US3675278A - Combination elevator and spider - Google Patents

Combination elevator and spider Download PDF

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Publication number
US3675278A
US3675278A US59558A US3675278DA US3675278A US 3675278 A US3675278 A US 3675278A US 59558 A US59558 A US 59558A US 3675278D A US3675278D A US 3675278DA US 3675278 A US3675278 A US 3675278A
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slip
casing
latch
spider
segments
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US59558A
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Thurman O Powell
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    • 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
    • E21B19/02—Rod or cable suspensions
    • E21B19/06—Elevators, i.e. rod- or tube-gripping devices
    • E21B19/07—Slip-type elevators
    • 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
    • E21B19/12—Rope clamps ; Rod, casings or tube clamps not secured to elevators

Definitions

  • the primary object of the invention is to supply the water well drilling industry with an urgently needed tool for handling plain end well casing, a type universally used in well bores of large diameter.
  • This tool or apparatus will accommodate any size well casing with an exact fit, serving both as elevator and spider and will eliminate the need for the cumbersome, conventional spider and the usual practice of welding on lugs or burning holes in plain end casing and lowering in well by means of bar and chain, wire loops, or some other improvised method.
  • the complete apparatus comprises a duplicate pair that serves alternately and in sequence as elevator and spider for each section of casing as it is attached to top of preceding section, as by welding, and lowered in well bore. Since the two units of the apparatus are essentially identical, each containing in its embodiment all of the components and accessories for serving as elevator or spider, only one will be shown in the drawings and will hereinafter be referred to as an apparatus.
  • the frame of apparatus consists of a plurality of circular, hinged segments that encircle casing and is tightly secured around casing by means of an adjustable latch.
  • Each frame segment is equipped with an automatic, spring action casing slip.
  • the incline bearing surface on frame segment and incline bearing surface on slip coact to force slip to grip and hold casing when stress is applied to lifting bail.
  • the apparatus is accommodated to different size casing by adding, dropping, or exchanging frame segments, which are cast in more than one length, then when x number of segments lap or fail to reach around casing, one or more segments are exchanged for shorter or longer segments, as the case requires, and the adjustable latch will compensate for any lack in exact fit.
  • the foundation for the operation when using this combination apparatus may be a rotary table, casing sills with a section of steel plate or some other flat surface that will support the weight of a string of casing.
  • the energy for operation is supplied through the usual draw works, block, lines and hook, which is attached to lifting bail to raise and lower casing in well bore.
  • One unit of apparatus picks up a section of casing, which is lowered in well bore to a point where apparatus rests on foundation and becomes an acting casing spider by gripping and holding while the other unit of apparatus picks up the next section, which is to be attached to top of preceding section, as by welding; then the bottom apparatus is released and the casing lowered further in well, to a point where this unit rests on foundation and becomes the acting spider.
  • This routine is continued until all casing has been lowered into well bore. It will be observed from the foregoing that the two identical units of apparatus alternate as elevator and spider, hence, a combination tool.
  • FIG. 1 is an oblique plan view of the embodied apparatus encircling a section of metal well casing
  • FIG. 2 is an exploded sectional view, showing mechanism of certain essential components of the invention.
  • the casing 10 is a section of metal well casing, which is to be lowered in well bore (not shown) by means of lifting bail l1 and draw works (not shown) to a point where apparatus rests on foundation, (not shown) which may be a rotary table or some other suitable foundation.
  • the upper portion of casing 10 is encircled by the embodied apparatus, comprising multiple hinged frame segments 14 and two latch segments 25. Segments are interconnected by meshing lugs 21 with ears 20, which aligns opening in 21 with opening in 20 into which hinge bolt 12 is inserted and secured by nut 13.
  • paratus is adapted to be secured around around casinfi 10 by Inserting latch bolt 32 in opening 23, seating bolt hea 24 m bell seat 23, grasping hand hold 33 and swinging latch bolt 32 into slot 35, then tightening nut 31 on washer 34, forcing washer 34 into bell seat 23.
  • Slip mechanism is more clearly shown in FIG. 2, wherein slip pin holds tension on slip activating spring, which is seated in bore hole 28 and secured by metal plate 17 and set screws 16.
  • Metal mandrel 22 (a frustum of a cone) is babbited on end of lifting bail l1 and anchored in slotted, tapered opening 18. Set screw 19 holds mandrel in place when bail is relaxed.
  • lifting bail 11 has metal mandrel babbited to lower end and is to be anchored in slotted, tapered opening 18 for lifting and lowering apparatus.
  • Frame segments 14 are interconnected by meshing lugs 21 with ears 20, aligning openings 30 into which hinge bolt 12 is inserted and secured by nut 13.
  • Spiral spring 27 is inserted in inclined, elongated bore hole 28, then when slip 15 is lowered into operating position, spline 37 engages spline 38, slip pin 36 enters bore hole 28 compressing spring 27. Tension is kept on spring 27 by means of metal plate 17 over slip pin 36, secured by set screws 16 in screw holes 26.

Abstract

Apparatus encircles, grips and holds plain end well casing being lowered into bore hole, or removed therefrom.

Description

O Unlted States Patent {151 3,6 75,27 8 Powell {451 July 11, 1972 i541 COMBINATION ELEVATOR AND l,666,62l 4/1928 Greenwood ..24/249 DP SPIDER 2.145.066 1/1939 [72] Inventor: Thurman 0. Powell, Box 453, Cross 230L625 l [942 Plains Callahan County Tex 76443 259L763 4/1952 l,6l3,439 1/1927 [22] Filed: July 30, I970 l,889,592 [M932 1967 5!? 7/1934 2] A I N l: l 1 pp 0 59-553 2,969,845 l/l96l Hester ..24/263 D I I U-S. (:l. I l v v I v v v I l l I Examiner-Danald [5|] Int. Cl ..ll2ld 4l/02 [58] Field of Search llll ..24/249 DP, 263 D, 263 SC, 263 DL. 57 13" ACT 24/263 D5, 263 DT, 263 HA, 263 DD, 263 DJ, 263 1 PC, 263 DC}, 263 DN Apparatus encircles, grips and holds plain and well casing being lowered into bore hole, or removed therefrom. [56] References Clled 1 Clahn, 2 Drawing figures UNITED STATES PATENTS [552,062 9/1925 Krell ..24/249 DP PATENT'EDJuL 1 1 m2 SHEET 10F 2 AT TORN EY PATENTEDJUL 1 1 m2 sum 2 or 2 ATTORNEY COMBINATION ELEVATOR AND SPIDHI This invention relates to a tool or apparatus for lowering plain end and collared casing in well bores and removing same therefrom, and would be generally classified as a combination casing elevator and spider.
The primary object of the invention is to supply the water well drilling industry with an urgently needed tool for handling plain end well casing, a type universally used in well bores of large diameter.
This tool or apparatus, as designed, will accommodate any size well casing with an exact fit, serving both as elevator and spider and will eliminate the need for the cumbersome, conventional spider and the usual practice of welding on lugs or burning holes in plain end casing and lowering in well by means of bar and chain, wire loops, or some other improvised method.
The complete apparatus comprises a duplicate pair that serves alternately and in sequence as elevator and spider for each section of casing as it is attached to top of preceding section, as by welding, and lowered in well bore. Since the two units of the apparatus are essentially identical, each containing in its embodiment all of the components and accessories for serving as elevator or spider, only one will be shown in the drawings and will hereinafter be referred to as an apparatus.
The frame of apparatus consists of a plurality of circular, hinged segments that encircle casing and is tightly secured around casing by means of an adjustable latch. Each frame segment is equipped with an automatic, spring action casing slip. The incline bearing surface on frame segment and incline bearing surface on slip coact to force slip to grip and hold casing when stress is applied to lifting bail.
The apparatus is accommodated to different size casing by adding, dropping, or exchanging frame segments, which are cast in more than one length, then when x number of segments lap or fail to reach around casing, one or more segments are exchanged for shorter or longer segments, as the case requires, and the adjustable latch will compensate for any lack in exact fit.
The foundation for the operation when using this combination apparatus may be a rotary table, casing sills with a section of steel plate or some other flat surface that will support the weight of a string of casing. The energy for operation is supplied through the usual draw works, block, lines and hook, which is attached to lifting bail to raise and lower casing in well bore. One unit of apparatus picks up a section of casing, which is lowered in well bore to a point where apparatus rests on foundation and becomes an acting casing spider by gripping and holding while the other unit of apparatus picks up the next section, which is to be attached to top of preceding section, as by welding; then the bottom apparatus is released and the casing lowered further in well, to a point where this unit rests on foundation and becomes the acting spider. This routine is continued until all casing has been lowered into well bore. It will be observed from the foregoing that the two identical units of apparatus alternate as elevator and spider, hence, a combination tool.
The invention may be more readily understood by referring to the accompanying drawings and the description thereof, and whereas:
FIG. 1 is an oblique plan view of the embodied apparatus encircling a section of metal well casing;
FIG. 2 is an exploded sectional view, showing mechanism of certain essential components of the invention.
Referring to FIG. 1, the casing 10 is a section of metal well casing, which is to be lowered in well bore (not shown) by means of lifting bail l1 and draw works (not shown) to a point where apparatus rests on foundation, (not shown) which may be a rotary table or some other suitable foundation. The upper portion of casing 10 is encircled by the embodied apparatus, comprising multiple hinged frame segments 14 and two latch segments 25. Segments are interconnected by meshing lugs 21 with ears 20, which aligns opening in 21 with opening in 20 into which hinge bolt 12 is inserted and secured by nut 13. Ap-
paratus is adapted to be secured around around casinfi 10 by Inserting latch bolt 32 in opening 23, seating bolt hea 24 m bell seat 23, grasping hand hold 33 and swinging latch bolt 32 into slot 35, then tightening nut 31 on washer 34, forcing washer 34 into bell seat 23. Slip mechanism is more clearly shown in FIG. 2, wherein slip pin holds tension on slip activating spring, which is seated in bore hole 28 and secured by metal plate 17 and set screws 16. Metal mandrel 22 (a frustum of a cone) is babbited on end of lifting bail l1 and anchored in slotted, tapered opening 18. Set screw 19 holds mandrel in place when bail is relaxed.
Referring to FIG. 2, lifting bail 11 has metal mandrel babbited to lower end and is to be anchored in slotted, tapered opening 18 for lifting and lowering apparatus. Frame segments 14 are interconnected by meshing lugs 21 with ears 20, aligning openings 30 into which hinge bolt 12 is inserted and secured by nut 13. Spiral spring 27 is inserted in inclined, elongated bore hole 28, then when slip 15 is lowered into operating position, spline 37 engages spline 38, slip pin 36 enters bore hole 28 compressing spring 27. Tension is kept on spring 27 by means of metal plate 17 over slip pin 36, secured by set screws 16 in screw holes 26.
The vertical depth of the slotted spline 38 being greater than the vertical width of spline 37 and the incline in bore hole 28 will leave slip 15 free to move outward and downward to grip and hold casing. The tension created on spring 27 when slip 15 moves downward to grip casing 10 will automatically return slip 15 to its original position when latch is released. Since the incline of slip bearing surface is equal to incline 39 of frame segment 14, slip 15 will remain vertical at all times.
lclairn:
l. A combination casing elevator and spider and method, for lowering casing in well bores and removing same therefrom, comprising a duplicate pair; each consisting of a plurality of interconnected, circular hinged frame segments of varying lengths, with inclined, splined slip bearing surfaces, there being an inclined, elongated bore hole for slip activating spring and splined slip pin; casing slips with groove gripping surface, inclined bearing surface and spline connecting slip with slip activating pin; spiral spring seated in inclined, elon gated bore hole, and metal plate secured with set screws to hold slip in place and tension on spring; two latch sections or segments, which are a part of the frame, and latch bolt with a threaded portion, a washer, a nut, a hand hold, spherical seating surface and bell seats for bolt head and washer; there being a slot in latch segment to receive latch bolt when closing apparatus around casing, there being a vertical slot and ta red opening in each frame segment as optional anchor position for lifting bail.
i t i t t

Claims (1)

1. A combination casing elevator and spider and method, for lowering casing in well bores and removing same therefrom, comprising a duplicate pair; each consisting of a plurality of interconnected, circular hinged frame segments of varying lengths, with inclined, splined slip bearing surfaces, there being an inclined, elongated bore hole for slip activating spring and splined slip pin; casing slips with groove gripping surface, inclined bearing surface and spline connecting slip with slip activating pin; spiral spring seated in inclined, elongated bore hole, and metal plate secured with set screws to hold slip in place and tension on spring; two latch sections or segments, which are a part of the frame, and latch bolt with a threaded portion, a washer, a nut, a hand hold, spherical seating surface and bell seats for bolt head and washer; there being a slot in latch segment to receive latch bolt when closing apparatus around casing, there being a vertical slot and tapered opening in each frame segment as optional anchor position for lifting bail.
US59558A 1970-07-30 1970-07-30 Combination elevator and spider Expired - Lifetime US3675278A (en)

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Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934318A (en) * 1973-10-02 1976-01-27 Hubert Joseph Mertens Pipe clip
WO1979000908A1 (en) * 1978-04-10 1979-11-15 Leffer Stahl & App Machine for pulling out a drilling tube of the ground
US4275487A (en) * 1979-01-04 1981-06-30 Gray Charles E Well casing spider
FR2491991A1 (en) * 1980-10-14 1982-04-16 Gray Charles Combined well casing spider and elevator - has bowl section with casing gripping slips and pivotable gate members
US4834441A (en) * 1987-11-25 1989-05-30 Ingersoll-Rand Company Drill pipe handling device
US4976482A (en) * 1988-04-07 1990-12-11 P. Boer & Zn. B.V. Apparatus for clamping pipe or tube
US5072981A (en) * 1990-10-26 1991-12-17 The United States Of America, As Represented By The Secretary Of Agriculture Soil moisture tube extraction device
US5333925A (en) * 1993-02-01 1994-08-02 Foley Jr Larry Containment apparatus for manual pipe tongs
WO1999058810A2 (en) * 1998-05-12 1999-11-18 Weatherford/Lamb, Inc. Apparatus and method for facilitating connection of a tubular to a string of tubulars
US6082793A (en) * 1998-05-01 2000-07-04 Gagnon; Emile H. Thread-on collared yoke for power riser pipes
US6264395B1 (en) 2000-02-04 2001-07-24 Jerry P. Allamon Slips for drill pipe or other tubular goods
US6378399B1 (en) * 1997-09-15 2002-04-30 Daniel S. Bangert Granular particle gripping surface
US6471439B2 (en) 2000-02-04 2002-10-29 Jerry P. Allamon Slips for drill pipes or other tubular members
WO2004011765A1 (en) * 2002-07-29 2004-02-05 Weatherford/Lamb, Inc. Flush mounted spider
WO2005040548A1 (en) * 2003-09-29 2005-05-06 Shamrock Research & Development, Inc. Method and apparatus for controlling the ascent and descent of pipe in a well bore
US20060027375A1 (en) * 2003-09-19 2006-02-09 Thomas Allen K Jr Automatic false rotary
US20060254866A1 (en) * 2005-05-12 2006-11-16 David Shahin Equalized load distribution slips for spider and elevator
US20070102162A1 (en) * 1997-10-28 2007-05-10 Manfred Jansch Apparatus for retaining two strings of tubulars
US20070137868A1 (en) * 2004-01-15 2007-06-21 Gisle Vold Safety interlock for control lines
US7249637B2 (en) 1997-09-02 2007-07-31 Weatherford/Lamb, Inc. Method and device to clamp control lines to tubulars
US20100006807A1 (en) * 2008-07-09 2010-01-14 Claxton Engineering Services Limited Tension ring lifting assembly
US20100319932A1 (en) * 2009-06-22 2010-12-23 Frank's Casing Crew And Rental Tools, Inc. Large diameter tubular lifting apparatuses and methods
US20100326666A1 (en) * 2009-06-29 2010-12-30 Vetco Gray Inc. Split assembly attachment device
US20140346792A1 (en) * 2013-05-24 2014-11-27 L'air Liquide, Societe Anonyme Pour I'etude Et I'exploitation Des Procedes Georges Claude System for distributing the weight of a column section
US20150197996A1 (en) * 2003-10-21 2015-07-16 Burney J. Latiolais, Jr. Load Ring for Lifting By Elevator, Of Casing Having An Upset
US20180112476A1 (en) * 2015-04-07 2018-04-26 Robotic Drilling Systems As Apparatus and Method for Gripping a Tubular Member
US10006259B2 (en) 2009-06-22 2018-06-26 Frank's International, Llc Large diameter tubular lifting apparatuses and methods
US10774600B2 (en) 2016-08-19 2020-09-15 Weatherford Technology Holdings, Llc Slip monitor and control

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1552062A (en) * 1924-12-22 1925-09-01 Krell George Clamping device
US1613439A (en) * 1924-12-23 1927-01-04 Harry J Byers Combined rod grip and slip support
US1666621A (en) * 1926-03-01 1928-04-17 Dolphice H Greenwood Combination sucker-rod elevator and spider
US1889592A (en) * 1927-03-04 1932-11-29 Brandt Fokko Rod or pipe clamp
US1967517A (en) * 1933-06-26 1934-07-24 Lester B Clark Method and apparatus for handling pipe in wells
US2145066A (en) * 1937-11-08 1939-01-24 A P Merritt Elevator
US2301625A (en) * 1941-04-09 1942-11-10 Baash Ross Tool Co Safety clamp
US2591763A (en) * 1952-04-08 safety clamp fob dkill collars
US2969845A (en) * 1959-01-23 1961-01-31 Dewey S Hester Drill pipe saving device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2591763A (en) * 1952-04-08 safety clamp fob dkill collars
US1552062A (en) * 1924-12-22 1925-09-01 Krell George Clamping device
US1613439A (en) * 1924-12-23 1927-01-04 Harry J Byers Combined rod grip and slip support
US1666621A (en) * 1926-03-01 1928-04-17 Dolphice H Greenwood Combination sucker-rod elevator and spider
US1889592A (en) * 1927-03-04 1932-11-29 Brandt Fokko Rod or pipe clamp
US1967517A (en) * 1933-06-26 1934-07-24 Lester B Clark Method and apparatus for handling pipe in wells
US2145066A (en) * 1937-11-08 1939-01-24 A P Merritt Elevator
US2301625A (en) * 1941-04-09 1942-11-10 Baash Ross Tool Co Safety clamp
US2969845A (en) * 1959-01-23 1961-01-31 Dewey S Hester Drill pipe saving device

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934318A (en) * 1973-10-02 1976-01-27 Hubert Joseph Mertens Pipe clip
WO1979000908A1 (en) * 1978-04-10 1979-11-15 Leffer Stahl & App Machine for pulling out a drilling tube of the ground
US4275487A (en) * 1979-01-04 1981-06-30 Gray Charles E Well casing spider
FR2491991A1 (en) * 1980-10-14 1982-04-16 Gray Charles Combined well casing spider and elevator - has bowl section with casing gripping slips and pivotable gate members
US4834441A (en) * 1987-11-25 1989-05-30 Ingersoll-Rand Company Drill pipe handling device
US4976482A (en) * 1988-04-07 1990-12-11 P. Boer & Zn. B.V. Apparatus for clamping pipe or tube
US5072981A (en) * 1990-10-26 1991-12-17 The United States Of America, As Represented By The Secretary Of Agriculture Soil moisture tube extraction device
US5333925A (en) * 1993-02-01 1994-08-02 Foley Jr Larry Containment apparatus for manual pipe tongs
US7740078B2 (en) 1997-09-02 2010-06-22 Weatherford/Lamb, Inc. Method and device to clamp control lines to tubulars
US7249637B2 (en) 1997-09-02 2007-07-31 Weatherford/Lamb, Inc. Method and device to clamp control lines to tubulars
US6378399B1 (en) * 1997-09-15 2002-04-30 Daniel S. Bangert Granular particle gripping surface
US20070102162A1 (en) * 1997-10-28 2007-05-10 Manfred Jansch Apparatus for retaining two strings of tubulars
US7673691B2 (en) * 1997-10-28 2010-03-09 Weatherford/Lamb, Inc. Apparatus for retaining two strings of tubulars
US6082793A (en) * 1998-05-01 2000-07-04 Gagnon; Emile H. Thread-on collared yoke for power riser pipes
WO1999058810A3 (en) * 1998-05-12 2000-01-06 Weatherford Lamb Apparatus and method for facilitating connection of a tubular to a string of tubulars
WO1999058810A2 (en) * 1998-05-12 1999-11-18 Weatherford/Lamb, Inc. Apparatus and method for facilitating connection of a tubular to a string of tubulars
US6264395B1 (en) 2000-02-04 2001-07-24 Jerry P. Allamon Slips for drill pipe or other tubular goods
US6471439B2 (en) 2000-02-04 2002-10-29 Jerry P. Allamon Slips for drill pipes or other tubular members
EP1983152A3 (en) * 2002-07-29 2008-11-05 Weatherford/Lamb, Inc. Flush mounted spider
US20050077039A1 (en) * 2002-07-29 2005-04-14 Weatherford/Lamb, Inc. Flush mounted spider
US7143849B2 (en) 2002-07-29 2006-12-05 Weatherford/Lamb, Inc. Flush mounted spider
WO2004011765A1 (en) * 2002-07-29 2004-02-05 Weatherford/Lamb, Inc. Flush mounted spider
US7665551B2 (en) * 2002-07-29 2010-02-23 Weatherford/Lamb, Inc. Flush mounted spider
US20070144730A1 (en) * 2002-07-29 2007-06-28 David Shahin Flush mounted spider
US6892835B2 (en) 2002-07-29 2005-05-17 Weatherford/Lamb, Inc. Flush mounted spider
EP2278116A3 (en) * 2002-07-29 2012-10-31 Weatherford/Lamb, Inc. Flush mounted spider
EP1983152A2 (en) * 2002-07-29 2008-10-22 Weatherford/Lamb, Inc. Flush mounted spider
NO327071B1 (en) * 2002-07-29 2009-04-14 Weatherford Lamb Flush mounted mounting device
US7314090B2 (en) 2003-09-19 2008-01-01 Weatherford/Lamb, Inc. Automatic false rotary
US20060027375A1 (en) * 2003-09-19 2006-02-09 Thomas Allen K Jr Automatic false rotary
US7681631B2 (en) 2003-09-19 2010-03-23 Weatherford/Lamb, Inc. Automatic false rotary
WO2005040548A1 (en) * 2003-09-29 2005-05-06 Shamrock Research & Development, Inc. Method and apparatus for controlling the ascent and descent of pipe in a well bore
US9567815B2 (en) * 2003-10-21 2017-02-14 Frank's International, Llc Load ring for lifting by elevator, of casing having an upset
US20150197996A1 (en) * 2003-10-21 2015-07-16 Burney J. Latiolais, Jr. Load Ring for Lifting By Elevator, Of Casing Having An Upset
US20070137868A1 (en) * 2004-01-15 2007-06-21 Gisle Vold Safety interlock for control lines
US7717184B2 (en) 2004-01-15 2010-05-18 Weatherford/Lamb, Inc. Safety interlock for control lines
US20100108330A1 (en) * 2005-05-12 2010-05-06 David Shahin Equalized load distribution slips for spider and elevator
US20060254866A1 (en) * 2005-05-12 2006-11-16 David Shahin Equalized load distribution slips for spider and elevator
US7686088B2 (en) 2005-05-12 2010-03-30 Weatherford/Lamb, Inc. Equalized load distribution slips for spider and elevator
US8020627B2 (en) 2005-05-12 2011-09-20 Weatherford/Lamb, Inc. Equalized load distribution slips for spider and elevator
US8096540B2 (en) 2008-07-09 2012-01-17 Dannie Claxton Tension ring lifting assembly
US20100006807A1 (en) * 2008-07-09 2010-01-14 Claxton Engineering Services Limited Tension ring lifting assembly
US20100319932A1 (en) * 2009-06-22 2010-12-23 Frank's Casing Crew And Rental Tools, Inc. Large diameter tubular lifting apparatuses and methods
US20130186643A1 (en) * 2009-06-22 2013-07-25 Frank's Casing Crew And Rental Tools, Inc. Large diameter tubular lifting apparatuses and methods
US9115548B2 (en) * 2009-06-22 2015-08-25 Frank's International, Llc Large diameter tubular lifting apparatuses and methods
US9115547B2 (en) 2009-06-22 2015-08-25 Frank's International, Llc Large diameter tubular lifting apparatuses and methods
US10006259B2 (en) 2009-06-22 2018-06-26 Frank's International, Llc Large diameter tubular lifting apparatuses and methods
US8322436B2 (en) * 2009-06-29 2012-12-04 Vetco Gray Inc. Split assembly attachment device
US20100326666A1 (en) * 2009-06-29 2010-12-30 Vetco Gray Inc. Split assembly attachment device
US20140346792A1 (en) * 2013-05-24 2014-11-27 L'air Liquide, Societe Anonyme Pour I'etude Et I'exploitation Des Procedes Georges Claude System for distributing the weight of a column section
US9187194B2 (en) * 2013-05-24 2015-11-17 L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude System for distributing the weight of a column section
US20180112476A1 (en) * 2015-04-07 2018-04-26 Robotic Drilling Systems As Apparatus and Method for Gripping a Tubular Member
US11060360B2 (en) * 2015-04-07 2021-07-13 Canrig Robotic Technologies As Apparatus and method for gripping a tubular member
US10774600B2 (en) 2016-08-19 2020-09-15 Weatherford Technology Holdings, Llc Slip monitor and control
US11236555B2 (en) 2016-08-19 2022-02-01 Weatherford Technology Holdings, Llc Slip monitor and control

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