion hazards at oil or gas wellheads limit the feasibility of some joining methods for tubulars, various methods of bonding and welding have been explored.
One method to connect tubulars together uses a friction welding technique where a ring is rotated at high speed while the tubing ends are pressed onto the ring.
Another method involves an apparatus for bonding tubulars by positioning a body of amorphous material between adjacent end surfaces of a pair of tubulars.
Thereafter, induction heating is applied to melt the amorphous material and create a metallurgical bond between the tubulars. Tubulars have also been joined by using forge/diffusion welding, induction butt-welding, or explosion.
One drawback of the bonding or welding process for joining tubulars is that the inner and outer diameters of the casing connection will become distorted. This distortion occurs due to the intense pressure or heat applied to the tubulars when joining them.
Distortion of the inner diameter of the casing is problematic because it may minimize the production capacity of the well and cause tools and smaller casing to snag when lowered through the casing. Similarly, distortion of the outer diameter may cause the casing to snag when lowered through the wellbore.
Therefore, there is a need for an apparatus and method to facilitate the joining of tubulars. There is a further need for an apparatus and method for correcting the distortions created by the joining of tubulars. There is a further need for an apparatus and method for correcting distortions created by the joining of tubulars in a time efficient manner.
SUMMARY OF THE INVENTION
The present invention generally relates to a method and apparatus for connecting tubulars and reforming the connection. In one aspect of the invention, tubulars are aligned, connected, and then reformed at the connection. Either the inner diameter or the outer diameter, or both, may be reformed using a reforming member. In one embodiment, the connection is reformed by removing material from the connection. In another embodiment, the connection is reformed by reshaping the connection.
In another aspect, the present invention provides an apparatus for joining tubulars.
The apparatus includes a tubular gripping member and a conveying member operatively connected to the tubular gripping member and at least partially insertable into an interior of tubulars. A reforming member may be operatively connected to the conveying member for reforming the connection between the tubulars. In one embodiment, the conveying member includes a telescoping tubular for extending or retracting the reforming member.
In another aspect still, the present invention provides an apparatus for joining tubulars.
The apparatus includes a tubular gripping member and a reforming member for reforming an outer portion of the tubulars.
In yet another aspect, the present invention provides a method of installing a tubular string in a wellbore. The method includes placing a first tubular having an upper end in the wellbore. The upper end is joined to a lower end of a second tubular, thereby forming a tubular junction. The tubular junction is then reformed to remove any distortions.
In yet another aspect, the present invention provides a system for installing tubulars into a well. The system includes a top drive unit, a top drive adapter, a reforming member operatively connected to the top drive adapter, and a gripping member operatively coupled to the top drive unit.
BRIEF DESCRIPTION OF THE DRAWINGS
So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.
Figure 1 is a cross-sectional view of a rig assembly for joining casing according to aspects of the present invention Figure 2 is a cross-sectional view of the rig assembly while reforming an outer diameter of the casing.
Figure 3 is a cross-sectional view of the rig assembly while reforming an inner diameter of the casing.
Figure 4 is a cross-sectional view of a rig assembly with a material-reforming member according to another aspect of the present invention.
Figure 5 is a cross-sectional view of a round broach for reforming an inner diameter of a tubular.
Figure 6 is a cross-sectional view of a round broach for reforming an outer diameter of a tubular.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 shows a cross-sectional view of equipments used to connect one or more tubulars. As shown, a lower tubular 102 is suspended in the wellbore 109 using a spider 113 disposed in the rig floor 107. The spider 113 grips the lower tubular 102 and prevents the lower tubular 102 from falling into the wellbore 109 during the connection process. It must be noted that, as used herein, the lower tubular 102 may include a single tubular or a partial casing string formed by one or more tubulars.
Figure 1 also shows a top drive unit 104 suspended from a rig above and used to exert axial and rotational forces on the rest of the rig assembly, which may be a casing or drilling assembly. A top drive adapter 105 threadedly connects to a lower portion of the top drive unit 104. The top drive adapter 105 transfers forces exerted by the top drive unit 104 onto an upper tubular 101. The top drive adapter 105 grips a side portion of the upper tubular 101 and is an example of a tubular gripping member.
However, other types of tubular gripping members are equally applicable in accordance with the aspects of the present invention. The top drive adapter 105 may include a fill-up tool 105B for dispensing and circulating fluid or cement.
The top drive adapter 105 may also include an autoseal tool 105A. The autoseal tool 105A may be used to create a pressurized seal on the top of the upper tubular 101. The pressurized seal may be necessary to keep fluid in the hole and prevent casing from collapsing.
An extension member 105C, also known as an inner tubular, extends from the bottom of the fill-up tool 105B along the inside of the tubulars 101, 102. In Figure 1, the inner tubular 105C extends past the tubular connection 103 into the lower tubular 102. This allows fluid to be pumped into the wellbore 109 without interfering with the tubular connection 103. Packers 112 attach to the inner tubular 105C and are movable therewith. The packers 112 are disposed above and below the tubular connection to isolate an area around the tubular connection 103. The isolated area is filled with gas when the upper tubular 101 and the lower tubular 102 are bonded. Filling the area with an inert gas or a catalyzing agent may prevent corrosion or accelerate the bonding process. An inner diameter broach 110 is attached to a lower portion of the inner tubular 105C. The inner diameter broach 110 may be used to reform the tubular connection 103 after the upper tubular 101 and lower tubular 102 are joined.
Figure 1 also shows a power frame 108 stationed above the rig floor 107. The power frame 108 may carry devices such as the bonding apparatus 106 to and from the wellbore 109. In addition to the bonding apparatus 106, which is used to join the upper tubular 101 and the lower tubular 102, the power frame 108 may also include an outer-diameter broach 111. The outer-diameter broach 111 may be used to reform the outer portions of the tubular connection 103 after the upper tubular 101 and lower tubular 102 are joined.
As show in Figure 1, the upper tubular 101 is aligned with the lower tubular 102 and the tubulars 101, 102 are ready to be joined. The bonding apparatus 106 bonds or welds the upper tubular 101 and the lower tubular 102 together. Alternatively, the top drive unit 104 may exert force alone or in conjunction with the bonding apparatus 106 to connect the upper tubular 101 to the lower tubular 102. The bonding process for joining the upper tubular 101 and the lower tubular 102 distorts the outer diameter 103A and the inner diameter 103B of the tubular connection. After the upper tubular 101 and the lower tubular 102 are joined (also referred to as the "tubular string 121 "), the bonding apparatus 106 and the power frame 108 are removed, but the outer-diameter broach 111 is left in place. Thereafter, the spider 113 is released and the top drive unit 104 supports the tubular string 121 in the wellbore 109.
Figure 2 is a cross-sectional view of the rig assembly lowering the tubular connection 103 past the outer diameter broach 111. The top drive adapter 105 grips the upper tubular 101 to ensure that the tubular string 121 does not fall into the wellbore 109 as they are lowered. The arrow 216 of Figure 2 indicates the lowering of the top drive unit 104 and the top drive adapter 105, which in turn lowers the tubular string 121. As discussed below, the outer-diameter broach 111 is initially below the tubular connection 103 and designed to reform any external deformities created in the tubular connection 103 by the bonding process. As the tubular string 121 is lowered, the outer diameter broach 111 passes over the tubular connection 103 and reforms the deformities in the outer diameter 103A. When the tubular string 121 reaches the desired position, the spider 113 grabs the upper tubular 101, which allows the top drive adapter 105 to release its grip on the upper tubular 101.
Figure 6 is a cross sectional view of a round outer diameter broach 601 for reforming an outer diameter 103A of the tubular string 121. Figure 1, shows the outer diameter broach 601 in the larger tubular system. In one embodiment, an outer diameter broach 601 is an inverted and flipped version of the inner diameter broach 110. The outer diameter broach 601 is designed such that portions of the tubular string pass through the inner channel 603 of the outer diameter broach 601. The inner channel 603 has successive circular cutting edges 602 that narrow, with each successive edge from top to bottom. As the tubular connection 103 moves along through the outer diameter broach 601, as depicted in Figures 1 through 3, each successive step cuts a small piece of the deformed tubular connection 103 until the connection 103 has been reformed to about the size of the lowest and smallest cutting edge. An aligning section 604 keeps the outer diameter broach 601 properly aligned with the tubular string 121.
Figure 3 is a cross-sectional view of the rig assembly with the top drive unit 104 ready for removal. The arrow 316 of Figure 3 indicates the raising of the top drive unit 104 and the top drive adapter 105, which in turn raises the inner diameter broach 110. The tubular string 121 remains stationary while the inner diameter broach 110 moves axially past the tubular connection 103 and reforms the tubular connection inner diameter 103B.
Figure 5 is an exploded view of a round inner diameter broach 110 for reforming an inner diameter 1038 of a tubular 101. Figures 1 through 4 show the position of the inner diameter broach 110 within the rig assembly. The inner diameter broach 110, as discussed below, is but one example of a material reforming member. The inner diameter broach 110 is shaped like a cone with step-like cutting edges 502.
The diameter of the cutting edges 502 increases from top to bottom. As the inner diameter broach 110 is pulled through the tubular string 121, each of the cutting edges produces a larger diameter hole in the tubular string 121.
Preferably the outer diameter of the last cutting edge is equal to the inner diameter of the tubular string 121. However, because tubular string 121 is not perfectly round, the broach 110 must be designed to accommodate irregularities in the inner diameter.
One way of dealing with the irregularities is setting the outer diameter of the last _g_ cutting edge to a known diameter that is smaller than the ideal inner diameter of the tubular string 121. The smaller known diameter, called a "drift diameter," is assured by using a "drift bar." The drift diameter is specifically defined by America Petroleum Institute specification #AP15CT for casing and #AP15D for drilling pipe. For example, before a tubular 101 is installed in the wellbore 109, a metal cylinder or " a drift bar," is forced through the tubular 101 to ensure the tubular 101 has a minimum inner diameter. If the drift bar does not fit through the tubular 101, the tubular 101 is considered irregular and will not be used. For example, a tubular with a 9-5/8 inch outer diameter might have an ideal inner diameter of 8.5 inches and a drift inner diameter of 8.4125 inches. To ensure a drift inner diameter of 8.4125 inches, a drift bar with an outer diameter of 8.4125 inches is forced through the tubular 101.
A lower portion of the broach 110 includes a control section 505 that keeps the broach 110 centered about the tubular string 121 while reforming the connection 103.
Preferably, the outer diameter of the control section 505 is about the same size as the drift inner diameter of the tubular 101. The broach 110 also contains a threaded shaft 503 for attaching to the rig assembly. The broach 110 may also contain a channel 504 for passing liquid or other objects through the broach 110. While the broach 110 is shown to have a single vertical channel 504, multiple channels may also be employed.
Additionally, the broach 110 may include horizontal channels (not shown) that allow fluid from the vertical channel 504 to flow to the cutting edges 502 to remove material already cut and cool the tubular 101 as it is cut. Furthermore, the broach 110 allows the inner diameters of the tubulars 101, 102 to be reformed with one linear motion.
This saves time because the linear motion used to reform the inner diameter is already required by the traditional method for joining tubulars 101, 102.
In addition to a broach 110, other types of material reforming members are applicable according to aspects of the present invention. For example, a drill like member may be use to remove material from the connection. A honing member may also be inserted and rotated to remove the distortion. A ridge reamer may also be used to remove the distortion. Furthermore, other methods of reshaping the distortion without _g_ removing material exist. For example, a cylindrical member, also known as a roller expander, which expands when rotated may reshape the distortion by flattening the distortion against the walls of the tubulars. Also a smooth cone shaped member may be pulled through the tubular to reshape the tubular connection.
Figure 4 is another embodiment of the present invention, incorporating a material-reforming member attached to a telescoping tubular 405C. The sequence for joining tubulars 101, 102 would be analogous to those depicted in Figures 1 through 3.
The telescoping tubular 405C is capable of extending and retracting independently of other operations. The enlarged view in Figure 4 shows an example of a telescoping tubular 405C with an inner channel 418 for passing fluid. The telescoping tubular 405C
includes a piston 415 and cylinder 414 assembly operatively connected. The cylinder 414 may be fixed to the top drive adapter 105. The piston 415 is free to slide within the cylinder 414. A hydraulic line 416 is used to pump hydraulic fluid into a chamber 419 between the cylinder 414 and the piston 415. Seals 417 prevent the hydraulic fluid from leaking into the inner channel 418. As hydraulic fluid is pumped into the chamber 419, the piston 415 is forced up and the telescoping tubular 405C
retracts.
Conversely, pumping hydraulic fluid out of the chamber 419 will extend the tubular 405C.
One advantage of the telescoping tubular 405C is increased temporal efficiency.
Normally when the top drive adapter 105 is inserted into the upper tubular 101, the top drive unit 104 is raised until the entire inner tubular 405C is higher than the upper tubular 101. However, when the telescoping tubular 405C is retracted, the top drive unit 104 does not need to be raised as high for insertion and removal of the top drive adapter 105 because the inner tubular 405C may be retracted during insertion.
Further, because the telescoping tubular may be retracted at anytime, the inner diameter broach 110 may reform the tubular connection inner diameter 103B
anytime after the tubular connection 103 has been made. For example, the inner diameter broach 110 may reform the tubular connection inner diameter 103B before inserting the tubulars into wellbore 109 or while inserting the tubulars into the wellbore 109.
Preferably, the broach 110 reforms the tubular connection 103 inner diameter while lowering the tubular string 101, 102 into the wellbore 109. The telescoping tubular 405C allows the top drive adapter 105 to retract the telescoping inner tubular 405C with increased force because it is pulling against itself as opposed to pulling against the weight of the tubular string 101, 102 and the grip of the spider 113.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
BACKGROUND OF THE INVENTION
Field of the Invention Embodiments of the present invention generally relate to apparatus and methods for joining tubulars used in the drilling and completion of subterranean wells.
Particularly, the present invention relates to apparatus and methods for reforming a connection between tubulars.
Description of the Related Art The process of drilling subterranean wells to recover oil and gas from reservoirs consists of boring a hole in the earth down to the petroleum accumulation and installing tubulars from the reservoir to the surface. Casing is the term used for tubulars installed within the wellbore as a protective liner and a means to retrieve the oil and gas from the well. Casing is typically screwed together at the surface of the well a single tubular at a time and then lowered into the wellbore. While running casing, drilling fluid must be pumped into the wellbore to pressurize the wellbore and prevent the wellbore from collapsing. Likewise, after the casing has been assembled the casing must be cemented to the wellbore to insure a pressure-tight connection to the oil and gas reservoir.
The entire pipe liner, running from the surface of the well to the bottom, is made up of multiple casing strings ("casing strings"). Each casing string is made up of multiple casing tubulars ("tubulars"). A casing string begins by using a spider on the rig floor to suspend a first tubular in the wellbore. A second tubular is placed on top of the first tubular using a top drive adapter. The two tubulars are then connected and lowered into the wellbore until the spider holds the second tubular. The process of adding tubulars repeats until the joined tubulars form a casing string of desired length. Each tubular is filled with fluid as it is run into the wellbore to maintain pressure in the wellbore and prevent collapsing. Lowering the tubulars into the wellbore is facilitated by alternately engaging and disengaging elevator slips and spider slips with the casing string in a stepwise fashion. After each string of casing is run, that string is cemented into place. Thereafter, the wellbore is drilled deeper, and another casing string is installed.
As the casing is joined and lowered into the hole, the casing may become stuck.
When this occurs, load or weight must be added to the casing string to force the casing into the wellbore, or drilling fluid must be circulated down the inside diameter of the casing and out of the casing into the annulus in order to free the casing from the wellbore. To accomplish this, special rigging has traditionally been installed to axially load the casing string or to circulate drilling fluid. Drilling fluid is also added to the casing when lowering each section to prevent the casing from collapsing due to high pressures within the wellbore.
In order to circulate the drilling fluid, the top of the casing must be sealed so that the casing may be pressurized with drilling fluid. Since the casing is under pressure the integrity of the seal is critical to safe operation, and to minimize the loss of expensive drilling fluid. Once the casing reaches the bottom, circulating of the drilling fluid is again necessary to test the surface piping system, to condition the drilling fluid in the hole, and to flush out wall cake and cuttings from the hole. Fluid circulation continues until at least an amount of drilling fluid equal to the volume of the inside diameter of the casing has been displaced from the casing and wellbore. After the drilling fluid has been adequately circulated, the casing may be cemented in place.
The conventional way of joining casing is to screw together one or more strings of casing tubulars. It is well known in the art to use casings with internally and externally flush screw thread connections. Flush screw thread connections ease lowering of the tubulars into the wellbore and maximize the inner diameter of the tubulars, which maximizes production capacity of the well. A disadvantage of flush screw thread connections is that they form weak spots with a significantly lower strength than the _2_ rest of the pipe and a greater susceptibility to corrosion. Furthermore, connecting screw thread casing at the drilling floor consumes time and requires carefully machined tubulars. While safety requirements and explosion hazards at oil or gas wellheads limit the feasibility of some joining methods for tubulars, various methods of bonding and welding have been explored.
One method to connect tubulars together uses a friction welding technique where a ring is rotated at high speed while the tubing ends are pressed onto the ring.
Another method involves an apparatus for bonding tubulars by positioning a body of amorphous material between adjacent end surfaces of a pair of tubulars.
Thereafter, induction heating is applied to melt the amorphous material and create a metallurgical bond between the tubulars. Tubulars have also been joined by using forge/diffusion welding, induction butt-welding, or explosion.
One drawback of the bonding or welding process for joining tubulars is that the inner and outer diameters of the casing connection will become distorted. This distortion occurs due to the intense pressure or heat applied to the tubulars when joining them.
Distortion of the inner diameter of the casing is problematic because it may minimize the production capacity of the well and cause tools and smaller casing to snag when lowered through the casing. Similarly, distortion of the outer diameter may cause the casing to snag when lowered through the wellbore.
Therefore, there is a need for an apparatus and method to facilitate the joining of tubulars. There is a further need for an apparatus and method for correcting the distortions created by the joining of tubulars. There is a further need for an apparatus and method for correcting distortions created by the joining of tubulars in a time efficient manner.
SUMMARY OF THE INVENTION
The present invention generally relates to a method and apparatus for connecting tubulars and reforming the connection. In one aspect of the invention, tubulars are aligned, connected, and then reformed at the connection. Either the inner diameter or the outer diameter, or both, may be reformed using a reforming member. In one embodiment, the connection is reformed by removing material from the connection. In another embodiment, the connection is reformed by reshaping the connection.
In another aspect, the present invention provides an apparatus for joining tubulars.
The apparatus includes a tubular gripping member and a conveying member operatively connected to the tubular gripping member and at least partially insertable into an interior of tubulars. A reforming member may be operatively connected to the conveying member for reforming the connection between the tubulars. In one embodiment, the conveying member includes a telescoping tubular for extending or retracting the reforming member.
In another aspect still, the present invention provides an apparatus for joining tubulars.
The apparatus includes a tubular gripping member and a reforming member for reforming an outer portion of the tubulars.
In yet another aspect, the present invention provides a method of installing a tubular string in a wellbore. The method includes placing a first tubular having an upper end in the wellbore. The upper end is joined to a lower end of a second tubular, thereby forming a tubular junction. The tubular junction is then reformed to remove any distortions.
In yet another aspect, the present invention provides a system for installing tubulars into a well. The system includes a top drive unit, a top drive adapter, a reforming member operatively connected to the top drive adapter, and a gripping member operatively coupled to the top drive unit.
BRIEF DESCRIPTION OF THE DRAWINGS
So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.
Figure 1 is a cross-sectional view of a rig assembly for joining casing according to aspects of the present invention Figure 2 is a cross-sectional view of the rig assembly while reforming an outer diameter of the casing.
Figure 3 is a cross-sectional view of the rig assembly while reforming an inner diameter of the casing.
Figure 4 is a cross-sectional view of a rig assembly with a material-reforming member according to another aspect of the present invention.
Figure 5 is a cross-sectional view of a round broach for reforming an inner diameter of a tubular.
Figure 6 is a cross-sectional view of a round broach for reforming an outer diameter of a tubular.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 shows a cross-sectional view of equipments used to connect one or more tubulars. As shown, a lower tubular 102 is suspended in the wellbore 109 using a spider 113 disposed in the rig floor 107. The spider 113 grips the lower tubular 102 and prevents the lower tubular 102 from falling into the wellbore 109 during the connection process. It must be noted that, as used herein, the lower tubular 102 may include a single tubular or a partial casing string formed by one or more tubulars.
Figure 1 also shows a top drive unit 104 suspended from a rig above and used to exert axial and rotational forces on the rest of the rig assembly, which may be a casing or drilling assembly. A top drive adapter 105 threadedly connects to a lower portion of the top drive unit 104. The top drive adapter 105 transfers forces exerted by the top drive unit 104 onto an upper tubular 101. The top drive adapter 105 grips a side portion of the upper tubular 101 and is an example of a tubular gripping member.
However, other types of tubular gripping members are equally applicable in accordance with the aspects of the present invention. The top drive adapter 105 may include a fill-up tool 105B for dispensing and circulating fluid or cement.
The top drive adapter 105 may also include an autoseal tool 105A. The autoseal tool 105A may be used to create a pressurized seal on the top of the upper tubular 101. The pressurized seal may be necessary to keep fluid in the hole and prevent casing from collapsing.
An extension member 105C, also known as an inner tubular, extends from the bottom of the fill-up tool 105B along the inside of the tubulars 101, 102. In Figure 1, the inner tubular 105C extends past the tubular connection 103 into the lower tubular 102. This allows fluid to be pumped into the wellbore 109 without interfering with the tubular connection 103. Packers 112 attach to the inner tubular 105C and are movable therewith. The packers 112 are disposed above and below the tubular connection to isolate an area around the tubular connection 103. The isolated area is filled with gas when the upper tubular 101 and the lower tubular 102 are bonded. Filling the area with an inert gas or a catalyzing agent may prevent corrosion or accelerate the bonding process. An inner diameter broach 110 is attached to a lower portion of the inner tubular 105C. The inner diameter broach 110 may be used to reform the tubular connection 103 after the upper tubular 101 and lower tubular 102 are joined.
Figure 1 also shows a power frame 108 stationed above the rig floor 107. The power frame 108 may carry devices such as the bonding apparatus 106 to and from the wellbore 109. In addition to the bonding apparatus 106, which is used to join the upper tubular 101 and the lower tubular 102, the power frame 108 may also include an outer-diameter broach 111. The outer-diameter broach 111 may be used to reform the outer portions of the tubular connection 103 after the upper tubular 101 and lower tubular 102 are joined.
As show in Figure 1, the upper tubular 101 is aligned with the lower tubular 102 and the tubulars 101, 102 are ready to be joined. The bonding apparatus 106 bonds or welds the upper tubular 101 and the lower tubular 102 together. Alternatively, the top drive unit 104 may exert force alone or in conjunction with the bonding apparatus 106 to connect the upper tubular 101 to the lower tubular 102. The bonding process for joining the upper tubular 101 and the lower tubular 102 distorts the outer diameter 103A and the inner diameter 103B of the tubular connection. After the upper tubular 101 and the lower tubular 102 are joined (also referred to as the "tubular string 121 "), the bonding apparatus 106 and the power frame 108 are removed, but the outer-diameter broach 111 is left in place. Thereafter, the spider 113 is released and the top drive unit 104 supports the tubular string 121 in the wellbore 109.
Figure 2 is a cross-sectional view of the rig assembly lowering the tubular connection 103 past the outer diameter broach 111. The top drive adapter 105 grips the upper tubular 101 to ensure that the tubular string 121 does not fall into the wellbore 109 as they are lowered. The arrow 216 of Figure 2 indicates the lowering of the top drive unit 104 and the top drive adapter 105, which in turn lowers the tubular string 121. As discussed below, the outer-diameter broach 111 is initially below the tubular connection 103 and designed to reform any external deformities created in the tubular connection 103 by the bonding process. As the tubular string 121 is lowered, the outer diameter broach 111 passes over the tubular connection 103 and reforms the deformities in the outer diameter 103A. When the tubular string 121 reaches the desired position, the spider 113 grabs the upper tubular 101, which allows the top drive adapter 105 to release its grip on the upper tubular 101.
Figure 6 is a cross sectional view of a round outer diameter broach 601 for reforming an outer diameter 103A of the tubular string 121. Figure 1, shows the outer diameter broach 601 in the larger tubular system. In one embodiment, an outer diameter broach 601 is an inverted and flipped version of the inner diameter broach 110. The outer diameter broach 601 is designed such that portions of the tubular string pass through the inner channel 603 of the outer diameter broach 601. The inner channel 603 has successive circular cutting edges 602 that narrow, with each successive edge from top to bottom. As the tubular connection 103 moves along through the outer diameter broach 601, as depicted in Figures 1 through 3, each successive step cuts a small piece of the deformed tubular connection 103 until the connection 103 has been reformed to about the size of the lowest and smallest cutting edge. An aligning section 604 keeps the outer diameter broach 601 properly aligned with the tubular string 121.
Figure 3 is a cross-sectional view of the rig assembly with the top drive unit 104 ready for removal. The arrow 316 of Figure 3 indicates the raising of the top drive unit 104 and the top drive adapter 105, which in turn raises the inner diameter broach 110. The tubular string 121 remains stationary while the inner diameter broach 110 moves axially past the tubular connection 103 and reforms the tubular connection inner diameter 103B.
Figure 5 is an exploded view of a round inner diameter broach 110 for reforming an inner diameter 1038 of a tubular 101. Figures 1 through 4 show the position of the inner diameter broach 110 within the rig assembly. The inner diameter broach 110, as discussed below, is but one example of a material reforming member. The inner diameter broach 110 is shaped like a cone with step-like cutting edges 502.
The diameter of the cutting edges 502 increases from top to bottom. As the inner diameter broach 110 is pulled through the tubular string 121, each of the cutting edges produces a larger diameter hole in the tubular string 121.
Preferably the outer diameter of the last cutting edge is equal to the inner diameter of the tubular string 121. However, because tubular string 121 is not perfectly round, the broach 110 must be designed to accommodate irregularities in the inner diameter.
One way of dealing with the irregularities is setting the outer diameter of the last _g_ cutting edge to a known diameter that is smaller than the ideal inner diameter of the tubular string 121. The smaller known diameter, called a "drift diameter," is assured by using a "drift bar." The drift diameter is specifically defined by America Petroleum Institute specification #AP15CT for casing and #AP15D for drilling pipe. For example, before a tubular 101 is installed in the wellbore 109, a metal cylinder or " a drift bar," is forced through the tubular 101 to ensure the tubular 101 has a minimum inner diameter. If the drift bar does not fit through the tubular 101, the tubular 101 is considered irregular and will not be used. For example, a tubular with a 9-5/8 inch outer diameter might have an ideal inner diameter of 8.5 inches and a drift inner diameter of 8.4125 inches. To ensure a drift inner diameter of 8.4125 inches, a drift bar with an outer diameter of 8.4125 inches is forced through the tubular 101.
A lower portion of the broach 110 includes a control section 505 that keeps the broach 110 centered about the tubular string 121 while reforming the connection 103.
Preferably, the outer diameter of the control section 505 is about the same size as the drift inner diameter of the tubular 101. The broach 110 also contains a threaded shaft 503 for attaching to the rig assembly. The broach 110 may also contain a channel 504 for passing liquid or other objects through the broach 110. While the broach 110 is shown to have a single vertical channel 504, multiple channels may also be employed.
Additionally, the broach 110 may include horizontal channels (not shown) that allow fluid from the vertical channel 504 to flow to the cutting edges 502 to remove material already cut and cool the tubular 101 as it is cut. Furthermore, the broach 110 allows the inner diameters of the tubulars 101, 102 to be reformed with one linear motion.
This saves time because the linear motion used to reform the inner diameter is already required by the traditional method for joining tubulars 101, 102.
In addition to a broach 110, other types of material reforming members are applicable according to aspects of the present invention. For example, a drill like member may be use to remove material from the connection. A honing member may also be inserted and rotated to remove the distortion. A ridge reamer may also be used to remove the distortion. Furthermore, other methods of reshaping the distortion without _g_ removing material exist. For example, a cylindrical member, also known as a roller expander, which expands when rotated may reshape the distortion by flattening the distortion against the walls of the tubulars. Also a smooth cone shaped member may be pulled through the tubular to reshape the tubular connection.
Figure 4 is another embodiment of the present invention, incorporating a material-reforming member attached to a telescoping tubular 405C. The sequence for joining tubulars 101, 102 would be analogous to those depicted in Figures 1 through 3.
The telescoping tubular 405C is capable of extending and retracting independently of other operations. The enlarged view in Figure 4 shows an example of a telescoping tubular 405C with an inner channel 418 for passing fluid. The telescoping tubular 405C
includes a piston 415 and cylinder 414 assembly operatively connected. The cylinder 414 may be fixed to the top drive adapter 105. The piston 415 is free to slide within the cylinder 414. A hydraulic line 416 is used to pump hydraulic fluid into a chamber 419 between the cylinder 414 and the piston 415. Seals 417 prevent the hydraulic fluid from leaking into the inner channel 418. As hydraulic fluid is pumped into the chamber 419, the piston 415 is forced up and the telescoping tubular 405C
retracts.
Conversely, pumping hydraulic fluid out of the chamber 419 will extend the tubular 405C.
One advantage of the telescoping tubular 405C is increased temporal efficiency.
Normally when the top drive adapter 105 is inserted into the upper tubular 101, the top drive unit 104 is raised until the entire inner tubular 405C is higher than the upper tubular 101. However, when the telescoping tubular 405C is retracted, the top drive unit 104 does not need to be raised as high for insertion and removal of the top drive adapter 105 because the inner tubular 405C may be retracted during insertion.
Further, because the telescoping tubular may be retracted at anytime, the inner diameter broach 110 may reform the tubular connection inner diameter 103B
anytime after the tubular connection 103 has been made. For example, the inner diameter broach 110 may reform the tubular connection inner diameter 103B before inserting the tubulars into wellbore 109 or while inserting the tubulars into the wellbore 109.
Preferably, the broach 110 reforms the tubular connection 103 inner diameter while lowering the tubular string 101, 102 into the wellbore 109. The telescoping tubular 405C allows the top drive adapter 105 to retract the telescoping inner tubular 405C with increased force because it is pulling against itself as opposed to pulling against the weight of the tubular string 101, 102 and the grip of the spider 113.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (49)
1. A method of joining tubulars at the surface of a well, comprising:
providing a tubular gripping member, a conveying member operatively connected to the tubular gripping member, and a reforming member;
gripping a first tubular with the tubular gripping member;
aligning the first tubular with a second tubular;
forming a connection between the first tubular and the second tubular; and reforming an inner diameter of the connection after the connection is formed.
providing a tubular gripping member, a conveying member operatively connected to the tubular gripping member, and a reforming member;
gripping a first tubular with the tubular gripping member;
aligning the first tubular with a second tubular;
forming a connection between the first tubular and the second tubular; and reforming an inner diameter of the connection after the connection is formed.
2. The method of claim 1, wherein reforming the inner diameter comprises removing a material from the connection.
3. The method of claim 1, wherein reforming the inner diameter comprises reshaping the inner diameter of the connection.
4. The method of claim 1, wherein reforming the inner diameter comprises:
placing a reforming member proximate to the connection; and actuating the reforming member.
placing a reforming member proximate to the connection; and actuating the reforming member.
5. The method of claim 4, wherein reforming the inner diameter further comprises moving the reforming member axially in relation to the first and second tubulars.
6. The method of claim 4, wherein reforming the inner diameter further comprises rotating the reforming member relative to the first and second tubulars.
7. The method of claim 6, wherein reforming the inner diameter further comprises moving the reforming member axially in relation to the first and second tubulars.
8. The method of claim 1, further comprising lowering the connected tubulars into the well.
9. The method of claim 8, wherein the inner diameter of the connection is reformed while lowering the connected tubulars into the well.
10. The method of claim 8, wherein the inner diameter of the connection is reformed before lowering the connected tubulars into the well.
11. The method of claim 1, further comprising:
reforming an outer diameter of the connection.
reforming an outer diameter of the connection.
12. A method of joining tubulars at the surface of a well, comprising:
suspending at least a portion of a first tubular in the well;
aligning the first tubular with a second tubular;
forming a connection between the first tubular and the second tubular; and reforming an outer diameter of the connection between the first and second tubulars, wherein reforming the outer diameter comprises placing a reforming member proximate to the connection, actuating the reforming member and moving the reforming member axially in relation to the first and second tubulars.
suspending at least a portion of a first tubular in the well;
aligning the first tubular with a second tubular;
forming a connection between the first tubular and the second tubular; and reforming an outer diameter of the connection between the first and second tubulars, wherein reforming the outer diameter comprises placing a reforming member proximate to the connection, actuating the reforming member and moving the reforming member axially in relation to the first and second tubulars.
13. The method of claim 12, wherein reforming the outer diameter comprises removing a material from the connection.
14. The method of claim 12, wherein reforming the outer diameter comprises reshaping the outer diameter of the connection.
15. The method of claim 12, wherein reforming the outer diameter comprises:
placing a reforming member proximate to the connection; and actuating the reforming member.
placing a reforming member proximate to the connection; and actuating the reforming member.
16. The method of claim 15, wherein reforming the outer diameter comprises moving the reforming member axially in relation to the first and second tubulars.
17. The method of claim 15, wherein reforming the outer diameter comprises rotating the reforming member relative to the first and second tubulars.
18. The method of claim 12, further comprising reforming the inner diameter of the connection between the first and second tubulars.
19. An apparatus for joining tubulars, comprising:
a top drive adapter configured to grip an outer surface of one of the tubulars;
a conveying member operatively connected to the tubular gripping member and at least partially insertable into an interior of the tubulars; and a reforming member operatively connected to the conveying member, wherein the reforming member is configured to be inserted into the tubulars.
a top drive adapter configured to grip an outer surface of one of the tubulars;
a conveying member operatively connected to the tubular gripping member and at least partially insertable into an interior of the tubulars; and a reforming member operatively connected to the conveying member, wherein the reforming member is configured to be inserted into the tubulars.
20. The apparatus of claim 19, wherein the tubular gripping member is a top drive adapter.
21. The apparatus of claim 19, wherein the reforming member comprises a material shaping member.
22. The apparatus of claim 21, wherein the material shaping member comprises a cone.
23. The apparatus of claim 21, wherein the material shaping member comprises a roller expander.
24. The apparatus of claim 19, wherein the reforming member comprises a material removal member.
25. The apparatus of claim 24, wherein the material removal member comprises a tool selected from the group consisting of a broach, a hone, a drill bit, and a ridge reamer.
26. The apparatus of claim 19, further comprising an outer reforming member for reforming an outer diameter of the tubulars.
27. The apparatus of claim 19, wherein the reforming member is rotatable.
28. The apparatus of claim 19, wherein the conveying member is extendable.
29. The apparatus of claim 19, wherein the conveying member comprises a piston and cylinder assembly.
30. The apparatus of claim 19, wherein the conveying member comprises one or more fluid channels.
31. The apparatus of claim 30, wherein the one or more fluid channels comprise one or more axial channels.
32. The apparatus of claim 30, wherein the one or more fluid channels comprise one or more radial channels.
33. A system for installing tubulars into a well comprising:
a top drive unit;
a reforming member operatively connected to the top drive unit, wherein the reforming member is configured to be inserted into the tubulars for reforming an inner portion of a tubular junction; and a gripping member operatively coupled to the top drive unit.
a top drive unit;
a reforming member operatively connected to the top drive unit, wherein the reforming member is configured to be inserted into the tubulars for reforming an inner portion of a tubular junction; and a gripping member operatively coupled to the top drive unit.
34. The system of claim 33, further comprising:
a power frame for moving one or more tools for connecting tubulars.
a power frame for moving one or more tools for connecting tubulars.
35. The system of claim 34, further comprising a bonding apparatus disposed on the power frame.
36. The system of claim 35, further comprising a second gripping member disposed in a rig floor.
37. The system of claim 36, further comprising a second reforming member disposed around the tubulars.
38. A method of joining tubulars at the surface of a well, comprising:
aligning an end of a first tubular with an end of a second tubular;
forming a connection between the ends of the first tubular and the second tubular; and reforming an inner diameter of the connection between the first and second tubulars, wherein reforming the inner diameter comprises rotating a reforming member relative to the first and second tubulars.
aligning an end of a first tubular with an end of a second tubular;
forming a connection between the ends of the first tubular and the second tubular; and reforming an inner diameter of the connection between the first and second tubulars, wherein reforming the inner diameter comprises rotating a reforming member relative to the first and second tubulars.
39. A method of joining tubulars at the surface of a well, comprising:
aligning a first tubular with a second tubular;
forming a connection between the first tubular and the second tubular;
reforming an inner diameter of the connection between the first and second tubulars; and lowering the connected tubulars into the well, wherein the inner diameter of the connection is reformed while lowering the connected tubulars into the well.
aligning a first tubular with a second tubular;
forming a connection between the first tubular and the second tubular;
reforming an inner diameter of the connection between the first and second tubulars; and lowering the connected tubulars into the well, wherein the inner diameter of the connection is reformed while lowering the connected tubulars into the well.
40. A method of joining tubulars at the surface of a well, comprising:
aligning a first tubular with a second tubular;
forming a connection between the first tubular and the second tubular;
positioning a reforming member adjacent the connection after the connection is formed;
reforming an inner diameter of the connection between the first and second tubulars; and lowering the connected tubulars into the well after the inner diameter of the connection is reformed.
aligning a first tubular with a second tubular;
forming a connection between the first tubular and the second tubular;
positioning a reforming member adjacent the connection after the connection is formed;
reforming an inner diameter of the connection between the first and second tubulars; and lowering the connected tubulars into the well after the inner diameter of the connection is reformed.
41. A method of joining tubulars at the surface of a well, comprising:
aligning a first tubular with a second tubular;
forming a connection between the first tubular and the second tubular;
reforming an inner diameter of the connection; and reforming an outer diameter of the connection.
aligning a first tubular with a second tubular;
forming a connection between the first tubular and the second tubular;
reforming an inner diameter of the connection; and reforming an outer diameter of the connection.
42. The method of claim 1, further comprising circulating a fluid through the first and second tubulars.
43. The method of claim 1, further comprising applying a pressurized seal on an upper portion of the first tubular.
44. The method of claim 1, wherein forming the tubular junction comprises bonding the first and second tubulars.
45. The method of claim 1, further comprising determining a minimum inner diameter in the first tubular.
46. A method of installing a tubular string in a wellbore, comprising:
placing a first tubular in the wellbore, the first tubular having an upper end;
joining a lower end of a second tubular to the upper end to form a tubular junction;
reforming at least an outer portion of the tubular junction; and applying a pressurized seal on an upper portion of the second tubular.
placing a first tubular in the wellbore, the first tubular having an upper end;
joining a lower end of a second tubular to the upper end to form a tubular junction;
reforming at least an outer portion of the tubular junction; and applying a pressurized seal on an upper portion of the second tubular.
47. The method of claim 46, further comprising circulating a fluid through the first and second tubulars.
48. The method of claim 46, further wherein forming the tubular junction comprises bonding the first and second tubulars.
49. The method of claim 46, wherein an inner portion of the tubular junction is reformed.
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US10/236,026 US7100697B2 (en) | 2002-09-05 | 2002-09-05 | Method and apparatus for reforming tubular connections |
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CA2439464C true CA2439464C (en) | 2007-11-06 |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6953141B2 (en) * | 2002-10-25 | 2005-10-11 | Weatherford/Lamb, Inc. | Joining of tubulars through the use of explosives |
EP2401470A2 (en) * | 2009-02-25 | 2012-01-04 | Weatherford/Lamb, Inc. | Pipe handling system |
EP2335855A1 (en) * | 2009-12-04 | 2011-06-22 | Siemens Aktiengesellschaft | Filler material when drilling passageway holes in hollow components, method and device for same |
WO2016106206A1 (en) * | 2014-12-23 | 2016-06-30 | Shell Oil Company | Plug apparatus and method |
EP3296047A1 (en) * | 2016-09-14 | 2018-03-21 | Maquinaria Geka S.A. | Punching device, punch and method |
US11376641B2 (en) * | 2017-11-30 | 2022-07-05 | Hard Metal Advantage, LLC | Method and apparatus for seam dressing |
CN111438405B (en) * | 2020-04-09 | 2021-07-16 | ç‡•å±±å¤§å¦ | Welded pipe finish machining method |
Family Cites Families (129)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US542923A (en) * | 1895-07-16 | Thill-coupling | ||
US1386908A (en) | 1920-03-12 | 1921-08-09 | Taylor William Henry | Rotary well-drilling machine |
US1842638A (en) | 1930-09-29 | 1932-01-26 | Wilson B Wigle | Elevating apparatus |
US2167338A (en) * | 1937-07-26 | 1939-07-25 | U C Murcell Inc | Welding and setting well casing |
US2214194A (en) | 1938-10-10 | 1940-09-10 | Frankley Smith Mfg Co | Fluid control device |
US2214429A (en) | 1939-10-24 | 1940-09-10 | William J Miller | Mud box |
US2522444A (en) | 1946-07-20 | 1950-09-12 | Donovan B Grable | Well fluid control |
US2633333A (en) | 1948-05-17 | 1953-03-31 | Lynn W Storm | Pipe spinner |
US2610690A (en) | 1950-08-10 | 1952-09-16 | Guy M Beatty | Mud box |
US3021739A (en) | 1957-12-23 | 1962-02-20 | Joy Mfg Co | Hydraulically controlled and operated power tong |
US2950639A (en) | 1958-08-11 | 1960-08-30 | Mason Carlton Tool Co | Power operated pipe wrench |
US3041901A (en) | 1959-05-20 | 1962-07-03 | Dowty Rotol Ltd | Make-up and break-out mechanism for drill pipe joints |
US3005655A (en) * | 1959-07-02 | 1961-10-24 | Clarence L Jeffrey | Well tubing retrieving device |
US3131586A (en) | 1960-05-11 | 1964-05-05 | Wilson John Hart | Mechanism for making up and breaking out screw threaded joints of drill stem and pipe |
US3086413A (en) | 1960-08-22 | 1963-04-23 | Mason Carlton Tool Co | Power operated pipe wrench and spinning means |
US3180186A (en) | 1961-08-01 | 1965-04-27 | Byron Jackson Inc | Power pipe tong with lost-motion jaw adjustment means |
US3122811A (en) | 1962-06-29 | 1964-03-03 | Lafayette E Gilreath | Hydraulic slip setting apparatus |
US3193116A (en) | 1962-11-23 | 1965-07-06 | Exxon Production Research Co | System for removing from or placing pipe in a well bore |
US3233315A (en) * | 1962-12-04 | 1966-02-08 | Plastic Materials Inc | Pipe aligning and joining apparatus |
US3220245A (en) | 1963-03-25 | 1965-11-30 | Baker Oil Tools Inc | Remotely operated underwater connection apparatus |
GB1087137A (en) | 1963-10-25 | 1967-10-11 | F N R D Ltd | Improvements relating to twist joints |
US3349455A (en) | 1966-02-01 | 1967-10-31 | Jack R Doherty | Drill collar safety slip |
US3443291A (en) | 1967-09-25 | 1969-05-13 | Jack R Doherty | Drill collar safety slip |
US3635105A (en) | 1967-10-17 | 1972-01-18 | Byron Jackson Inc | Power tong head and assembly |
US3518903A (en) | 1967-12-26 | 1970-07-07 | Byron Jackson Inc | Combined power tong and backup tong assembly |
US3475038A (en) | 1968-01-08 | 1969-10-28 | Lee Matherne | Pipe stabber with setscrews |
US3747675A (en) | 1968-11-25 | 1973-07-24 | C Brown | Rotary drive connection for casing drilling string |
US3559739A (en) | 1969-06-20 | 1971-02-02 | Chevron Res | Method and apparatus for providing continuous foam circulation in wells |
BE757087A (en) | 1969-12-03 | 1971-04-06 | Gardner Denver Co | REMOTELY CONTROLLED DRILL ROD UNSCREWING MECHANISM |
US3621548A (en) * | 1970-02-02 | 1971-11-23 | John C Kinley | Broach for well pipe |
US3808916A (en) | 1970-09-24 | 1974-05-07 | Robbins & Ass J | Earth drilling machine |
US3838613A (en) | 1971-04-16 | 1974-10-01 | Byron Jackson Inc | Motion compensation system for power tong apparatus |
US3722331A (en) | 1971-06-21 | 1973-03-27 | Ipcur Inst De Proiectari Cerce | Torque-controlled pipe-thread tightener |
US3766320A (en) | 1971-09-16 | 1973-10-16 | T Homme | Telephone alarm system |
US3796418A (en) | 1972-02-17 | 1974-03-12 | Byron Jackson Inc | Hydraulic pipe tong apparatus |
US3941348A (en) | 1972-06-29 | 1976-03-02 | Hydril Company | Safety valve |
US3933108A (en) | 1974-09-03 | 1976-01-20 | Vetco Offshore Industries, Inc. | Buoyant riser system |
US3952936A (en) | 1974-10-07 | 1976-04-27 | Dearman Timothy Charles | Reforming pipe clamp |
US3986564A (en) | 1975-03-03 | 1976-10-19 | Bender Emil A | Well rig |
US4005621A (en) | 1976-04-27 | 1977-02-01 | Joy Manufacturing Company | Drilling tong |
US4257442A (en) | 1976-09-27 | 1981-03-24 | Claycomb Jack R | Choke for controlling the flow of drilling mud |
US4142739A (en) | 1977-04-18 | 1979-03-06 | Compagnie Maritime d'Expertise, S.A. | Pipe connector apparatus having gripping and sealing means |
US4159637A (en) | 1977-12-05 | 1979-07-03 | Baylor College Of Medicine | Hydraulic test tool and method |
DE2815705C2 (en) | 1978-04-12 | 1986-10-16 | Rolf 3100 Celle Rüße | Method and device for centering casing pipes |
US4170908A (en) | 1978-05-01 | 1979-10-16 | Joy Manufacturing Company | Indexing mechanism for an open-head power tong |
US4334444A (en) | 1978-06-26 | 1982-06-15 | Bob's Casing Crews | Power tongs |
US4221269A (en) | 1978-12-08 | 1980-09-09 | Hudson Ray E | Pipe spinner |
US4402239A (en) | 1979-04-30 | 1983-09-06 | Eckel Manufacturing Company, Inc. | Back-up power tongs and method |
USRE31699E (en) | 1979-04-30 | 1984-10-09 | Eckel Manufacturing Company, Inc. | Back-up power tongs and method |
US4262693A (en) | 1979-07-02 | 1981-04-21 | Bernhardt & Frederick Co., Inc. | Kelly valve |
US4246809A (en) | 1979-10-09 | 1981-01-27 | World Wide Oil Tools, Inc. | Power tong apparatus for making and breaking connections between lengths of small diameter tubing |
US4304261A (en) | 1979-12-10 | 1981-12-08 | Forester Buford G | Valve |
US4291762A (en) | 1980-01-18 | 1981-09-29 | Drill Tech Equipment, Inc. | Apparatus for rapidly attaching an inside blowout preventer sub to a drill pipe |
US4346629A (en) | 1980-05-02 | 1982-08-31 | Weatherford/Lamb, Inc. | Tong assembly |
US4401000A (en) | 1980-05-02 | 1983-08-30 | Weatherford/Lamb, Inc. | Tong assembly |
US4573359A (en) | 1980-07-02 | 1986-03-04 | Carstensen Kenneth J | System and method for assuring integrity of tubular sections |
US4315553A (en) | 1980-08-25 | 1982-02-16 | Stallings Jimmie L | Continuous circulation apparatus for air drilling well bore operations |
US4445265A (en) * | 1980-12-12 | 1984-05-01 | Smith International, Inc. | Shrink grip drill pipe fabrication method |
US4437363A (en) | 1981-06-29 | 1984-03-20 | Joy Manufacturing Company | Dual camming action jaw assembly and power tong |
DE3138870C1 (en) | 1981-09-30 | 1983-07-21 | Weatherford Oil Tool Gmbh, 3012 Langenhagen | Device for screwing pipes |
FR2523635A1 (en) | 1982-03-17 | 1983-09-23 | Bretagne Atel Chantiers | DEVICE FOR MOUNTING A DRILL ROD TRAIN AND FOR TRAINING IN ROTATION AND TRANSLATION |
US4442892A (en) | 1982-08-16 | 1984-04-17 | Domenico Delesandri | Apparatus for stabbing and threading a safety valve into a well pipe |
US4494424A (en) | 1983-06-24 | 1985-01-22 | Bates Darrell R | Chain-powered pipe tong device |
US4565003A (en) | 1984-01-11 | 1986-01-21 | Phillips Petroleum Company | Pipe alignment apparatus |
NO154578C (en) | 1984-01-25 | 1986-10-29 | Maritime Hydraulics As | BRIDGE DRILLING DEVICE. |
US4759239A (en) | 1984-06-29 | 1988-07-26 | Hughes Tool Company | Wrench assembly for a top drive sub |
HU195559B (en) | 1984-09-04 | 1988-05-30 | Janos Fenyvesi | Drilling rig of continuous operation |
US4643259A (en) | 1984-10-04 | 1987-02-17 | Autobust, Inc. | Hydraulic drill string breakdown and bleed off unit |
US4625796A (en) * | 1985-04-01 | 1986-12-02 | Varco International, Inc. | Well pipe stabbing and back-up apparatus |
US4709766A (en) | 1985-04-26 | 1987-12-01 | Varco International, Inc. | Well pipe handling machine |
US4773218A (en) | 1985-06-18 | 1988-09-27 | Ngk Spark Plug Co., Ltd. | Pulse actuated hydraulic pump |
US4715625A (en) | 1985-10-10 | 1987-12-29 | Premiere Casing Services, Inc. | Layered pipe slips |
US4709599A (en) | 1985-12-26 | 1987-12-01 | Buck David A | Compensating jaw assembly for power tongs |
US4712284A (en) | 1986-07-09 | 1987-12-15 | Bilco Tools Inc. | Power tongs with hydraulic friction grip for speciality tubing |
US4836064A (en) | 1987-04-10 | 1989-06-06 | Slator Damon T | Jaws for power tongs and back-up units |
US4813493A (en) | 1987-04-14 | 1989-03-21 | Triten Corporation | Hydraulic top drive for wells |
US5000065A (en) | 1987-09-08 | 1991-03-19 | Martin-Decker, Inc. | Jaw assembly for power tongs and like apparatus |
US4800968A (en) | 1987-09-22 | 1989-01-31 | Triten Corporation | Well apparatus with tubular elevator tilt and indexing apparatus and methods of their use |
US4811635A (en) | 1987-09-24 | 1989-03-14 | Falgout Sr Thomas E | Power tong improvement |
CA1302391C (en) | 1987-10-09 | 1992-06-02 | Keith M. Haney | Compact casing tongs for use on top head drive earth drilling machine |
US4878546A (en) | 1988-02-12 | 1989-11-07 | Triten Corporation | Self-aligning top drive |
NO163973C (en) | 1988-04-19 | 1990-08-15 | Maritime Hydraulics As | MOMENT tong. |
GB8822574D0 (en) | 1988-09-26 | 1988-11-02 | Gbe International Plc | Vibratory steaming conveyor |
GB8828087D0 (en) | 1988-12-01 | 1989-01-05 | Weatherford Us Inc | Active jaw for power tong |
US4938109A (en) | 1989-04-10 | 1990-07-03 | Carlos A. Torres | Torque hold system and method |
GB8910118D0 (en) * | 1989-05-03 | 1989-06-21 | Shell Int Research | Method and device for joining well tubulars |
US5022472A (en) | 1989-11-14 | 1991-06-11 | Masx Energy Services Group, Inc. | Hydraulic clamp for rotary drilling head |
US5251709A (en) | 1990-02-06 | 1993-10-12 | Richardson Allan S | Drilling rig |
US5092399A (en) | 1990-05-07 | 1992-03-03 | Master Metalizing And Machining Inc. | Apparatus for stabbing and threading a drill pipe safety valve |
DE4108760A1 (en) | 1990-05-11 | 1991-11-14 | Weatherford Prod & Equip | DEVICE FOR INITIATING FORCES IN MOVABLE BODIES |
GB9019416D0 (en) | 1990-09-06 | 1990-10-24 | Frank S Int Ltd | Device for applying torque to a tubular member |
US5152554A (en) | 1990-12-18 | 1992-10-06 | Lafleur Petroleum Services, Inc. | Coupling apparatus |
GB9107788D0 (en) | 1991-04-12 | 1991-05-29 | Weatherford Lamb | Power tong for releasing tight joints |
GB9107813D0 (en) | 1991-04-12 | 1991-05-29 | Weatherford Lamb | Tong |
GB9107826D0 (en) | 1991-04-12 | 1991-05-29 | Weatherford Lamb | Rotary for use in a power tong |
US5209302A (en) | 1991-10-04 | 1993-05-11 | Retsco, Inc. | Semi-active heave compensation system for marine vessels |
US5390568A (en) | 1992-03-11 | 1995-02-21 | Weatherford/Lamb, Inc. | Automatic torque wrenching machine |
GB9212723D0 (en) | 1992-06-16 | 1992-07-29 | Weatherford Lamb | Apparatus for connecting and disconnecting threaded members |
DE4229345C2 (en) | 1992-09-04 | 1998-01-08 | Weatherford Prod & Equip | Device for introducing forces into movable bodies |
US5297833A (en) | 1992-11-12 | 1994-03-29 | W-N Apache Corporation | Apparatus for gripping a down hole tubular for support and rotation |
US6082225A (en) * | 1994-01-31 | 2000-07-04 | Canrig Drilling Technology, Ltd. | Power tong wrench |
GB2287263B (en) | 1994-03-04 | 1997-09-24 | Fmc Corp | Tubing hangers |
NO180552C (en) * | 1994-06-09 | 1997-05-07 | Bakke Oil Tools As | Hydraulically releasable disconnecting device |
IT1266026B1 (en) | 1994-06-14 | 1996-12-16 | Soilmec Spa | DEVICE FOR THE LOADING AND SCREWING OF RODS AND LINING PIPES COMPONENTS OF A DRILLING BATTERY |
US5452923A (en) | 1994-06-28 | 1995-09-26 | Canadian Fracmaster Ltd. | Coiled tubing connector |
US5634671A (en) | 1994-08-01 | 1997-06-03 | Dril-Quip, Inc. | Riser connector |
US5577566A (en) | 1995-08-09 | 1996-11-26 | Weatherford U.S., Inc. | Releasing tool |
US5566769A (en) * | 1994-10-31 | 1996-10-22 | Eckel Manufacturing Company, Inc. | Tubular rotation tool for snubbing operations |
US5520072A (en) | 1995-02-27 | 1996-05-28 | Perry; Robert G. | Break down tong apparatus |
US5547314A (en) | 1995-06-08 | 1996-08-20 | Marathon Oil Company | Offshore system and method for storing and tripping a continuous length of jointed tubular conduit |
GB2307939B (en) * | 1995-12-09 | 2000-06-14 | Weatherford Oil Tool | Apparatus for gripping a pipe |
NO302774B1 (en) * | 1996-09-13 | 1998-04-20 | Hitec Asa | Device for use in connection with feeding of feeding pipes |
US5957195A (en) * | 1996-11-14 | 1999-09-28 | Weatherford/Lamb, Inc. | Wellbore tool stroke indicator system and tubular patch |
US5890549A (en) * | 1996-12-23 | 1999-04-06 | Sprehe; Paul Robert | Well drilling system with closed circulation of gas drilling fluid and fire suppression apparatus |
US6360633B2 (en) * | 1997-01-29 | 2002-03-26 | Weatherford/Lamb, Inc. | Apparatus and method for aligning tubulars |
US6082224A (en) * | 1997-01-29 | 2000-07-04 | Weatherford/Lamb, Inc. | Power tong |
US6536520B1 (en) * | 2000-04-17 | 2003-03-25 | Weatherford/Lamb, Inc. | Top drive casing system |
US6199641B1 (en) * | 1997-10-21 | 2001-03-13 | Tesco Corporation | Pipe gripping device |
US6070500A (en) * | 1998-04-20 | 2000-06-06 | White Bear Energy Serives Ltd. | Rotatable die holder |
US6065372A (en) * | 1998-06-02 | 2000-05-23 | Rauch; Vernon | Power wrench for drill pipe |
AU9765698A (en) * | 1998-10-19 | 2000-05-08 | Well Engineering Partners B.V. | Making up and breaking out of a tubing string in a well while maintaining continuous circulation |
US6425444B1 (en) * | 1998-12-22 | 2002-07-30 | Weatherford/Lamb, Inc. | Method and apparatus for downhole sealing |
NO991722L (en) * | 1999-02-08 | 2000-08-09 | Total Catcher As | Method and apparatus for retrieving borehole equipment |
US6431626B1 (en) * | 1999-04-09 | 2002-08-13 | Frankis Casing Crew And Rental Tools, Inc. | Tubular running tool |
US6206096B1 (en) * | 1999-05-11 | 2001-03-27 | Jaroslav Belik | Apparatus and method for installing a pipe segment in a well pipe |
US6223629B1 (en) * | 1999-07-08 | 2001-05-01 | Daniel S. Bangert | Closed-head power tongs |
CA2287696C (en) * | 1999-10-28 | 2005-11-22 | Leonardo Ritorto | Locking swivel device |
US6412554B1 (en) * | 2000-03-14 | 2002-07-02 | Weatherford/Lamb, Inc. | Wellbore circulation system |
US6419147B1 (en) * | 2000-08-23 | 2002-07-16 | David L. Daniel | Method and apparatus for a combined mechanical and metallurgical connection |
-
2002
- 2002-09-05 US US10/236,026 patent/US7100697B2/en not_active Expired - Fee Related
-
2003
- 2003-09-04 CA CA002439464A patent/CA2439464C/en not_active Expired - Fee Related
- 2003-09-04 NO NO20033915A patent/NO20033915L/en unknown
- 2003-09-05 GB GB0320905A patent/GB2394734B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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NO20033915D0 (en) | 2003-09-04 |
US7100697B2 (en) | 2006-09-05 |
GB2394734B (en) | 2006-05-10 |
NO20033915L (en) | 2004-03-08 |
US20040045717A1 (en) | 2004-03-11 |
CA2439464A1 (en) | 2004-03-05 |
GB2394734A (en) | 2004-05-05 |
GB0320905D0 (en) | 2003-10-08 |
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