US3662842A - Automatic coupling system - Google Patents

Automatic coupling system Download PDF

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Publication number
US3662842A
US3662842A US28344A US3662842DA US3662842A US 3662842 A US3662842 A US 3662842A US 28344 A US28344 A US 28344A US 3662842D A US3662842D A US 3662842DA US 3662842 A US3662842 A US 3662842A
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US
United States
Prior art keywords
quill
threaded member
automatic coupling
terminating
rotating
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 - Lifetime
Application number
US28344A
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English (en)
Inventor
Raymond J Bromell
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.)
National Oilwell Varco LP
Automatic Drilling Machines Inc
Original Assignee
Automatic Drilling Machines Inc
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
Application filed by Automatic Drilling Machines Inc filed Critical Automatic Drilling Machines Inc
Application granted granted Critical
Publication of US3662842A publication Critical patent/US3662842A/en
Assigned to ARMCO INC., A CORP OF OH reassignment ARMCO INC., A CORP OF OH ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NATIONAL ADVANCED DRILLING MACHINES, INC., A CORP OF OH.
Assigned to NATIONAL OILWELL, A GENERAL PARTNERSHIP OF DE reassignment NATIONAL OILWELL, A GENERAL PARTNERSHIP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NATIONAL SUPPLY COMPANY, INC., A CORP. OF DE
Assigned to NATIONAL SUPPLY COMPANY, INC., A CORP. OF DE reassignment NATIONAL SUPPLY COMPANY, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ARMCO INC
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
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53687—Means to assemble or disassemble by rotation of work part

Definitions

  • the drill head is connected to a drill bit through a string of drill pipe.
  • the drill head rotates the drill string and the drillbit and thereby forms a borehole.
  • new sections of drill pipe are added to the drill string. This is accomplished by disconnecting the drill head from the drill string, operating the hydraulic cylinders to raise the drill head to the top of the tower, connecting a new section of pipe to the drill head, and then connecting the new section to the drill string.
  • This invention relates to a method and apparatus whereby the drill head of an automatic drilling machine is attached to a section of drill pipe in a rapid and efficient manner.
  • the use of the invention permits the automaticconnection of the drill head to a section of drill pipe without danger of jamming or mutilating the threads of either the pipe or the quill, and without the necessity of accurately positioning the pipe.
  • the use of the invention eliminates the application of excessive torque loads to the threaded connection between the quill and the pipe, and thereby facilitates the subsequent removal of the quill from the pipe.
  • an automatic coupling system includes a threaded member that is simultaneously advanced and rotated. The advance of the threaded member continues until the threaded member contacts another threaded member. Rotation continues until a threaded connection is formed.
  • the threaded member is spring biased and is rotated until a predetermined torquev is applied between the threaded members.
  • FIG. 1 is an illustration of an automatic drilling machine including an automatic coupling system employing the present invention
  • FIG. 2 is an enlarged sectional view illustrating the automatic coupling system of the automatic drilling machine shown in FIG. 1, and
  • FIGS. 3, 4 and 5 are illustrations of various steps in the operation of the automatic coupling system.
  • the automatic drilling machine 10 includes a platform 14 having a tower or mast 16 mounted on it.
  • the tower 16 extends upwardly from the platform 14 and supports a plurality of hydraulic cylinders 18.
  • the tower 16 also supports a drill head 20 which is mounted for reciprocation in the tower 16 upon operation of the hydraulic cylinders 18.
  • the drill head 20 is connected to a drill string 22 which extends to a drill bit (not shown).
  • the drill head 20 rotates the drill string and the drill bit and thereby forms a borehole.
  • the drill head 20 moves downwardly relative to the tower 16 of the automatic drilling machine 10.
  • the drill head 20 When the drill head 20 reaches the position shown in FIG. 1, it is disconnected from the drill string 22 and is raised relative to the tower 16 by the hydraulic cylinders 18. When the drill head 20 is at the top of the tower 16, a new section of drill pipe is positioned under the drill head 20 and the automatic coupling mechanism 12 of the present invention couples the drill head 20 to the new section of drill pipe. The new section of pipe is then connected to the drill string 22, and the drill head 20 is again operated to rotate the drill string 22 and the drill bit.
  • the system 12 includes an outer sleeve 24 which is coupled to a drive tube 26 that extends downwardly from the drill head 20.
  • An inner sleeve 28 is secured to the outer sleeve 24 by a plurality of screws 30, and a retaining collar 32 is threadably engaged with the distal end of the outer sleeve 24.
  • a compression spring 34 is mounted between the inner sleeve 28 and the outer sleeve 24.
  • the automatic coupling system 12 comprises a quill 36 having a threaded distal end 38.
  • the quill 36 is mounted for sliding movement axially of the outer sleeve 24, but is prevented from rotational movement relative to the outer sleeve 24 by a spline connection 40.
  • a packing nut 42 is secured between the quill 36 and the inner sleeve 28 by a retaining ring 44.
  • the compression spring 34 extends into engagement with the retaining ring 44 and normally urges the threaded quill 36 into engagement with the retaining collar 32.
  • the automatic coupling system 12 further includes a quill advance terminating subsystem 46.
  • the subsystem 46 includes a switch actuating plate 48 which is secured to the quill 36 by the cooperation of an annular projection 50 on the quill 36, a retaining ring 52 and a plurality of screws 54.
  • a slider 56 is mounted adjacent the switch actuating plate 48 and includes a plate engaging roller 58.
  • the slider 56 is mounted in a guide 60 that extends from the drill head 20 and is urged toward the position shown in FIG. 2 by a tension spring 62 connected between a tab 64 on the guide 60 and a tab 66 on the slider 56.
  • a limit switch 68 is mounted on the drill head 20 for actuation by the slider 56 upon relative movement between the quill 36 and the drill head 20.
  • FIGS. 2, 3, 4 and 5 The operation of automatic coupling system 12 is illustrated in FIGS. 2, 3, 4 and 5.
  • a new section of drill pipe 70 is mounted beneath the drill head 20 of the automatic drilling machine 10 and is secured with respect thereto by a suitable chuck (not shown).
  • the hydraulic cylinders 18 are operated to advance the automatic coupling system 12 toward the new section of pipe 70 and a motor and transmission assembly 72 is simultaneously actuated to rotate the quill 36 of the system 12 relative to the new section of pipe.
  • the motor and transmission assembly 72 is mounted on the drill head 20 and is coupled directly to the drive tube 26 thereof.
  • the assembly 72 includes hydraulic motors that are driven by hydraulic fluid supplied by v a pump 74 which is in turn driven by an engine 76.
  • the pump 74 and the engine 76 are mounted on a platform (not shown) positioned adjacent the drilling machine 10 and are connected to the motor and transmission assembly 72 by hydraulic piping.
  • Hydraulic fluid for the hydraulic cylinder 18 of the automatic drilling machine 10 is supplied through a solenoid operated valve 78 by a pump 80 that is driven by an engine 82.
  • the quill 36 of the automatic coupling system 12 is advanced toward the new section of pipe 70 and is simultaneously rotated with respect thereto until the threaded end 38 of the quill 36 engages the new section of pipe.
  • Interengagement of the quill 36 and the new section of pipe 70 prevents further advance of the quill 36, but does not prevent further advance of the drill head 20 and the outer sleeve 24 connected thereto. Therefore, upon engagement with the new section of pipe, the quill 36 moves relative to the drill head 20 against the action of the spring 34.
  • the plate 48 engages the roller 58 of the slider 56 and thereafter moves the slider 56 upwardly in the guide 60 against the action of the spring 62. This action continues until the slider 56 engages the switch 68.
  • Actuation of the switch 68 operates the valve 78 to terminate operation of the hydraulic cylinders 18.
  • actuation of the switch 68 interrupts the advance of the drill head 20 and thereby terminates movement of the quill 36 relative to the drill head 20.
  • Actuation of the switch 68 does not terminate the rotation of the quill 36 under the action of the motor and transmission assembly 72. Rather, the rotation of the quill 36 is continued so that the threaded end 38 of the quill threadably engages the new section of pipe 70 under the combined actions of the motor and transmission assembly 72, which rotates the quill 36, and the spring 34, which urges the quill 36 toward the new section of pipe 70. Rotation of the quill 36 continues until a threaded connection is formed between the quill 36 and the new section of pipe 70 as determined by a torque monitor 84.
  • the monitor 84 comprises a pressure sensitive switch that monitors the pressure in the line between the pump 74 and the hydraulic motors of the motor and transmission assembly 72 and that terminates the flow of hydraulic fluid to the motors when the load on the motors reaches a predetermined limit.
  • the chucks that were engaged with the new section are released.
  • the new section is connected to the drill string and the drill head is employed to rotate the drill string and drill bit. This action increases the depth of the borehole and is continued until the depth has increased about 30 feet whereupon the quill 36 is unthreaded from the drill string, and a new section of pipe is connected between the drill string and the drill head.
  • the automatic coupling system 12 of the automatic drilling machine 10 also plays an important role in the unthreading of the quill 36. Because of the spline connection 40 between the quill 36 and the drill head 20, it is not necessary to correlate the rotary and linear movement of the quill with the lead of the threaded connection. Rather, the quill 36 is simply rotated at high speed relative to the drill string. As the quill unthreads, it moves upwardly relative to the drill head against the action of the spring 34.
  • an automatic coupling system employing the present invention in an automatic drilling machine results in several advantages over the prior art.
  • the use of the present invention eliminates the necessity of correlating the advance and the rotation of the quill with the lead of the threaded connection. Instead, the advance and the rotation of the quill are completely independent and can be carried out at any desired speed. Usually, the quill is advanced much more rapidly than would otherwise be the case, and a threaded connection between the quill and a section of pipe is therefore formed much more quickly.
  • the present invention when the present invention is utilized, the application of excessive torque loads between the quill and a section of pipe is prevented. This eliminates jamming and mutilation of threads. Also, the subsequent unthreading of the quill is facilitated when the initial torque on the threaded connection between the quill and a pipe section is held to a controlled limit.
  • the automatic coupling system shown in the drawings facilitates the disconnection of the quill of an automatic drilling machine in that it eliminates the necessity of correlating the rotary and linear motions of the quill with the lead of the threaded connection during the unthreading of the quill.
  • the use of the present invention increases the speed of both the coupling and the uncoupling of the quill.
  • An automatic coupling apparatus comprising:
  • the automatic coupling apparatus according to claim 1 wherein the terminating means comprises:
  • terminating means includes means responsive to movement of the threaded member toward the retracted position against the action of the biasing means for terminating the advance of the threaded member.
  • the automatic coupling apparatus according to claim 1 further including means for terminating the rotation of the threaded member upon threaded interengagement between the threaded member and another threaded member.
  • An automatic coupling apparatus comprising:
  • the automatic coupling apparatus according to claim 8 further including means for terminating the rotation of the quill after the threaded connection is formed.
  • the automatic coupling apparatus further characterized by a spline coupling between the quill and the rotating means for permitting relative sliding motion therebetween while preventing relative rotation.
  • the automatic coupling apparatus according to claim 12 further including means for terminating the movement of the drill head toward the drill pipe in response to sliding movement of the quill relative to the drill head.
  • the automatic coupling apparatus according to claim 13 wherein the movement terminating means includes switch means mounted for actuation upon relative movement between the quill and the drill head.
  • a method of automatically coupling a threaded quill to a drill pipe comprising:
  • actuating sensing means to terminate the rotation of the quill relative to the drill pipe when the torque on the quill exceeds a predetermined level.
  • the terminating step includes the step of sensing relative movement betweenthe quill and the rotating mechanism upon engagement of the quill with the drill pipe.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
US28344A 1970-04-14 1970-04-14 Automatic coupling system Expired - Lifetime US3662842A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2834470A 1970-04-14 1970-04-14

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US3662842A true US3662842A (en) 1972-05-16

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Cited By (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696495A (en) * 1971-04-05 1972-10-10 Us Navy Threaded ring turning device
US3766632A (en) * 1971-05-18 1973-10-23 Kieserling & Albrecht Method and apparatus for connecting sleeves with tapered internal threads to pipes with tapered external threads
EP0087917A1 (en) * 1982-02-24 1983-09-07 Dualco Manufacturing Ltd. Drilling apparatus
US4458764A (en) * 1981-06-01 1984-07-10 Craelius Ab Device in rock or earth drilling apparatus for rotary drilling
EP0194956A2 (en) * 1985-03-11 1986-09-17 Varco International, Inc. Stand jumping and stabbing guide device and method
US4781359A (en) * 1987-09-23 1988-11-01 National-Oilwell Sub assembly for a swivel
US4815546A (en) * 1987-04-02 1989-03-28 W-N Apache Corporation Top head drive assembly with axially movable quill
US5255751A (en) * 1991-11-07 1993-10-26 Huey Stogner Oilfield make-up and breakout tool for top drive drilling systems
US20040144547A1 (en) * 2000-04-17 2004-07-29 Thomas Koithan Methods and apparatus for applying torque and rotation to connections
US20050257933A1 (en) * 2004-05-20 2005-11-24 Bernd-Georg Pietras Casing running head
US20060000600A1 (en) * 1998-08-24 2006-01-05 Bernd-Georg Pietras Casing feeder
US20060124357A1 (en) * 2002-07-29 2006-06-15 Weatherford/Lamb, Inc. Adjustable rotating guides for spider or elevator
US7073598B2 (en) 2001-05-17 2006-07-11 Weatherford/Lamb, Inc. Apparatus and methods for tubular makeup interlock
US7083005B2 (en) 2002-12-13 2006-08-01 Weatherford/Lamb, Inc. Apparatus and method of drilling with casing
US7090021B2 (en) 1998-08-24 2006-08-15 Bernd-Georg Pietras Apparatus for connecting tublars using a top drive
US7090023B2 (en) 2002-10-11 2006-08-15 Weatherford/Lamb, Inc. Apparatus and methods for drilling with casing
US20060180315A1 (en) * 2005-01-18 2006-08-17 David Shahin Top drive torque booster
US7093675B2 (en) 2000-08-01 2006-08-22 Weatherford/Lamb, Inc. Drilling method
US7100710B2 (en) 1994-10-14 2006-09-05 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7108084B2 (en) 1994-10-14 2006-09-19 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7128154B2 (en) 2003-01-30 2006-10-31 Weatherford/Lamb, Inc. Single-direction cementing plug
US7131505B2 (en) 2002-12-30 2006-11-07 Weatherford/Lamb, Inc. Drilling with concentric strings of casing
US7137454B2 (en) 1998-07-22 2006-11-21 Weatherford/Lamb, Inc. Apparatus for facilitating the connection of tubulars using a top drive
US7140445B2 (en) 1997-09-02 2006-11-28 Weatherford/Lamb, Inc. Method and apparatus for drilling with casing
US7147068B2 (en) 1994-10-14 2006-12-12 Weatherford / Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7165634B2 (en) 1994-10-14 2007-01-23 Weatherford/Lamb, Inc. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US20070107912A1 (en) * 2001-05-17 2007-05-17 Doyle Boutwell System and method for deflection compensation in power drive system for connection of tubulars
US7219744B2 (en) 1998-08-24 2007-05-22 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US20080047749A1 (en) * 2002-11-27 2008-02-28 Thomas Koithan Methods and apparatus for applying torque and rotation to connections
US7513300B2 (en) 1998-08-24 2009-04-07 Weatherford/Lamb, Inc. Casing running and drilling system
US20090151934A1 (en) * 2007-12-12 2009-06-18 Karsten Heidecke Top drive system
US7650944B1 (en) 2003-07-11 2010-01-26 Weatherford/Lamb, Inc. Vessel for well intervention
US7654325B2 (en) 2000-04-17 2010-02-02 Weatherford/Lamb, Inc. Methods and apparatus for handling and drilling with tubulars or casing
US7694744B2 (en) 2005-01-12 2010-04-13 Weatherford/Lamb, Inc. One-position fill-up and circulating tool and method
US7712523B2 (en) * 2000-04-17 2010-05-11 Weatherford/Lamb, Inc. Top drive casing system
US7757759B2 (en) 2006-04-27 2010-07-20 Weatherford/Lamb, Inc. Torque sub for use with top drive
US7874352B2 (en) 2003-03-05 2011-01-25 Weatherford/Lamb, Inc. Apparatus for gripping a tubular on a drilling rig
US7882902B2 (en) 2006-11-17 2011-02-08 Weatherford/Lamb, Inc. Top drive interlock
CN102146775A (zh) * 2011-01-28 2011-08-10 胜利油田泰峰机电有限责任公司 油井作业自动化操作系统
USRE42877E1 (en) 2003-02-07 2011-11-01 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
US10167671B2 (en) 2016-01-22 2019-01-01 Weatherford Technology Holdings, Llc Power supply for a top drive
US10247246B2 (en) 2017-03-13 2019-04-02 Weatherford Technology Holdings, Llc Tool coupler with threaded connection for top drive
US10309166B2 (en) 2015-09-08 2019-06-04 Weatherford Technology Holdings, Llc Genset for top drive unit
US10323484B2 (en) 2015-09-04 2019-06-18 Weatherford Technology Holdings, Llc Combined multi-coupler for a top drive and a method for using the same for constructing a wellbore
US10355403B2 (en) 2017-07-21 2019-07-16 Weatherford Technology Holdings, Llc Tool coupler for use with a top drive
US10428602B2 (en) 2015-08-20 2019-10-01 Weatherford Technology Holdings, Llc Top drive torque measurement device
US10443326B2 (en) 2017-03-09 2019-10-15 Weatherford Technology Holdings, Llc Combined multi-coupler
US10465457B2 (en) 2015-08-11 2019-11-05 Weatherford Technology Holdings, Llc Tool detection and alignment for tool installation
US10480247B2 (en) 2017-03-02 2019-11-19 Weatherford Technology Holdings, Llc Combined multi-coupler with rotating fixations for top drive
US10527104B2 (en) 2017-07-21 2020-01-07 Weatherford Technology Holdings, Llc Combined multi-coupler for top drive
US10526852B2 (en) 2017-06-19 2020-01-07 Weatherford Technology Holdings, Llc Combined multi-coupler with locking clamp connection for top drive
US10544631B2 (en) 2017-06-19 2020-01-28 Weatherford Technology Holdings, Llc Combined multi-coupler for top drive
US10590744B2 (en) 2015-09-10 2020-03-17 Weatherford Technology Holdings, Llc Modular connection system for top drive
US10626683B2 (en) 2015-08-11 2020-04-21 Weatherford Technology Holdings, Llc Tool identification
US10704364B2 (en) 2017-02-27 2020-07-07 Weatherford Technology Holdings, Llc Coupler with threaded connection for pipe handler
US10711574B2 (en) 2017-05-26 2020-07-14 Weatherford Technology Holdings, Llc Interchangeable swivel combined multicoupler
US10745978B2 (en) 2017-08-07 2020-08-18 Weatherford Technology Holdings, Llc Downhole tool coupling system
US10954753B2 (en) 2017-02-28 2021-03-23 Weatherford Technology Holdings, Llc Tool coupler with rotating coupling method for top drive
US11047175B2 (en) 2017-09-29 2021-06-29 Weatherford Technology Holdings, Llc Combined multi-coupler with rotating locking method for top drive
US11131151B2 (en) 2017-03-02 2021-09-28 Weatherford Technology Holdings, Llc Tool coupler with sliding coupling members for top drive
US11162309B2 (en) 2016-01-25 2021-11-02 Weatherford Technology Holdings, Llc Compensated top drive unit and elevator links
USD935491S1 (en) * 2020-01-10 2021-11-09 William Thomas Phillips, Inc. Nubbin having a guide for a gripping tool
US11401758B2 (en) 2020-01-10 2022-08-02 William Thomas Phillips, Inc. System and apparatus comprising a guide for a gripping tool and method of using same
US11441412B2 (en) 2017-10-11 2022-09-13 Weatherford Technology Holdings, Llc Tool coupler with data and signal transfer methods for top drive
US11753882B2 (en) 2020-01-10 2023-09-12 William Thomas Phillips, Inc. System and apparatus comprising a guide for a gripping tool

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Cited By (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696495A (en) * 1971-04-05 1972-10-10 Us Navy Threaded ring turning device
US3766632A (en) * 1971-05-18 1973-10-23 Kieserling & Albrecht Method and apparatus for connecting sleeves with tapered internal threads to pipes with tapered external threads
US4458764A (en) * 1981-06-01 1984-07-10 Craelius Ab Device in rock or earth drilling apparatus for rotary drilling
EP0087917A1 (en) * 1982-02-24 1983-09-07 Dualco Manufacturing Ltd. Drilling apparatus
EP0194956A2 (en) * 1985-03-11 1986-09-17 Varco International, Inc. Stand jumping and stabbing guide device and method
EP0194956A3 (en) * 1985-03-11 1988-01-27 Varco International, Inc. Stand jumping and stabbing guide device and method
US4815546A (en) * 1987-04-02 1989-03-28 W-N Apache Corporation Top head drive assembly with axially movable quill
US4781359A (en) * 1987-09-23 1988-11-01 National-Oilwell Sub assembly for a swivel
US5255751A (en) * 1991-11-07 1993-10-26 Huey Stogner Oilfield make-up and breakout tool for top drive drilling systems
US7100710B2 (en) 1994-10-14 2006-09-05 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7147068B2 (en) 1994-10-14 2006-12-12 Weatherford / Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7165634B2 (en) 1994-10-14 2007-01-23 Weatherford/Lamb, Inc. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7108084B2 (en) 1994-10-14 2006-09-19 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7140445B2 (en) 1997-09-02 2006-11-28 Weatherford/Lamb, Inc. Method and apparatus for drilling with casing
US7665531B2 (en) 1998-07-22 2010-02-23 Weatherford/Lamb, Inc. Apparatus for facilitating the connection of tubulars using a top drive
US20070074876A1 (en) * 1998-07-22 2007-04-05 Bernd-Georg Pietras Apparatus for facilitating the connection of tubulars using a top drive
US7137454B2 (en) 1998-07-22 2006-11-21 Weatherford/Lamb, Inc. Apparatus for facilitating the connection of tubulars using a top drive
US7353880B2 (en) 1998-08-24 2008-04-08 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US7090021B2 (en) 1998-08-24 2006-08-15 Bernd-Georg Pietras Apparatus for connecting tublars using a top drive
US7219744B2 (en) 1998-08-24 2007-05-22 Weatherford/Lamb, Inc. Method and apparatus for connecting tubulars using a top drive
US20070051519A1 (en) * 1998-08-24 2007-03-08 Bernd-Georg Pietras apparatus for connecting tubulars using a top drive
US7451826B2 (en) 1998-08-24 2008-11-18 Weatherford/Lamb, Inc. Apparatus for connecting tubulars using a top drive
US7513300B2 (en) 1998-08-24 2009-04-07 Weatherford/Lamb, Inc. Casing running and drilling system
US20060000600A1 (en) * 1998-08-24 2006-01-05 Bernd-Georg Pietras Casing feeder
US7669662B2 (en) 1998-08-24 2010-03-02 Weatherford/Lamb, Inc. Casing feeder
US8230933B2 (en) 2000-04-17 2012-07-31 Weatherford/Lamb, Inc. Top drive casing system
US7654325B2 (en) 2000-04-17 2010-02-02 Weatherford/Lamb, Inc. Methods and apparatus for handling and drilling with tubulars or casing
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