US20070240908A1 - Top drive assembly - Google Patents

Top drive assembly Download PDF

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Publication number
US20070240908A1
US20070240908A1 US11/766,004 US76600407A US2007240908A1 US 20070240908 A1 US20070240908 A1 US 20070240908A1 US 76600407 A US76600407 A US 76600407A US 2007240908 A1 US2007240908 A1 US 2007240908A1
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US
United States
Prior art keywords
swivel
drive
drive assembly
quill
housing
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.)
Abandoned
Application number
US11/766,004
Inventor
Matthew Brown
William Carr
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.)
Tesco Corp Canada
Original Assignee
Tesco Corp Canada
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 to US10/983,668 priority Critical patent/US7270189B2/en
Application filed by Tesco Corp Canada filed Critical Tesco Corp Canada
Priority to US11/766,004 priority patent/US20070240908A1/en
Assigned to TESCO CORPORATION reassignment TESCO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BROWN, MATTHEW, CARR, WILLIAM G.
Publication of US20070240908A1 publication Critical patent/US20070240908A1/en
Abandoned legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00Rotary drilling
    • E21B3/02Surface drives for rotary drilling

Abstract

A top drive assembly for wellsite operations may include a quill, a swivel including a swivel housing and a swivel bearing therein in which the quill is supported, a drive system for applying torque to the quill, and link arm hangers extending from the swivel housing and formed to accept and retain link arms.

Description

    FIELD
  • The present invention is directed to a top drive assembly and a swivel therefor.
  • BACKGROUND
  • A top drive assembly is used in oilfield operations for manipulating a wellbore string such as a drill string or a casing or liner string. The top drive assembly is supported in a rig such as a mast or derrick for supporting and axially and rotationally driving the wellbore string.
  • Referring to FIG. 1, an example of a prior art top drive assembly is shown. The top drive assembly 10 may be supported from a hook in a rig (not shown) by use of a hoisting apparatus 12 such as a bail, links, blocks, etc., and may be stabilized by connection to a torque track 14. A top drive assembly generally may include a quill 16 that extends from the top drive assembly downwardly for connection directly, or indirectly as through a clamp 18 etc., to the wellbore string 20, a swivel 22 including a swivel bearing for rotationally supporting the quill, a torque and drive system 24 that may include, for example, a gear box 26 and motor 28 for applying torque to the quill, and link arms 30 with elevators 34 connected via link hangers 31 on a collar 32 and load nut 33 to the quill for supporting the weight of the wellbore string when the wellbore string is supported by the top drive assembly through elevators 34 but not connected to the quill.
  • In a typical configuration, as shown, swivel 22 is positioned adjacent the upper end of the top drive assembly with bail 12 connected to the swivel housing. Quill 16 is supported in the swivel and extends down through drive system 24 to extend out at the bottom of assembly 10. A typical top drive assembly may accommodate a space of about 20 ft (6 m) or more above from the top of the bail to the top of the link arm elevators.
  • In operations employing a top drive assembly; a load path is therefore set up from the wellbore string through the quill to the swivel and then to the bail through which the load is conveyed to the rig hoisting equipment. When the wellbore string is supported on the elevators, the load path extends through elevators 34 and link arms 30 to the load collar and the load nut and then up through the quill to swivel 22 and bail 12. A typical top drive assembly, therefore, effectively forms a single load path from top to bottom, which is through the quill.
  • Although the top drive assembly is an integral part of modern wellsite operations, the typical top drive configuration has presented problems with size and reliance on the quill in the load path.
  • SUMMARY
  • In accordance with one aspect of the present invention, there is provided a top drive assembly for wellsite operations, the top drive assembly comprising: a quill; a swivel including a swivel housing and a swivel bearing therein in which the quill is supported; a drive system for applying torque to the quill; and link arm hangers extending from the swivel housing and formed to accept and retain link arms.
  • A top drive assembly comprising: a quill; a swivel including a swivel housing and a swivel bearing therein for supporting the quill; and link arm hangers connected for load transfer to the swivel housing, the top drive assembly defining a first load path through the quill and the swivel and a second load path directly from the link hangers to the swivel.
  • A top drive assembly swivel comprising: a swivel housing and a swivel bearing therein, the swivel housing including a connector for accepting connection to a bail and link hangers extending therefrom.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention may be better understood by reference to the drawings of prior art and possible embodiments, wherein:
  • FIG. 1 is a side elevation of a prior art top drive assembly;
  • FIG. 2 is a side elevation of one embodiment of a top drive assembly according to the present invention;
  • FIG. 3 is a front elevation of the top drive assembly of FIG. 2 with a portion of the swivel shown in section.
  • FIG. 4 is a side elevation of another embodiment of a top drive assembly; and
  • FIG. 5 is a section of the swivel and quill of FIG. 4 along lines V-V of FIG. 4.
  • DESCRIPTION OF VARIOUS EMBODIMENTS
  • A top drive assembly 50 is described herein that may be more compact and less complex that many previous top drive assemblies. The top drive assembly described herein offers a dual load path between a rig in which the assembly is mounted and a wellbore string 20 to be handled by the top drive assembly.
  • Top drive assembly 50 may be supported from a hook in a rig (not shown) by use of a hoisting apparatus such as links 52, a bail, etc. and may be stabilized by a bracket (not shown) for connection to a torque track.
  • Top drive assembly 50 includes a quill 56, a swivel 72 and link hangers 80. For operation to manipulate a wellbore string further parts such as a grabber, link arms 82 and a torque and drive system 94 may be provided and installed.
  • Quill 56 extends from the top drive assembly downwardly for connection directly or indirectly to the wellbore string 20. For example, in the illustrated embodiment, the quill has connected thereto a sub string 21, which in turn connects directly or indirectly to the wellbore string. Of course, other configurations may be possible such as, for example, including casing clamps, actuators, valves, etc. Wellbore string 20 may be one or more joints of pipe such as, for example, any of drill pipe, drill collar, casing or a wellbore liner.
  • Top drive assembly 50 further includes a swivel 72, including a housing 73 containing a swivel bearing 74 for supporting quill 56 in a manner permitting rotation therein. The swivel also provides connection directly or indirectly to links 52. For example, in the illustrated embodiment, swivel housing 73 has formed thereon devises 75 for accepting pins 76 connecting between the links and the swivel. Of course, other connection arrangements are possible between the top drive hoisting apparatus and the swivel. However, any such connection should be selected with consideration as to the load that must be accommodated therethrough.
  • Top drive assembly 50 also includes link hangers 80 for accepting and retaining link arms 82 and, therethrough, elevators 84. Link hangers 80 form support areas for the link arms. In the illustrated embodiment, the link hangers are hooked extensions over which the eyes 83 of link arms 82 may be hooked. As will be appreciated, a pair of link hangers 80 is usually employed and the link hangers are usually diametrically positioned so that the link arms hang down on either side of the top drive.
  • The swivel 72 and link hangers 80 configuration provide that the link hangers 80 extend from swivel housing 73 rather than from a connection to the quill. Link hangers 71 can be formed or mounted in various ways to extend from the swivel housing. For example, the link hangers can be formed integral with the swivel housing, as shown. Alternately, the link hangers can be connected to the swivel housing by way of welding, bolts or other fasteners, connectors, interlocking arrangements, bearings, etc. Any connection arrangement between the link hangers and the swivel housing, however, must be selected with consideration as to the load that must be accommodated therethrough.
  • During certain operations using the top drive assembly, the weight of the wellbore string will be taken up by the elevators and the link arms and during certain other operations, the weight of the wellbore string will be taken up by the quill. In the present top drive assembly, when the load is taken up by the link arms, such load is transferred through the link arms and the link hangers to the swivel housing and then to the bail. As such, the top drive assembly offers a dual load path including a first load path through quill 56 and swivel 72 into the bail and a second load path through link arms 82, link hangers 80 and swivel 72 into the bail. In this assembly, therefore, the weight can be carried by the link arms and the quill may be free for other operations, which may, for example, include rotation of the quill.
  • Top drive assembly 50, for operation, also includes a torque and drive system 94 for applying torque to the quill. In the illustrated embodiment, for example, the torque and drive system includes a gear box 96 in a concentric or eccentric configuration and any of various types of motors 98. Torque and drive system 94 may be positioned in various locations on the top drive assembly, for example above or below the swivel, to drive the quill. In the illustrated embodiment, torque and drive system 94 is positioned above swivel 72. As such, the torque and drive system is out of the way so that the quill and the link arms do not have to be formed to accommodate the system 94. In particular, this permits the quill and the link arms to be shorter than in a top drive assembly where the torque and drive system is positioned below the swivel. For example, in one embodiment a top drive assembly similar to that of FIG. 2 may accommodate a reduced space between the top of the links and the bottom of the quill, when compared to a top drive as shown in FIG. 1.
  • In addition, the torque and drive system, in its position above swivel, is out of the load path and need not, if desired, accommodate a structure in the load path passing therethrough.
  • Torque and drive system 94 may be connected permanently or detachably into the top drive assembly. For example, in the illustrated embodiment, the gearbox of the system is detachably connected to a support surface 97 on swivel 72 via a connector 99 and bolts 100. This detachable connection permits the torque and drive system to be removed from the top drive assembly for repair or replacement, for example, for selection to meet desired operational parameters. In one embodiment, the drive assembly connects to the quill via a spline or another drive interface.
  • In one embodiment, torque and drive system 94 and swivel 72 may have a separate lubricant/oil storage and supply and may each be sealed independently of the other such that they can be readily separated without consideration as to leakage or containment of oil/lubricant.
  • Referring to FIGS. 4 and 5, another top drive assembly 50 a and swivel 72 a are shown. Top drive assembly 50 a includes a quill 56 a, a swivel 72 a, link hangers 80 a, a pipe grabber assembly 85, link arms 82 and a torque and drive system 94 a.
  • As in previous embodiments, quill 56 a extends through the swivel and extends downwardly out from the swivel for connection directly or indirectly to a wellbore string. Swivel 72 a includes a housing 73 a containing a swivel bearing 74 a for supporting quill 56 a and permitting its rotation about axis xR. The swivel also provides connections 75 a for directly or indirectly securing to hoisting apparatus such as links and block 52 a.
  • Link hangers 80 a are formed from housing 73 a integral with the material of housing, as by molding or machining. As noted hereinbefore, link hangers 80 a support link arms 82. Link hangers 80 a form support areas for the link arms. In the illustrated embodiment, the link hangers are defined by pockets formed in the swivel housing to accommodate the eyes 83 of the link arms 82 and supports 86 over which the eyes may be hooked. Supports 86 define a saddle-shaped upper surface including a concave curvature over their long axis xL, which is that axis substantially radial to the rotational axis of the top drive assembly, and a convex curvature over an axis perpendicular to axis xL. Such a surface curvature forms a saddle-shaped support surface that substantially envelopes the load transfer surface of an eye 83 to enhance contact, and thereby load transfer, therebetween. Apertures 87 are formed to accept fasteners for securing a stay plate (not shown) over the pockets to maintain the eyes in the pockets.
  • Top drive assembly 50 a also includes a torque and drive system 94 a for applying torque to the quill. In the illustrated embodiment, for example, the torque and drive system includes a gear box 96 a and a motor 98 a, each of which may be selected from various configurations and types. In the illustrated embodiment, torque and drive system 94 a is positioned above swivel 72 a. Torque and drive system 94 a may be connected permanently or detachably into the top drive assembly. For example, in the illustrated embodiment, the torque and drive system 94 a is detachably connected to a support surface 97 a on swivel 72 a and the gears of the gearbox are connected to the quill by a releasable spline interface 107. Support surface 97 a includes holes 109 for retaining bolts (not shown) to connect the torque and drive system. This detachable connection permits the torque and drive system to be removed from the top drive assembly for repair or replacement. Seals 110 may be provided to contain the swivel's lubricant supply.
  • The swivel housing may be formed to accommodate other modular components. For example, in the illustrated embodiment, the swivel housing defines a back interface surface 112 including fastener holes onto which a torque track or other component may be connected. The illustrated swivel further includes a front interface surface 114 including fastener holes for retaining grabber assembly 85 or another component. Swivel 72 a may also include interface apertures 116 for permitting a pull down connection. As such, the swivel may be modular such that any of various parts, including for example, any or all of system 94 a, grabber assembly 85, a torque track or pull down apertures 116, can be selected and connected to swivel housing 73, as desired.
  • Suitable materials and construction for a top drive assembly and components would be apparent to a skilled workman.
  • While various embodiments have been described in detail, these embodiments are described to facilitate understanding and are not intended to be used to limit the invention. It is to be understood that a substitutions would be apparent to a skilled workman and such substitutions are to be encompassed by the appended claims.

Claims (26)

1. A top drive assembly for wellsite operations, the top drive assembly comprising: a quill; a swivel including a swivel housing and a swivel bearing therein in which the quill is supported; a drive system for applying torque to the quill; and link arm hangers extending from the swivel housing and formed to accept and retain link arms.
2. The top drive assembly of claim 1 wherein the link arm hangers are formed integral with the swivel housing.
3. The top drive assembly of claim 1, the drive system being positioned above the swivel.
4. The top drive assembly of claim 1 wherein the drive system is detachably connected to the swivel.
5. The top drive assembly of claim 1 further comprising a grabber assembly detachably connected to the swivel.
6. A top drive assembly comprising: a quill; a swivel including a swivel housing and a swivel bearing therein for supporting the quill; and link arm hangers connected for load transfer to the swivel housing, the top drive assembly defining a first load path through the quill and the swivel and a second load path directly from the link hangers to the swivel.
7. The top drive assembly of claim 6 further comprising a link arm connected on each link hanger and the second load path extends from link arms to the link arm hangers.
8. The top drive assembly of claim 6 wherein the drive system is operable to drive the quill with a load passing through the first load path.
9. The top drive assembly of claim 6 wherein the drive system is operable to drive the quill while a load passes through the second load path.
10. The top drive assembly of claim 6 further comprising a connection on the swivel housing to a top drive hoisting apparatus.
11. A top drive assembly for wellsite operations, the top drive assembly comprising: a quill; a swivel including a swivel housing and a swivel bearing therein in which the quill is supported; a drive system for applying torque to the quill; and a drive system support surface on the swivel housing and formed to detachably connect the drive system.
12. The top drive assembly of claim 11 wherein the swivel and the drive system each include separate lubricant supplies.
13. The top drive assembly of claim 11 wherein the swivel and the drive system each are separately sealed.
14. The top drive assembly of claim 11 wherein the quill and drive system are releasably connected by a spline interface.
15. The top drive assembly of claim 11 further comprising a front interface surface on the swivel housing for detachably connecting a grabber assembly.
16. The top drive assembly of claim 11 further comprising a rear interface surface on the swivel for detachable connection of a torque track.
17. The top drive assembly of claim 11 further comprising a pull down interface formed on the swivel housing.
18. The top drive assembly of claim 11 further comprising a pair of link hangers formed integral with the swivel housing.
19. A top drive assembly swivel comprising: a swivel housing and a swivel bearing therein, the swivel housing including a connector for accepting connection to a string hoisting apparatus and a pair of link arm hangers extending therefrom.
20. The top drive assembly swivel of claim 19 further comprising a drive system support surface positioned on top of the swivel housing.
21. The top drive assembly swivel of claim 20 wherein the drive system support surface includes bolt holes for detachably connecting the drive system.
22. The top drive assembly swivel of claim 19 further comprising a front interface surface on the swivel housing for detachably connecting a grabber assembly.
23. The top drive assembly swivel of claim 19 further comprising a rear interface surface on the swivel for detachable connection of a torque track.
24. The top drive assembly swivel of claim 19 further comprising a pull down interface formed on the swivel housing.
25. The top drive assembly swivel of claim 19 further comprising a pair of link hangers formed integral with the swivel housing.
26. The top drive assembly swivel of claim 19 further comprising a link arm hanger thereon, the link arm hanger including a saddle-shaped support surface including a convex curvature over its long axis and a convex curvature over an axis perpendicular to the long axis.
US11/766,004 2004-11-09 2007-06-20 Top drive assembly Abandoned US20070240908A1 (en)

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US10/983,668 US7270189B2 (en) 2004-11-09 2004-11-09 Top drive assembly
US11/766,004 US20070240908A1 (en) 2004-11-09 2007-06-20 Top drive assembly

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090000780A1 (en) * 2007-06-27 2009-01-01 Wells Lawrence E Top drive systems with reverse bend bails
US20110073375A1 (en) * 2005-12-20 2011-03-31 Canrig Drilling Technology Ltd. Modular top drive lubrication system and methods
US8651175B2 (en) 2011-01-14 2014-02-18 Tesco Corporation Top drive output torque measurement method
US8739888B2 (en) 2011-04-28 2014-06-03 Tesco Corporation Mechanically actuated casing drive system tool
US20140262521A1 (en) * 2013-03-15 2014-09-18 Cameron Rig Solutions, Inc. Top Drive Main Shaft with Threaded Load Nut
US9739071B2 (en) 2015-02-27 2017-08-22 Nabors Industries, Inc. Methods and apparatuses for elevating drilling rig components with a strand jack
US9890591B2 (en) 2013-07-15 2018-02-13 Nabors Drilling Technologies Usa, Inc. Top drive module connector and methods
US10323473B2 (en) 2014-12-10 2019-06-18 Nabors Industries, Inc. Modular racker system for a drilling rig

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7188686B2 (en) * 2004-06-07 2007-03-13 Varco I/P, Inc. Top drive systems
AT489531T (en) * 2005-05-09 2010-12-15 Tesco Corp Tube handling device and safety mechanism
AU2012209056B2 (en) * 2005-12-20 2014-03-13 Canrig Drilling Technology Ltd A top drive system and method of increasing drilling efficiency
GB2480396B (en) * 2007-04-13 2012-02-08 Nat Oilwell Varco Lp Tubular running tool and methods of use
US7401664B2 (en) * 2006-04-28 2008-07-22 Varco I/P Top drive systems
US7487848B2 (en) * 2006-04-28 2009-02-10 Varco I/P, Inc. Multi-seal for top drive shaft
US7882902B2 (en) 2006-11-17 2011-02-08 Weatherford/Lamb, Inc. Top drive interlock
US7748445B2 (en) * 2007-03-02 2010-07-06 National Oilwell Varco, L.P. Top drive with shaft seal isolation
US20090000825A1 (en) * 2007-06-28 2009-01-01 Clint Musemeche Power swivel incorporating removable/replaceable bearing core
AT551489T (en) 2007-12-12 2012-04-15 Weatherford Lamb TOP DRIVE SYSTEM
US20090159271A1 (en) * 2007-12-21 2009-06-25 Bastiaan De Jong Top drive systems for wellbore & drilling operations
GB2482456A (en) * 2009-05-01 2012-02-01 Baker Hughes Inc Casing bits,drilling assemblies,and methods for use in forming wellbores with expandable casing
WO2011109075A2 (en) * 2010-03-05 2011-09-09 Mcclung Guy L Iii Dual top drive systems and methods
US9010410B2 (en) 2011-11-08 2015-04-21 Max Jerald Story Top drive systems and methods
US9316071B2 (en) 2013-01-23 2016-04-19 Weatherford Technology Holdings, Llc Contingent continuous circulation drilling system
US9982490B2 (en) 2013-03-01 2018-05-29 Baker Hughes Incorporated Methods of attaching cutting elements to casing bits and related structures
US10487596B2 (en) 2015-03-26 2019-11-26 Premier Coil Solutions, Inc. Coiled tubing swivel assembly
US10465457B2 (en) 2015-08-11 2019-11-05 Weatherford Technology Holdings, Llc Tool detection and alignment for tool installation
US10626683B2 (en) 2015-08-11 2020-04-21 Weatherford Technology Holdings, Llc Tool identification
WO2017031441A1 (en) 2015-08-20 2017-02-23 Weatherford Technology Holdings, Llc Top drive torque measurement device
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
WO2017044482A1 (en) 2015-09-08 2017-03-16 Weatherford Technology Holdings, Llc Genset for top drive unit
US10590744B2 (en) 2015-09-10 2020-03-17 Weatherford Technology Holdings, Llc Modular connection system for top drive
US10167671B2 (en) 2016-01-22 2019-01-01 Weatherford Technology Holdings, Llc Power supply for a top drive
US10704364B2 (en) 2017-02-27 2020-07-07 Weatherford Technology Holdings, Llc Coupler with threaded connection for pipe handler
US10954753B2 (en) 2017-02-28 2021-03-23 Weatherford Technology Holdings, Llc Tool coupler with rotating coupling method for top drive
US10480247B2 (en) 2017-03-02 2019-11-19 Weatherford Technology Holdings, Llc Combined multi-coupler with rotating fixations for top drive
US10443326B2 (en) 2017-03-09 2019-10-15 Weatherford Technology Holdings, Llc Combined multi-coupler
US10247246B2 (en) 2017-03-13 2019-04-02 Weatherford Technology Holdings, Llc Tool coupler with threaded connection for top drive
US10711574B2 (en) 2017-05-26 2020-07-14 Weatherford Technology Holdings, Llc Interchangeable swivel combined multicoupler
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
US10527104B2 (en) 2017-07-21 2020-01-07 Weatherford Technology Holdings, Llc Combined multi-coupler for top drive
US10355403B2 (en) 2017-07-21 2019-07-16 Weatherford Technology Holdings, Llc Tool coupler for use with a top drive
US10745978B2 (en) 2017-08-07 2020-08-18 Weatherford Technology Holdings, Llc Downhole tool coupling system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635105A (en) * 1967-10-17 1972-01-18 Byron Jackson Inc Power tong head and assembly
US6679333B2 (en) * 2001-10-26 2004-01-20 Canrig Drilling Technology, Ltd. Top drive well casing system and method
US6913096B1 (en) * 2002-07-03 2005-07-05 Shawn James Nielsen Top drive well drilling apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4449596A (en) * 1982-08-03 1984-05-22 Varco International, Inc. Drilling of wells with top drive unit
NO154578C (en) * 1984-01-25 1986-10-29 Maritime Hydraulics As Bridge drilling rig.
US4605077A (en) * 1984-12-04 1986-08-12 Varco International, Inc. Top drive drilling systems
US4793422A (en) * 1988-03-16 1988-12-27 Hughes Tool Company - Usa Articulated elevator links for top drive drill rig
GB2345074A (en) * 1998-12-24 2000-06-28 Weatherford Lamb Floating joint to facilitate the connection of tubulars using a top drive
GB2347441B (en) * 1998-12-24 2003-03-05 Weatherford Lamb Apparatus and method for facilitating the connection of tubulars using a top drive
US6637526B2 (en) * 1999-03-05 2003-10-28 Varco I/P, Inc. Offset elevator for a pipe running tool and a method of using a pipe running tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635105A (en) * 1967-10-17 1972-01-18 Byron Jackson Inc Power tong head and assembly
US6679333B2 (en) * 2001-10-26 2004-01-20 Canrig Drilling Technology, Ltd. Top drive well casing system and method
US6913096B1 (en) * 2002-07-03 2005-07-05 Shawn James Nielsen Top drive well drilling apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8839884B2 (en) 2005-12-20 2014-09-23 Canrig Drilling Technology Ltd. Direct modular top drive with pipe handler module and methods
US20110073375A1 (en) * 2005-12-20 2011-03-31 Canrig Drilling Technology Ltd. Modular top drive lubrication system and methods
US8151909B2 (en) 2005-12-20 2012-04-10 Canrig Drilling Technology Ltd. Modular top drive lubrication system and methods
US8499858B2 (en) 2005-12-20 2013-08-06 Canrig Drilling Technology Ltd. Modular top drive lubrication system and methods
US7784535B2 (en) * 2007-06-27 2010-08-31 Varco I/P, Inc. Top drive systems with reverse bend bails
US20090000780A1 (en) * 2007-06-27 2009-01-01 Wells Lawrence E Top drive systems with reverse bend bails
US8651175B2 (en) 2011-01-14 2014-02-18 Tesco Corporation Top drive output torque measurement method
US8739888B2 (en) 2011-04-28 2014-06-03 Tesco Corporation Mechanically actuated casing drive system tool
US20140262521A1 (en) * 2013-03-15 2014-09-18 Cameron Rig Solutions, Inc. Top Drive Main Shaft with Threaded Load Nut
US9359831B2 (en) * 2013-03-15 2016-06-07 Cameron Rig Solutions, Inc. Top drive main shaft with threaded load nut
US9890591B2 (en) 2013-07-15 2018-02-13 Nabors Drilling Technologies Usa, Inc. Top drive module connector and methods
US10323473B2 (en) 2014-12-10 2019-06-18 Nabors Industries, Inc. Modular racker system for a drilling rig
US9739071B2 (en) 2015-02-27 2017-08-22 Nabors Industries, Inc. Methods and apparatuses for elevating drilling rig components with a strand jack
US10407937B2 (en) 2015-02-27 2019-09-10 Nabors Industries, Inc. Methods for elevating drilling rig components with a strand jack

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CA2487218C (en) 2013-01-08
CA2487218A1 (en) 2006-05-09
US7270189B2 (en) 2007-09-18
US20060096751A1 (en) 2006-05-11

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Effective date: 20050119

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