EP0285386A2 - Innere Zange für eine Oberantriebseinrichtung - Google Patents

Innere Zange für eine Oberantriebseinrichtung Download PDF

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Publication number
EP0285386A2
EP0285386A2 EP88302818A EP88302818A EP0285386A2 EP 0285386 A2 EP0285386 A2 EP 0285386A2 EP 88302818 A EP88302818 A EP 88302818A EP 88302818 A EP88302818 A EP 88302818A EP 0285386 A2 EP0285386 A2 EP 0285386A2
Authority
EP
European Patent Office
Prior art keywords
jaws
casing
tubular
drag ring
rotation
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.)
Granted
Application number
EP88302818A
Other languages
English (en)
French (fr)
Other versions
EP0285386A3 (en
EP0285386B1 (de
Inventor
Keith Mallory Haney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
W-N APACHE Corp
Apache Corp
Original Assignee
W-N APACHE Corp
Apache Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US07/079,024 external-priority patent/US4762187A/en
Application filed by W-N APACHE Corp, Apache Corp filed Critical W-N APACHE Corp
Priority to AT88302818T priority Critical patent/ATE90141T1/de
Publication of EP0285386A2 publication Critical patent/EP0285386A2/de
Publication of EP0285386A3 publication Critical patent/EP0285386A3/en
Application granted granted Critical
Publication of EP0285386B1 publication Critical patent/EP0285386B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
    • 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
    • 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
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E21B3/022—Top drives

Definitions

  • the present invention relates to an apparatus for applying a torque to a drilling tubular in an earth drilling machine, and in particular to an apparatus for applying a torque to casing.
  • casing After a bore hole has been drilled in an earth formation it is conventional in many applications to line the bore hole with a large diameter casing. Such casing is typically provided with threads at each end, and adjacent lengths of casing are threaded together to form a string of casing which is lowered into the bore hole. In assembling the string of casing it is necessary to apply a pre-determined torque to adjacent lengths of casing in order to make up the threaded joints properly.
  • hydraulic chain tongs such as Model CH-20 of Weatherford Company have been used to make up threaded joints on large diameter casing. Such chain tongs grip the exterior of the casing to apply the desired torque. Though suitable for many applica­tions, such hydraulic chain tongs suffer from severe disadvantages that make them inappropriate for certain applications. Hydraulic chain tongs for large diameter casing are unacceptably large, heavy, slow, and expensive for the use with modern top head drive drilling machines of the type that provide limited space on the drilling floor around the string.
  • U.S. Patent 3,747,675 to Brown discloses another rotary drive connection for casing drilling string.
  • This drive connection is intended to inter­connect a rotary swivel with a string of casing in a drilling operation, and it includes internal slips for lifting the string, elements for gripping the interior of the casing to rotate the string, and a sliding seal for sealing off the interior of the string.
  • the seal engages the interior side wall of the casing, it does not utilize the threaded end of the casing to prevent drilling fluid from escaping from the casing.
  • the interior side wall is not suffi­ciently smooth or round to create an effective sealing surface.
  • the internal gripping elements are designed to lock when the drive connection is rotated in a right hand sense, and no means are pro­vided for selectively releasing the internal gripping elements while the drive connection is being rotated in a right hand sense.
  • the sealing potential of the threaded upper end of the casing (which is machined to act as an excellent sealing surface) is not used and the associated advantages are lost.
  • the present invention is directed to an improved apparatus for applying torque to a drilling tubular such as a large diameter casing, which over­comes the disadvantages described above.
  • an apparatus for applying a torque to a tubular in an earth drilling machine of the type having a top head drive assembly.
  • the apparatus of this invention includes a body having an upper end and a lower end. Means are provided for mounting the body beneath the top head drive assembly for rotation by the top head drive assembly. At least one jaw is secured to the lower end of the body for movement between at least one extended position in which the jaw engages an interior surface of the tubular to rotate the tubular with the body, and a retracted position in which the jaw is out of engage­ment with the interior surface. Means are provided for selectively moving the jaw between the extended and retracted positions.
  • a threaded plug is mounted to an intermediate portion of the body and is configured to mate with and seal off the upper end of the tubular.
  • the body also defines a central passageway in these preferred embodiments which extends between the upper and lower portions to allow drilling mud to be introduced into the casing through the body.
  • a jaw actuating system which includes a drag ring coupled to the jaw and a friction brake engaged with the drag ring such that the jaw can be set and released by rotation of the body in the appropriate direction. Means can be provided for overriding the jaw actuating system when it is desired to engage the threaded plug with the upper end of the tubular.
  • the apparatus of this invention By engaging an interior surface of the tubular or casing, the apparatus of this invention provides a remarkably lightweight, compact, and inexpensive assembly which is well suited for use with top head drive drilling machines. Because the device is suspended from the top head drive assembly, a large working area on the drilling floor is not required. Furthermore, in the preferred embodiments described below the body can quickly be mated with the threaded upper end of the tubular or casing if there is a threat of a blowout, and drilling, mud can then be injected into the tubular as needed to prevent the blowout. In this way, the upper end of the tubular is used to provide a reliable high pressure seal. Thus, the embodiments described below provide important safety advantages over the hydraulic chain tongs described above.
  • FIG. 1 shows an elevational view of a portion of a top head drive drilling machine 10 on which is mounted a first presently preferred embodiment of this invention.
  • this drilling machine 10 includes a vertical mast 12 and a top head drive assembly 14 which is mounted for movement along the length of the mast 12.
  • the top head drive assembly 14 is supported on the mast 12 by cables 16 which are controlled by conventional draw works (not shown) in order to position the top head drive assembly 14 at any desired point along the mast 12.
  • the top head drive assembly 14 includes a load beam 18 which forms the principal structural component of the top head drive assembly 14.
  • a trans­mission 20 is mounted above the load beam, and one or more hydraulic or electric motors 22 supply power to the transmission 20 to rotate a quill 24.
  • the quill 24 is used to suspend, lift and rotate down hole tubulars during drilling and casing operations.
  • an internal wrench 40 is rigidly mounted to the lower end of the quill 24 so as to rotate in unison with the quill 24.
  • This internal wrench 40 represents the presently preferred embodiment of the invention, and it is used to mechanically interconnect the quill 24 with a length of casing 26.
  • this casing 26 is provided at its upper end with a coupling 28.
  • both ends of the casing 26 are provided with external threads sized to mate with internal threads on the coupling 28. In use, adjacent lengths of casing 26 are secured together by means of the coupling 28.
  • the casing 26 defines an internal surface 30 which as described below is engaged by the internal wrench 40.
  • FIG. 2 shows a more detailed elevation of the internal wrench 40.
  • This wrench 40 includes a cylin­drical body 42 which defines an upper end 44 and a lower end 46. As shown in FIG. 2 the body 42 and in particular the lower end 46 are shaped to fit within the casing 26.
  • the body 42 defines a through passage­way 48 which extends from the upper end 44 to the lower end 46.
  • the upper end 44 of the body 42 defines a set of upper threads 50 which are adapted to mate with an adapter sub which is in turn threaded to the lower end of the quill 24.
  • the upper threads 50 support the wrench 40 beneath the quill 24.
  • a mud nozzle 52 is secured to the lower end 46 of the body 42 to direct drilling mud passing through the passageway 48 away from the lower end 46.
  • a plug 54 is securely and rigidly mounted to an intermediate portion of the body 42.
  • This plug 54 defines a set of external threads 56 which are sized to mate with the uppermost threads of the coupling 28. When the plug 54 is screwed into the coupling 28 it seals off the upper end of the casing 26.
  • the wrench 40 includes a set of jaws 60 which are pivotably mounted to the lower end 46 to move in a plane transverse to the passageway 48 between extended and retracted positions.
  • Each of the jaws 60 defines an outer end 62 which is shaped to engage the internal surface 30 mechanically.
  • the outer ends 62 of the jaws 60 are hardened and shaped (as for example with teeth or by means of knurling) so as to bite into and securely grip the internal surface 30.
  • each of the jaws 60 defines an inner end 64 as well as a respective slot 63 near the outer end 62.
  • the inner ends 64 are pivotably mounted to the body 42 by means of pins 66 and shafts 68.
  • a total of six jaws 60 and two shafts 62 are provided.
  • Two diametrically opposed jaws 60 are mounted to the lower ends of the shafts 68 so as to rotate with the shafts 68.
  • the remaining jaws 60 rotate about the pins 66 which are threadedly engaged with the lower end 46 of the body 42.
  • the shafts 68 are each mounted in a respective bore 58 defined by the body 42 to extend parallel to the passageway 48. As explained in detail below, these shafts 68 form part of a means for rotating the jaws 60 between the extended and retracted positions.
  • Bushings 70 are provided around the shafts 68 and the pins 66 in order to reduce friction associated with movement of the jaws 60.
  • Each of the shafts 68 is secured at its lower end to a respective one of the jaws 60 by means of a bolt 72 and a cap plate 74.
  • a key 86 is provided between each of the shafts 68 and the respective jaw 60 to prevent the jaws 60 from rotating with respect to the shafts 68.
  • the jaws 60 are linked together by upper and lower rings 76, 78 to insure that the jaws 60 move in unison between the extended and retracted positions shown in FIGURES 4 and 4a, respectively.
  • the upper and lower rings 76, 78 are secured together by pins 80 which ride in the slots 83.
  • the shafts 68 rotate two of the jaws 60, and these jaws 60 in turn rotate the remaining jaws 60 by means of the rings 76, 78.
  • the bores 58 are sealed around the shafts 68 by O-ring seals 82. This is done to prevent high pressure fluids from escaping from the casing 26 via the bores 58 when the plug 54 is mated with the coupling 28.
  • the shafts 68 are held in place in the bores 58 by locking rings 84.
  • the upper ends of the shafts 68 are provided with splines 88 shaped to engaged correspondingly shaped openings in torque arms 90.
  • These torque arms 90 extend laterally away from the body 40 along a plane transverse to the axis of the passageway 48, and each of the torque arms 90 defines a slot 92 at its outer end.
  • a drag ring 93 is positioned to encircle the body 40, as best shown in FIG. 5. This drag ring 93 is supported in place by fasteners 94 positioned to slide in the slots 92.
  • a friction brake 96 is mounted to the top head drive assembly 14. This friction brake 96 includes brake shoes 98 positioned to engage the drag ring 93 frictionally.
  • each of the followers 100 includes a roller 102 rotatably mounted on a shaft at the end of the follower 100.
  • Each of the followers 100 is secured at a fixed rotational position with respect to the respective shaft 68 by means of a set screw 104 and a corresponding flat on the shaft 68.
  • the wrench 40 operates as follows. When it is desired to apply a torque to a casing 26 in order to make up the casing 26 with an adjacent coupling, the lower end 46 of the body 42 is lowered into the casing 26, to the approximate position shown in FIG. 2. Of course, at this time the jaws 60 are in the retracted position shown in FIGURE 4a.
  • the top head drive assembly 14 is then used to rotate the quill 24 so as to rotate the internal wrench 40 to make up the lower threaded connection of the casing 26.
  • This rotation of the body 40 causes the friction brake 96 to shift the drag ring 93 with respect to the body 42 as shown in FIGURE 5, thereby rotating the shafts 68 by the means of the torque arms 90.
  • the motor 22 is used to rotate the quill 24 in the reverse direction.
  • This reverse rotation causes the friction brake 96 to shift the drag ring 93 with respect to the body 42 as shown in FIGURE 5a, thereby rotating the shafts 68 in a reverse direction and pivoting the jaws from the extended position shown in FIG. 4 to the retracted position shown in FIGURE 4a.
  • the jaws 60 are out of contact with the internal surface 30 and the wrench 40 can easily be lifted out of the casing 26 without damaging the threads of the coupling 26.
  • the wrench 40 can be used to prevent the blowout.
  • the top head drive assembly 14 is merely lowered to cause the internal wrench 40 to move more deeply into the casing 26.
  • the followers 100 normally ride in the coupling 28 above the upper end of the casing 26. In this position the followers 100 do not interfere with the proper setting of the jaws 60 as described above. However, when the wrench 40 is moved more deeply into the casing 26, the rollers 102 of the followers 100 engage the upper end of the casing 26 and then move into the casing 26.
  • the followers 100 rotate the shafts 68 so as to move the jaws 60 to the retracted position, thereby overriding the forces applied to the jaws by the drag ring 93 tending to engage the jaws with the casing 26.
  • the jaws 60 are out of engagement with the casing 26
  • continued rotation of the quill 24 as the wrench is lowered makes up the threads 56 of the plug 54 with the upper threads of the coupling 28.
  • the upper end of the casing 26 can be sealed quickly.
  • drilling mud can be introduced into the casing 26 by means of the central passageway 48 and the mud nozzle 52 in order to stabilize the mud in the bore hole.
  • the drag ring 93, torque arm 90 and shafts 68 cooperate to form means for pivoting the jaws 60 between the extended and retracted positions in response to rotation of the wrench 40.
  • rotation of the wrench 40 in the first direction sets the jaws 60 against the casing 26, and rotation in the reverse direction disengages the jaws 60 from the casing 26.
  • the upper and lower rings operate as means for linking the jaws 60 together to insure that they move in unison.
  • other means can be provided for pivoting the jaws 60, as for example hydraulic actuators or the like.
  • followers 100 act as means for automatically with­drawing the jaws 60 from the casing 26 as the wrench 40 is moved beyond a pre-determined point into the casing 26.
  • other means can be provided for performing this function, as for example a means for selectively releasing the friction brake 96 so as to free the jaws 60 for movement away from the internal surface 30.
  • FIGURES 7-14 show various views of a wrench 200 which incorporates a second referred embodiment of this invention.
  • This wrench 200 includes a body 202 which defines an upper end 204 and a lower end 206 (FIGURES 7 and 10).
  • a central passageway 208 extends between the upper and lower ends 204, 206 to conduct drilling mud into a string of casing suspended by the wrench 200.
  • the upper end 204 defines a set of upper threads 210 which are sized to mate with an adapter sub which is in turn threaded to the lower end of the quill 24 described above.
  • the upper threads 210 support the wrench 200 beneath the quill 24.
  • the lower end of the passageway 208 terminates in a mud nozzle 212, and the lowermost end of the mud nozzle 212 terminates in a basket made up of a flange 214 and a circumferential rim 216.
  • the rim 216 defines an array of openings 218.
  • the body 202 defines a plug 220 at an inter­mediate position between the upper and lower ends 204, 206 (FIGURE 10).
  • This plug 220 defines a set of external threads 222 which are sized to mate with the internal threads of a cylindrical coupling 28 threadedly mounted, to the upper end of a length of casing 26.
  • the body 202 also defines an array of upper bores 224 and an aligned array of lower bores 226.
  • the wrench 200 includes four jaws 228, each of which defines a first outer end 230 and a second outer end 232.
  • first outer ends 230 engage an interior surface 30 of the casing 26 for clockwise rotation of the casing 26 (as seen from above), and the second outer ends 232 engage the interior surface 30 in order to rotate the casing 26 in a counter-clockwise direction.
  • each of the jaws 228 defines a respective dovetail flange 240, and the jaws 228 are positioned adjacent to respective sides of a rectangular guide plate 242.
  • the guide plate 242 defines four dovetail shaped guide slots 244, each of which receives a respective one of the dovetail flanges 240.
  • each of the jaws 228 is guided for sliding movement parallel to one of the sides of the guide plate 242.
  • each of the shafts 260 is rotatably mounted in the bores 224, 226, and each of the shafts 260 is coupled to a respective one of the jaws 228 by a set of links 248a, 248b, 248c (FIGURE 11).
  • the links 248a are mounted to pivot about respective pins 250 which are secured to the guide plate 242.
  • Each of the links 248a is coupled to a respective one of the jaws 228 by means of a slot 254 formed in the end of the link 248a and a pin 246 secured to the respective jaw 228.
  • Each of the links 248c is keyed to a respective one of the shafts 260, and each of the links 248b interconnects the associated links 248a, 248c via pivots 252.
  • rotation of the shafts 260 operates the linkage made up of the links 248a, 248b, 248c to move the jaws 228 between the extreme positions shown in FIGURES 11a and 11b.
  • the outer ends 230 are in contact with the interior surface 30 of the casing 26 such that the jaws 228 transmit torque effectively to the casing 26 to rotate the casing 26 in a clockwise direction (as seen from above).
  • the outer ends 232 are in contact with the casing 26 to rotate the casing 26 in a counterclockwise direction (as seen from above).
  • both of the ends 230, 232 are provided with directional gripping teeth as shown generally in FIGURE 14.
  • the upper bores 224 are sealed around the shafts 260 by means of bronze bearings 262 and chevron seals 264 which are held in place by snap rings 268.
  • an O-ring 266 is provided to reduce contamination of the chevron seal 264.
  • each of the shafts 260 is keyed to a respective torque arm 270 which extends generally radially as shown in FIGURE 8.
  • Each of the torque arms 270 defines a respective slot 272 and the torque arms 270 support an annular drag ring 274.
  • Fasteners 276 extend between the drag ring 274 and the torque arms 270 through the slots 272 in order to allow limited sliding motion between the torque arms 270 and the drag ring 274.
  • a friction brake 278 such as a releasable air brake is schematically shown at 278. When applied, this brake 278 provides a frictional drag on the drag ring 274 in order to rotate the drag ring 274 with respect to the body 202.
  • a set of springs 280 are mounted between the drag ring 274 and the body 202 by means of spring anchors 282, as shown in FIGURE 8. These springs 280 are balanced so as to bias the drag ring 274 to the position shown in FIGURES 8 and 11, in which each of the torque arms 270 is positioned at the midpoint of its travel.
  • the wrench 200 operates as follows.
  • the body 202 is securely threaded in place to an adapter below the quill such that the body 202 is supported and rotated by the quill.
  • the springs 280 center the torque arms 270, thereby biasing the jaws 228 to a central, retracted position, in which neither of the ends 230, 232 is in contact with the casing 26 (FIGURE 11).
  • the lower end 206 of the body 202 is lowered into the casing 26 well past the coupling 28.
  • the friction brake 278 is then set, and the quill is used to rotate the wrench 200 in a clockwise direction.
  • Rotation of the wrench 200 in a clockwise direction shifts the drag ring 274 with respect to the body 202 and thereby moves the jaws 228 to the position shown in FIGURE 11a, in which the jaws 228 grip the internal surface 30 of the casing 26 for clockwise rotation.
  • the brake 278 When it is desired to release the wrench 200 from the casing 26 the brake 278 is released and the wrench 200 is rotated by about 20 degrees in the counter-clockwise direction. This counter-clockwise rotation frees the jaws 228 from the casing 26 and allows the springs 280 to center the jaws 228, out of contact with the casing 26. Once the jaws 228 have been released, the wrench 200 can be withdrawn from the casing 26.
  • the wrench 200 can be rotated in the counterclockwise direction while holding the brake 278 in engagement with the drag ring 274.
  • the drag ring 274 is shifted with respect to the body 202 to move the jaws 228 to the position shown in FIGURE 11b, in which the jaws 228 grip the casing 26 for counter-clockwise rotation.
  • the wrench 200 is fully bidirectional and can be used both to make up and break out casing joints.
  • the wrench 200 can be quickly disengaged from the casing 26 by releasing the brake 278 and rotating the wrench 200 slightly, as described above, and then the wrench 200 can be rotated in the clockwise direc­tion as it is lowered.
  • the brake 278 is disengaged from the drag ring 274, the jaws 228 remain in the retracted position shown in FIGURE 11 and the threads 222 of the plug 220 can readily be engaged with the uppermost threads of the coupling 28 to form a fluid tight seal and thereby prevent a blowout.
  • Drilling mud can be introduced as necessary through the passageway 208 into the casing string.
  • the coupling 28 is designed to create a fluid tight threaded seal, and thus the plug 220 provides a reliable and effective seal for the casing 26.
  • the seals including the chevron seal 264 and the O-ring 266 prevent the leakage of drilling fluid through the plug 220.
  • the wrench 200 provides a number of important advantages. Perhaps most importantly the jaws 228 are fully bidirectional, up to the breakout torque of the threaded connections between the wrench 200 and the quill 24. As explained above the wrench 200 can be used both to make up and break out threaded connections with the casing 26. Additionally, the jaws 228 contact the casing 26 well into the casing 26 and some distance from the coupling 28. In this way the risk of damaging the threads near the upper end of the casing 26 due to out of roundness or "egging" during torquing operations is minimized. In addition, the shafts 260 are positioned radially outside the structural portion of the body 202 thereby eliminating stress risers.
  • the wrench 200 can safely rotate, support, and isolate the entire casing string during any kick requiring that the wrench be made up to the casing coupling to prevent a blowout.
  • the basket made up of the flange 214 and the rim 216 is configured to provide a stable base or support for the wrench 200 to allow the wrench 200 to be stored and transported in a vertical position.
  • This basket also performs as a mud shield and as an extended mud injection pipe to reduce the amount of drilling mud that splashes onto the jaws 228 and the associated linkage.
  • the basket substantially blocks the interior of the casing 22 to prevent small pieces or parts from falling into the bore hole in the event of a catastrophic failure of the internal mechanism of the wrench 200.
EP88302818A 1987-04-02 1988-03-30 Innere Zange für eine Oberantriebseinrichtung Expired - Lifetime EP0285386B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88302818T ATE90141T1 (de) 1987-04-02 1988-03-30 Innere zange fuer eine oberantriebseinrichtung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US3448287A 1987-04-02 1987-04-02
US34482 1987-04-02
US07/079,024 US4762187A (en) 1987-07-29 1987-07-29 Internal wrench for a top head drive assembly
US79024 1987-07-29

Publications (3)

Publication Number Publication Date
EP0285386A2 true EP0285386A2 (de) 1988-10-05
EP0285386A3 EP0285386A3 (en) 1989-03-29
EP0285386B1 EP0285386B1 (de) 1993-06-02

Family

ID=26711010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88302818A Expired - Lifetime EP0285386B1 (de) 1987-04-02 1988-03-30 Innere Zange für eine Oberantriebseinrichtung

Country Status (6)

Country Link
EP (1) EP0285386B1 (de)
KR (1) KR890002519A (de)
AU (1) AU1400188A (de)
CA (1) CA1299166C (de)
DE (1) DE3881429D1 (de)
NO (1) NO881445L (de)

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US5243081A (en) * 1991-05-16 1993-09-07 Sumitomo Chemical Company, Limited Aldol condensation dehydration catalyst, a process for preparing the same and a process for preparing an aldol condensation dehydrate using the process
WO1996018799A1 (en) * 1994-12-17 1996-06-20 Weatherford/ Lamb, Inc. Method and apparatus for connecting and disconnecting tubulars
GB2299849A (en) * 1995-04-10 1996-10-16 Mono Pumps Ltd Downhole pump drive head assembly with hydrodynamic retarder
WO1998011322A1 (en) * 1996-09-13 1998-03-19 Hitec Asa A device for connecting casings
US5839330A (en) * 1996-07-31 1998-11-24 Weatherford/Lamb, Inc. Mechanism for connecting and disconnecting tubulars
WO2001071154A1 (en) * 2000-03-22 2001-09-27 Noetic Engineering Inc. Method and apparatus for handling tubular goods
US6412554B1 (en) 2000-03-14 2002-07-02 Weatherford/Lamb, Inc. Wellbore circulation system
US6527047B1 (en) 1998-08-24 2003-03-04 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US6536520B1 (en) 2000-04-17 2003-03-25 Weatherford/Lamb, Inc. Top drive casing system
WO2003060287A1 (en) * 2001-12-31 2003-07-24 Maris International Limited Pipe handling apparatus
US6598501B1 (en) 1999-01-28 2003-07-29 Weatherford/Lamb, Inc. Apparatus and a method for facilitating the connection of pipes
US6622796B1 (en) 1998-12-24 2003-09-23 Weatherford/Lamb, Inc. Apparatus and method for facilitating the connection of tubulars using a top drive
US6684737B1 (en) 1999-01-28 2004-02-03 Weatherford/Lamb, Inc. Power tong
US6705405B1 (en) 1998-08-24 2004-03-16 Weatherford/Lamb, Inc. Apparatus and method for connecting tubulars using a top drive
US6725938B1 (en) 1998-12-24 2004-04-27 Weatherford/Lamb, Inc. Apparatus and method for facilitating the connection of tubulars using a top drive
US6742596B2 (en) 2001-05-17 2004-06-01 Weatherford/Lamb, Inc. Apparatus and methods for tubular makeup interlock
US6976298B1 (en) 1998-08-24 2005-12-20 Weatherford/Lamb, Inc. Methods and apparatus for connecting tubulars using a top drive
WO2006135787A1 (en) * 2005-06-10 2006-12-21 Albert Augustus Mullins Casing and drill pipe filling and circulation apparatus
US8042626B2 (en) 2005-05-03 2011-10-25 Noetic Technologies Inc. Gripping tool
US8454066B2 (en) 2008-07-18 2013-06-04 Noetic Technologies Inc. Grip extension linkage to provide gripping tool with improved operational range, and method of use of the same
WO2013092911A3 (de) * 2011-12-21 2013-10-17 Max Streicher Gmbh & Co. Kg Aa Futterrohr und adapter zum herstellen einer mechanischen verbindung zwischen einem topdrive und einem futterrohr
US8567512B2 (en) 2003-03-05 2013-10-29 Weatherford/Lamb, Inc. Apparatus for gripping a tubular on a drilling rig
US11002086B2 (en) 2018-04-26 2021-05-11 Nabors Drilling Technologies Usa, Inc. Pipe handler

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GB9815809D0 (en) 1998-07-22 1998-09-16 Appleton Robert P Casing running tool
DE60005198T2 (de) 1999-07-29 2004-07-15 Weatherford/Lamb, Inc., Houston Vorrichtung und verfahren zum einfachen verbinden von rohren
US7028585B2 (en) 1999-11-26 2006-04-18 Weatherford/Lamb, Inc. Wrenching tong
US6814149B2 (en) 1999-11-26 2004-11-09 Weatherford/Lamb, Inc. Apparatus and method for positioning a tubular relative to a tong
US7325610B2 (en) 2000-04-17 2008-02-05 Weatherford/Lamb, Inc. Methods and apparatus for handling and drilling with tubulars or casing
USRE42877E1 (en) 2003-02-07 2011-11-01 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
US7650944B1 (en) 2003-07-11 2010-01-26 Weatherford/Lamb, Inc. Vessel for well intervention
US7707914B2 (en) 2003-10-08 2010-05-04 Weatherford/Lamb, Inc. Apparatus and methods for connecting tubulars
DE602005006198T2 (de) 2004-07-20 2009-07-09 Weatherford/Lamb, Inc., Houston Oberantrieb zur Verbindung von Futterrohren
US7694744B2 (en) 2005-01-12 2010-04-13 Weatherford/Lamb, Inc. One-position fill-up and circulating tool and method
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US7882902B2 (en) 2006-11-17 2011-02-08 Weatherford/Lamb, Inc. Top drive interlock
US7775572B2 (en) 2007-12-10 2010-08-17 Noetic Technologies Inc. Gripping tool with fluid grip activation

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US5243081A (en) * 1991-05-16 1993-09-07 Sumitomo Chemical Company, Limited Aldol condensation dehydration catalyst, a process for preparing the same and a process for preparing an aldol condensation dehydrate using the process
WO1996018799A1 (en) * 1994-12-17 1996-06-20 Weatherford/ Lamb, Inc. Method and apparatus for connecting and disconnecting tubulars
GB2299849A (en) * 1995-04-10 1996-10-16 Mono Pumps Ltd Downhole pump drive head assembly with hydrodynamic retarder
AU697613B2 (en) * 1995-04-10 1998-10-15 Mono Pumps Limited Downhole pump drive head assembly
US5839330A (en) * 1996-07-31 1998-11-24 Weatherford/Lamb, Inc. Mechanism for connecting and disconnecting tubulars
CN1074500C (zh) * 1996-09-13 2001-11-07 海特克公司 用于连接套管的装置
WO1998011322A1 (en) * 1996-09-13 1998-03-19 Hitec Asa A device for connecting casings
GB2332009A (en) * 1996-09-13 1999-06-09 Hitec Asa A device for connecting casings
GB2332009B (en) * 1996-09-13 2000-11-01 Hitec Asa A device for interconnecting pipes
US6161617A (en) * 1996-09-13 2000-12-19 Hitec Asa Device for connecting casings
US6976298B1 (en) 1998-08-24 2005-12-20 Weatherford/Lamb, Inc. Methods and apparatus for connecting tubulars using a top drive
US6705405B1 (en) 1998-08-24 2004-03-16 Weatherford/Lamb, Inc. Apparatus and method for connecting tubulars using a top drive
US6527047B1 (en) 1998-08-24 2003-03-04 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US6688398B2 (en) 1998-08-24 2004-02-10 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US7021374B2 (en) 1998-08-24 2006-04-04 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US6622796B1 (en) 1998-12-24 2003-09-23 Weatherford/Lamb, Inc. Apparatus and method for facilitating the connection of tubulars using a top drive
US6725938B1 (en) 1998-12-24 2004-04-27 Weatherford/Lamb, Inc. Apparatus and method for facilitating the connection of tubulars using a top drive
US6598501B1 (en) 1999-01-28 2003-07-29 Weatherford/Lamb, Inc. Apparatus and a method for facilitating the connection of pipes
US6684737B1 (en) 1999-01-28 2004-02-03 Weatherford/Lamb, Inc. Power tong
US6668684B2 (en) 2000-03-14 2003-12-30 Weatherford/Lamb, Inc. Tong for wellbore operations
US6412554B1 (en) 2000-03-14 2002-07-02 Weatherford/Lamb, Inc. Wellbore circulation system
WO2001071154A1 (en) * 2000-03-22 2001-09-27 Noetic Engineering Inc. Method and apparatus for handling tubular goods
US6732822B2 (en) 2000-03-22 2004-05-11 Noetic Engineering Inc. Method and apparatus for handling tubular goods
US6536520B1 (en) 2000-04-17 2003-03-25 Weatherford/Lamb, Inc. Top drive casing system
US6742596B2 (en) 2001-05-17 2004-06-01 Weatherford/Lamb, Inc. Apparatus and methods for tubular makeup interlock
US8517090B2 (en) 2001-05-17 2013-08-27 Weatherford/Lamb, Inc. Apparatus and methods for tubular makeup interlock
WO2003060287A1 (en) * 2001-12-31 2003-07-24 Maris International Limited Pipe handling apparatus
US8567512B2 (en) 2003-03-05 2013-10-29 Weatherford/Lamb, Inc. Apparatus for gripping a tubular on a drilling rig
US10138690B2 (en) 2003-03-05 2018-11-27 Weatherford Technology Holdings, Llc Apparatus for gripping a tubular on a drilling rig
US8042626B2 (en) 2005-05-03 2011-10-25 Noetic Technologies Inc. Gripping tool
WO2006135787A1 (en) * 2005-06-10 2006-12-21 Albert Augustus Mullins Casing and drill pipe filling and circulation apparatus
US7665515B2 (en) 2005-06-10 2010-02-23 Albert Augustus Mullins Casing and drill pipe filling and circulating method
US8454066B2 (en) 2008-07-18 2013-06-04 Noetic Technologies Inc. Grip extension linkage to provide gripping tool with improved operational range, and method of use of the same
WO2013092911A3 (de) * 2011-12-21 2013-10-17 Max Streicher Gmbh & Co. Kg Aa Futterrohr und adapter zum herstellen einer mechanischen verbindung zwischen einem topdrive und einem futterrohr
US11002086B2 (en) 2018-04-26 2021-05-11 Nabors Drilling Technologies Usa, Inc. Pipe handler

Also Published As

Publication number Publication date
AU1400188A (en) 1988-10-06
EP0285386A3 (en) 1989-03-29
KR890002519A (ko) 1989-04-10
EP0285386B1 (de) 1993-06-02
NO881445L (no) 1988-10-03
NO881445D0 (no) 1988-03-30
DE3881429D1 (de) 1993-07-08
CA1299166C (en) 1992-04-21

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