US3633771A - Apparatus for moving drill pipe into and out of an oil well derrick - Google Patents

Apparatus for moving drill pipe into and out of an oil well derrick Download PDF

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Publication number
US3633771A
US3633771A US61267A US3633771DA US3633771A US 3633771 A US3633771 A US 3633771A US 61267 A US61267 A US 61267A US 3633771D A US3633771D A US 3633771DA US 3633771 A US3633771 A US 3633771A
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United States
Prior art keywords
boom
derrick
extension
ram
raised
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Expired - Lifetime
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US61267A
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English (en)
Inventor
Homer J Woolslayer
Joseph R Woolslayer
Cecil Jenkins
Erwin A Campbell
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Lee C Moore Corp
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Lee C Moore Corp
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
    • E21B19/15—Racking of rods in horizontal position; Handling between horizontal and vertical position
    • E21B19/155—Handling between horizontal and vertical position

Definitions

  • a boom has an inner end pivotally supported in front of the bottom of an oil well drilling derrick to enable the boom to be swung in a vertical plane toward and away from the derrick.
  • a boom extension is hinged to the outer end of the boom on a horizontal axis and extends upwardly from the boom when the latter is in its raised position.
  • Pivotal means pivotally connected to the outer end of the boom extension on a horizontal axis, supports clamping means for gripping drill pipe.
  • the pivotal means is positioned to allow the gripped drill pipe to swing across the boom and boom extension as the boom is raised or lowered, whereby drill pipe suspended from the elevators can be moved back and forth between upright position in the derrick and forwardly extending position near its PATENTED JAM 1 1972 1633.771
  • SHEET 2 BF 5 m/uz-wroes. #0445 J. 14/00454 AYE/a JOSEPH R. WOOLSLAYER PATENTEB JAM 1 1972 SHEET 3 [1F 5 Y I fw/l wawm ATTORNEYS.
  • the latter system has certain advantages and is especially desirable when drilling is being done from a barge or the like floating on a body of water, because it relieves the derrick from inertial forces induced by wave action and aggravated by the great weight of the racked pipe if it is standing up in the derrick.
  • Various ways of racking pipe horizontally outside a derrick have been proposed, but they involve complicated apparatus and are slow in operation.
  • FIG. 1 is a fragmentary side view of an oil well derrick showing our pipe-handling apparatus in its upper position;
  • FIG. 2 is a front'view as seen from the right-hand side of FIG. 1;
  • FIG. 3 is an enlarged fragmentary plan view of the pipe-handling apparatus, taken on the line llI--III of FIG. 1;
  • FIG. 4 is a simplified side view of the derrick showing the pipe-handling apparatus in its lowest position
  • FIGS. 5 to 8 are diagrams of the hydraulic circuits used with the pipe-handling apparatus, showing the positions of the valves and pistons at different stages in the operation of the apparatus.
  • an oil well derrick 1 is shown mounted on a substructure 2, from which a string of drill pipe 3 extends down into a well.
  • the upper end of the string formed by a stand 4 of three pipes, is suspended from the traveling block 5 by any suitable detachable means 6, herein called elevators.
  • the pipe stand is shown disconnected from the rest of the string below it and gripped at two vertically spaced points by clamping means which may be hydraulically operated jaws 7.
  • clamping means which may be hydraulically operated jaws 7.
  • These jaws are at the free ends of arms 8, the outer end portions of which are secured to the upper and lower ends of pivotal means, preferably a tall structural steel strongback 9. Although the jaws hold the pipe, they do not necessarily grip it so tightly as to prevent it from rotating while controlled by the strongback.
  • a pair of trunnions II Projecting laterally from the central portion of the strongback is a pair of trunnions II, the ends of which are joumaled in the upper end of a boom extension 12.
  • the derrick side of the lower end of the extension is pivotally connected or hinged at 13 to the derrick side of the upper end of an upright boom 14.
  • the hinge axis is parallel to the axis of the trunnions.
  • the lower end of the boom is pivotally mounted, likewise on a horizontal axis 16, on brackets 17 projecting forward from the front of the upper part of the substructure. While the boom is in its raised position, the boom extension 12 is held in its most extended position by a pair of laterally spaced vertical links 18 pivotally connected to the lower end of the extension in front of its connection to the boom.
  • the lower ends of the links are pivotally supported by brackets 19 projecting from the front of the substructure below the brackets that support the boom.
  • These links are formed from fully extended hydraulic rams that are maintained fully extended by hydraulic pressure while the boom is being swung down to its lower position. Swinging of the boom forward and down is accomplished by a second pair of rams 21, the upper ends of which are pivotally connected at 22 to the lower part of the front of the boom. These rams extend downwardly and are pivotally supported by brackets 23 at the bottom of the substructure.
  • the next step is to disconnect the reclining pipe stand from the elevators so that the pipe can be moved forward and down into a pipe rack.
  • This is done by supplying hydraulic pressure to the outer ends of link rams 18, which are now nearly horizontal, so that those rams are shortened to thereby cause the upper end of the boom extension to be swung forward and down into line with the boom as shown in full lines in FIG. 4.
  • the former upper end of the strongback swings down through the extension slot and sets the pipe stand down horizontally on a suitable support or rack 27.
  • the clamps are then disconnected from the pipe so that the boom can be swung upward again in order to grip the next stand suspended from the elevators and lower it to the pipe rack. This cycle is repeated until all of the drill pipe has been racked in horizontal position in front of the substructure.
  • the procedure just outlined is reversed. That is, the boom and its extension are placed in their lowest position with the strongback horizontal over the pipe rack so that the clamps can be attached to a stand of pipe therein. Then the link rams are extended to cause the boom extension to swing upwardly and rearwardly toward the derrick to the dotted-line positions in FIG. 4 in order to lift the inner end of the pipe stand up to a point where the lowered elevators can be attached to it. After this connection has been made, the elevators are raised at a controlled rate while the boom is swung upwardly by its rams 21. As the boom rises, the extended link rams, which now serve only as links, cause the boom extension to swing forward relative to the boom. The combined movement of the boom, boom extension and rising elevators will cause the lower end of the strongback to swing inwardly through the boom extension toward the centerline of the derrick until the pipe stand is in its vertical position hanging straight down from the elevators.
  • FIGS. 5 to 8 The hydraulic circuit for raising and lowering the boom 14 and for folding and unfolding the boom extension 12 is shown in FIGS. 5 to 8.
  • FIG. 5 the circuit is shown just as the boom starts to swing down from its upper position.
  • each ram 2l is fully extended as shown in FIG. 1, but hydraulic pressure is delivered to the upper or rod end of its cylinder by means of a pump 30 to start to shorten the ram.
  • the flow is through lines 31 and 32, a three-position valve 33, and lines 34 and 35 to the ram cylinder.
  • the head end of the cylinder is connected by a line 37, valve 33 and lines 38, 39 and 40 with a tank 41.
  • Rams 18 also are fully extended at this time, and they continue to be extended and to serve as links of fixed length while the boom is being swung down to its lower position. Fluid pressure is maintained in the head end of each cylinder of these rams by means of the pump through line 31, valve 33, and a line 45. The rod end of the cylinder is connected with the tank through a line 46, valve 33, and line 40. As the boom is lowered, extended ram links 18 cause the boom extension 12 to fold as previously explained until it reaches the dottedline position shown in FIG. 4,. At this time valve 33 is shifted to the position shown in FIG. 6, where it will be seen that both ends of the cylinder of ram 21 now are connected with the tank, the rod end of the cylinder being connected to the tank by means of lines 35 and 34, the valve 33, and lines 38, 39, and 40.
  • the attitude or angle of the strongback relative to the ground is controlled by the traveling block and elevators in the derrick.
  • the traveling block runs along a vertical track 48 (FIG. 2) in the derrick so that the block cannot swing away from the centerline of the derrick.
  • the attitude of the strongback during the rest of its travel down to the pipe rack 27 can be controlled by a tag line if desired. A way of controlling it automatically will be explained presently.
  • valve 33 When a stand of drill pipe is to be lifted by the strongback from the rack and swung over for connection to the lowered elevators so that the pipe can be raised in the derrick, valve 33 is shifted to its third position to close it as indicated in FIG. 7, and a previously closed three-position valve 51 is opened. Lines 35 and 37 continue to connect ram 21 with the tank through this valve and line 39.
  • the pump is connected through lines 31 and 32, valve 51, and lines 52 and 45 with the head end of ram cylinder 18, which thereby extends the ram, causing the boom extension to swing upwardly and toward the derrick to the dotted-line position shown in FIG. 4.
  • the rod end of the same cylinder is connected at this time to a line 53, valve 51, and line 39 leading to the tank.
  • valve 51 is shifted to connect the pump through lines 32 and 37 with the head end of ram 21, as shown in FIG. 8.
  • the ram then starts to extend in order to raise the boom.
  • Ram 18 remains extended so that as the boom rises, the boom extension 12 is swung relative to the boom in a direction away from the elevators.
  • the traveling block is being raised to lift the upper end of the drill pipe at the proper rate as its lower end swings inwardly toward the derrick.
  • the actuator includes a circular housing in which there is a vane (not shown) that is secured to a shaft 58 connected to the end of the adjoining trunnion 11 of the strongback.
  • a vane (not shown) that is secured to a shaft 58 connected to the end of the adjoining trunnion 11 of the strongback.
  • the strongback rotates in a counterclockwise direction. It continues to rotate in this same direction from the dotted line to the full line position in FIG. 4.
  • the strongback is rotated in the opposite direction. It rotates relative to the boom extension considerably more degrees in FIG. 4 than it does in traveling between its dotted line and vertical positions.
  • the rotation in FIG. 4 may be about l38 while the rest of the rotation is about 67.
  • the hydraulic circuit for controlling the actuator likewise is shown in FIGS. 5 to 8 as it uses the same pump.
  • This circuit includes a metering ram 60 that is pivotally connected to the derrick side of the boom and boom extension and extends across hinge 13. It is extended and shortened by the folding and unfolding of the boom extension. In FIG. I this ram has been fully extended by the boom extension.
  • the pump 30 pumps fluid through lines 31 and 61, a three-position valve 62 and a line 63 to one side of the actuator.
  • the exhaust from the other side of the actuator leaves through line 64, valve 62 and a line 65 connected to the rod end of the metering ram.
  • the ram meters the fluid from the actuator to regulate turning of the actuator.
  • the head end of the ram is connected at this time with tank 41 by means of line 66, valve 62, and a line 67.
  • valve 62 When the boom reaches its lower position, valve 62 is shifted by its pilot 68 when valve 33 is shifted to its FIG. 6 position, so that although the connection between the pump and the actuator remains the same, exhaust fluid from the actuator now flows from line 64 to line 66 and into the head end of the metering ram cylinder.
  • the opposite end of the cylinder is connected by line 65, valve 62, and line 67 with the tank. Consequently, it is now the larger volume end of the cylinder that meters the flow from the actuator as the ram is extended by the unfolding boom extension, and the actuator is thereby allowed to rotate a greater number of degrees than before in order to turn the strongback relative to the boom extension from the dotted-line position in FIG. 4 to its full line horizontal position.
  • valve 33 is closed which causes pilot 68 to close valve 62, and a previously closed valve 71 is opened to connect the head end of metering ram 60 with actuator 56 through lines 72 and 73, as shown in FIG. 7.
  • Folding of the boom extension causes the ram to force fluid into the actuator to turn it the required amount in a clockwise direction.
  • the exhaust from the actuator returns to the tank through line 74, valve 71, and line 75.
  • the rod end of the metering cylinder is maintained full of fluid by the pump 30 through lines 31 and 76, valve 71, and line 77.
  • valve 71 is shifted by its pilot 78 to the position shown in FIG. 8, when valve 51 is shifted. Raising of the boom causes its extension 12 to start to unfold and that extends the metering ram, which forces fluid from its rod end through line 77, valve 71 and line 73 to the actuator to continue its rotation. Exhaust from the actuator remains connected with the tank along the same route as before, but now it is the head end of the ram cylinder that is kept filled with fluid by means of the pump and line 72.
  • the metering ram meters fluid flowing from the actuator while the strongback is being lowered, and meters fluid flowing to the actuator while the strongback is being raised.
  • a fluid pressure-actuated device for controlling the angle of said pivotal means relative to the ground as the boom is being raised and lowered, and a fluid pressure system connected with said device for actuating it in opposite directions, said system including a hydraulic ram pivotally connected at its ends to the boom and boom extension for actuation thereby, the ram having a fluid pressure cylinder with a head end and a rod end, a pump, means for connecting the pump with the rod end of the ram cylinder and for connecting the head end of that cylinder with the inlet of said device while said boom extension is being swung from its lowest position toward the derrick, means for connecting the pump with the head end of the ram cylinder and for connecting the rod end of that cylinder with the inlet of said device while the boom is being raised, means for connecting the pump with the inlet of said device and for connecting the outlet of said device with the rod end of the ram cylinder while the boom is being lowered, and
  • said extension swinging means include a hydraulic ram pivotally connected at one end to the boom extension, and means pivotally supporting the opposite end of the ram below said horizontal axis, the ram being fully extended while the boom is being raised and lowered, and said apparatus includes means for shortening said ram while the boom is in its lower position to swing said extension away from the derrick to move said pivotal means farther away from the derrick and down to a lower level.
  • said anglecontrolling means includes a fluid ressure-actuated device carried by the boom extension, an a fluid pressure system connected with said device for actuating it, said system including means controlled by the positions of the boom and boom extension relative to each other for metering flow of fluid in the system.
  • said fluidmetering means include a hydraulic ram pivotally connected at its ends to the boom and boom extension for actuation thereby, and conduits connecting the ram into said system.
  • said pivotal means is a strongback pivotally connected at its central portion to said boom extension, and said clamping means are spaced lengthwise of the strongback and project from one side of it
  • said apparatus includes a fluid pressure-actuated device carried by the boom extension and operatively connected with the strongback, and means for supplying fluid under pressure to said device to control the angle of the strongback relative to the ground as the boom is raised and lowered.

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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)
US61267A 1970-08-05 1970-08-05 Apparatus for moving drill pipe into and out of an oil well derrick Expired - Lifetime US3633771A (en)

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US6126770A 1970-08-05 1970-08-05

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JP (1) JPS5114082B1 (enrdf_load_stackoverflow)
AU (1) AU469791B2 (enrdf_load_stackoverflow)
FR (1) FR2101238B1 (enrdf_load_stackoverflow)
GB (1) GB1289807A (enrdf_load_stackoverflow)
NL (1) NL153971B (enrdf_load_stackoverflow)

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750769A (en) * 1970-02-02 1973-08-07 Dresser Ind Drill pipe positioner for earth boring machine
US3986619A (en) * 1975-06-11 1976-10-19 Lee C. Moore Corporation Pipe handling apparatus for oil well drilling derrick
US4109800A (en) * 1973-10-10 1978-08-29 Bj-Hughes Inc. Multi-stage well-drilling mast assembly
US4172684A (en) * 1978-01-30 1979-10-30 Lee C. Moore Corporation Floor level pipe handling apparatus
US4295527A (en) * 1978-04-12 1981-10-20 Ruesse Rolf A Process and device for the centering of casings as used for underground drilling
US4547110A (en) * 1983-05-03 1985-10-15 Guy E. Lane Oil well drilling rig assembly and apparatus therefor
US4552498A (en) * 1983-05-02 1985-11-12 Branham Industries, Inc. Pickup and lay-down apparatus
FR2584451A1 (enrdf_load_stackoverflow) * 1985-06-21 1987-01-09 Apache Corp
US4708581A (en) * 1985-06-21 1987-11-24 W-N Apache Corporation Method of positioning a transfer arm
US4822230A (en) * 1986-10-22 1989-04-18 Maritime Hydraulics A.S. Pipe handling apparatus
US4834604A (en) * 1987-10-19 1989-05-30 Lee C. Moore Corporation Pipe moving apparatus and method
US4951759A (en) * 1988-06-09 1990-08-28 Canrig Manufacturing Ltd. Oil well rig with pipe handling apparatus
WO1993022535A3 (en) * 1992-04-30 1993-12-23 Dreco Group Co Ltd Tubular handling system
WO1999041486A1 (en) * 1998-02-14 1999-08-19 Weatherford/Lamb, Inc. Apparatus and method for handling of tubulars
WO2003060287A1 (en) 2001-12-31 2003-07-24 Maris International Limited Pipe handling apparatus
US6609573B1 (en) * 1999-11-24 2003-08-26 Friede & Goldman, Ltd. Method and apparatus for a horizontal pipe handling system on a self-elevating jack-up drilling unit
US20030196791A1 (en) * 2002-02-25 2003-10-23 N-I Energy Development, Inc. Tubular handling apparatus and method
US6705414B2 (en) 2002-02-22 2004-03-16 Globalsantafe Corporation Tubular transfer system
US20050135902A1 (en) * 2003-12-18 2005-06-23 Spisak Timothy M. Pipe transfer apparatus
WO2005073497A1 (de) * 2004-01-28 2005-08-11 Max Streicher Gmbh & Co. Kg Aa Vorrichtung und verfahren zum handhaben von gegenständen an einer bohranlage
WO2006038790A1 (en) 2004-10-07 2006-04-13 Itrec B.V. Tubular handling apparatus and a drilling rig
US20080060850A1 (en) * 2006-09-11 2008-03-13 Collier Equipment Fabrication Company System and methods for handling drilling pipe
US20080202812A1 (en) * 2007-02-23 2008-08-28 Atwood Oceanics, Inc. Simultaneous tubular handling system
US20090232624A1 (en) * 2007-10-24 2009-09-17 T&T Engineering Services Pipe handling apparatus with arm stiffening
US20090257848A1 (en) * 2004-11-29 2009-10-15 William John Stroshein Apparatus for handling and racking pipes
US20100032213A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Apparatus and method for pre-loading of a main rotating structural member
US7726929B1 (en) 2007-10-24 2010-06-01 T&T Engineering Services Pipe handling boom pretensioning apparatus
US20100230166A1 (en) * 2009-03-12 2010-09-16 T&T Engineering Services Derrickless tubular servicing system and method
US20100254784A1 (en) * 2009-04-03 2010-10-07 T & T Engineering Services Raise-assist and smart energy system for a pipe handling apparatus
US20100296899A1 (en) * 2009-05-20 2010-11-25 T&T Engineering Services Alignment apparatus and method for a boom of a pipe handling system
US20110030942A1 (en) * 2009-08-04 2011-02-10 T&T Engineering Services, Inc. Pipe stand
US7918636B1 (en) * 2007-10-24 2011-04-05 T&T Engineering Services Pipe handling apparatus and method
US20110091304A1 (en) * 2009-10-16 2011-04-21 Friede & Goldman Marketing B.V. Cartridge tubular handling system
US7946795B2 (en) 2007-10-24 2011-05-24 T & T Engineering Services, Inc. Telescoping jack for a gripper assembly
WO2011120627A3 (de) * 2010-04-01 2012-02-23 Herrenknecht Vertical Gmbh Verfahren und vorrichtung zum zuführen und abführen von bohrgestängen zu einer bohrvorrichtung
US8128332B2 (en) 2007-10-24 2012-03-06 T & T Engineering Services, Inc. Header structure for a pipe handling apparatus
US8235104B1 (en) 2008-12-17 2012-08-07 T&T Engineering Services, Inc. Apparatus for pipe tong and spinner deployment
US8408334B1 (en) 2008-12-11 2013-04-02 T&T Engineering Services, Inc. Stabbing apparatus and method
US8419335B1 (en) 2007-10-24 2013-04-16 T&T Engineering Services, Inc. Pipe handling apparatus with stab frame stiffening
US8550174B1 (en) 2008-12-22 2013-10-08 T&T Engineering Services, Inc. Stabbing apparatus for centering tubulars and casings for connection at a wellhead
US20130330151A1 (en) * 2011-11-28 2013-12-12 T&T Engineering Services, Inc. Tubular Stand Building and Racking System
US8876452B2 (en) 2009-04-03 2014-11-04 T&T Engineering Services, Inc. Raise-assist and smart energy system for a pipe handling apparatus
US9091128B1 (en) 2011-11-18 2015-07-28 T&T Engineering Services, Inc. Drill floor mountable automated pipe racking system
NO20141364A1 (no) * 2014-11-13 2016-05-16 Dwellop As Arm for å trekke ut et brønnrør fra en petroleumsbrønn og framgangsmåte for anvendelse av armen
ITMI20142159A1 (it) * 2014-12-17 2016-06-17 Borais Petroleum Invest Co Procedimento e impianto di tipo migliorato per l'inserimento e l'estrazione delle stringhe di aste nei pozzi di produzione di idrocarburi in genere
US9476267B2 (en) 2013-03-15 2016-10-25 T&T Engineering Services, Inc. System and method for raising and lowering a drill floor mountable automated pipe racking system
US9500049B1 (en) * 2008-12-11 2016-11-22 Schlumberger Technology Corporation Grip and vertical stab apparatus and method
US9556689B2 (en) 2009-05-20 2017-01-31 Schlumberger Technology Corporation Alignment apparatus and method for a boom of a pipe handling system
US9845646B2 (en) 2012-08-15 2017-12-19 Liberty Holdings, LLC Pipe handler
US10626687B1 (en) 2018-09-14 2020-04-21 Hawker Equipment Solutions, LLC. Wedge system to extend and elevate a pipe handler
US10920504B1 (en) 2018-07-20 2021-02-16 Hawker Equipment Solutions, LLC. Pipe grabber
CN113863874A (zh) * 2021-09-30 2021-12-31 中国石油天然气股份有限公司 一种用于小修作业的智能油管举升推送装置

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US3095048A (en) * 1959-02-02 1963-06-25 Neill O Submarine automatic oil well drilling machine
US3177944A (en) * 1959-06-02 1965-04-13 Dowty Rotol Ltd Racking mechanism for earth boring equipment
US3333717A (en) * 1965-12-15 1967-08-01 Charles A Scaperotto Attachment for load-handling machinery

Cited By (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750769A (en) * 1970-02-02 1973-08-07 Dresser Ind Drill pipe positioner for earth boring machine
US4109800A (en) * 1973-10-10 1978-08-29 Bj-Hughes Inc. Multi-stage well-drilling mast assembly
US3986619A (en) * 1975-06-11 1976-10-19 Lee C. Moore Corporation Pipe handling apparatus for oil well drilling derrick
US4172684A (en) * 1978-01-30 1979-10-30 Lee C. Moore Corporation Floor level pipe handling apparatus
US4295527A (en) * 1978-04-12 1981-10-20 Ruesse Rolf A Process and device for the centering of casings as used for underground drilling
US4552498A (en) * 1983-05-02 1985-11-12 Branham Industries, Inc. Pickup and lay-down apparatus
US4547110A (en) * 1983-05-03 1985-10-15 Guy E. Lane Oil well drilling rig assembly and apparatus therefor
US4708581A (en) * 1985-06-21 1987-11-24 W-N Apache Corporation Method of positioning a transfer arm
FR2584451A1 (enrdf_load_stackoverflow) * 1985-06-21 1987-01-09 Apache Corp
US4822230A (en) * 1986-10-22 1989-04-18 Maritime Hydraulics A.S. Pipe handling apparatus
US4834604A (en) * 1987-10-19 1989-05-30 Lee C. Moore Corporation Pipe moving apparatus and method
US4951759A (en) * 1988-06-09 1990-08-28 Canrig Manufacturing Ltd. Oil well rig with pipe handling apparatus
WO1993022535A3 (en) * 1992-04-30 1993-12-23 Dreco Group Co Ltd Tubular handling system
US5458454A (en) * 1992-04-30 1995-10-17 The Dreco Group Of Companies Ltd. Tubular handling method
US6220807B1 (en) 1992-04-30 2001-04-24 Dreco Energy Services Ltd. Tubular handling system
US20030167623A1 (en) * 1998-02-14 2003-09-11 Weatherford/Lamb, Inc. Apparatus and method for handling of tubulars
WO1999041486A1 (en) * 1998-02-14 1999-08-19 Weatherford/Lamb, Inc. Apparatus and method for handling of tubulars
US6550128B1 (en) * 1998-02-14 2003-04-22 Weatherford/Lamb, Inc. Apparatus and method for handling of tubulars
US7036202B2 (en) 1998-02-14 2006-05-02 Weatherford/Lamb, Inc. Apparatus and method for handling of tubulars
US6609573B1 (en) * 1999-11-24 2003-08-26 Friede & Goldman, Ltd. Method and apparatus for a horizontal pipe handling system on a self-elevating jack-up drilling unit
WO2003060287A1 (en) 2001-12-31 2003-07-24 Maris International Limited Pipe handling apparatus
US6705414B2 (en) 2002-02-22 2004-03-16 Globalsantafe Corporation Tubular transfer system
US20030196791A1 (en) * 2002-02-25 2003-10-23 N-I Energy Development, Inc. Tubular handling apparatus and method
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FR2101238B1 (enrdf_load_stackoverflow) 1974-02-15
NL153971B (nl) 1977-07-15
FR2101238A1 (enrdf_load_stackoverflow) 1972-03-31
AU469791B2 (en) 1976-02-26
NL7110744A (enrdf_load_stackoverflow) 1972-02-08
GB1289807A (enrdf_load_stackoverflow) 1972-09-20
AU3172671A (en) 1973-02-01
JPS5114082B1 (enrdf_load_stackoverflow) 1976-05-07

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