EP1042582B1 - Anordnung zum gewichtsausgleich - Google Patents

Anordnung zum gewichtsausgleich Download PDF

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Publication number
EP1042582B1
EP1042582B1 EP98966927A EP98966927A EP1042582B1 EP 1042582 B1 EP1042582 B1 EP 1042582B1 EP 98966927 A EP98966927 A EP 98966927A EP 98966927 A EP98966927 A EP 98966927A EP 1042582 B1 EP1042582 B1 EP 1042582B1
Authority
EP
European Patent Office
Prior art keywords
string
tubulars
tubular
elevator
primary elevator
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
EP98966927A
Other languages
English (en)
French (fr)
Other versions
EP1042582A1 (de
Inventor
Leendert Spreij
Steven Lee Albright
Jean Donald Bearb
Frederick Marion Leicht
Michael Warren Hayes
John Cleveland Birdwell
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.)
Weatherford Lamb Inc
Original Assignee
Weatherford Lamb 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
Priority claimed from US08/998,461 external-priority patent/US6000472A/en
Application filed by Weatherford Lamb Inc filed Critical Weatherford Lamb Inc
Publication of EP1042582A1 publication Critical patent/EP1042582A1/de
Application granted granted Critical
Publication of EP1042582B1 publication Critical patent/EP1042582B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • 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
    • E21B19/02—Rod or cable suspensions
    • E21B19/06—Elevators, i.e. rod- or tube-gripping devices
    • 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
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder

Definitions

  • This invention relates to an apparatus and a method for facilitating connection or disconnection of a tubular to or from a string of tubulars, and is particularly, but not exclusively for facilitating the connection or disconnection of casing to or from a string of casing using a top drive or a travelling block of a derrick of an oil or gas well.
  • the device enables the weight of a single joint to be compensated for, such that when the joint is lowered or raised to or from a string, the effective weight of the joint is zero.
  • a pneumatic bellows or the like allows small adjustments to be made to allow the joint of casing to be made up to the string of casing.
  • the device also allows over compensation to be made, such that upon disconnection of a joint from the string of casing, the joint springs from the string of casing.
  • the device depends from the primary elevator of the rig, with a single joint elevator depending therefrom.
  • the present invention provides an apparatus for facilitating the connection or disconnection of a tubular to or from a string of tubulars, which apparatus comprises a weight compensating device which can be suspended from a travelling block or a top drive or a swivel, characterised in that said apparatus further comprises a member which can support a primary elevator and which can, in use, be raised and lowered by said weight compensating device to enable a tubular to be raised and lowered with respect to a string of tubulars and which can move to a load bearing position in which it can raise and lower said string of tubulars.
  • said member comprises a stem arranged substantially in parallel with said weight compensating device.
  • said stem is rigid.
  • said stem comprises an end stop which rests on the top of said apparatus when said member is in its load bearing position.
  • said stem comprises a yoke for attachment of the primary elevator.
  • said weight compensating device comprises at least one piston and cylinder.
  • said at least one piston and cylinder is pneumatically operated.
  • said primary elevator is rotatable with respect to said weight compensating device.
  • said apparatus further comprises a motor for rotating said primary elevator.
  • said apparatus further comprises a brake for inhibiting rotation of said primary elevator.
  • said weight compensating device is shear pinned to said primary elevator.
  • said apparatus is provided with said primary elevator.
  • the present invention also provides a method for facilitating the connection of a tubular to a string of tubulars using an apparatus in accordance with the present invention, said method comprising the steps of positioning a tubular in the primary elevator of said apparatus, lowering said primary elevator to bring said tubular into contact with a string of tubulars held in a spider therebelow, and connecting said tubular to said string of tubulars, and lowering said string of tubulars on said primary elevator.
  • the present invention further provides a method for facilitating the disconnection of a tubular from a string of tubulars using an apparatus in accordance with the present invention, said method comprising the steps of positioning the primary elevator on a string of tubulars, lifting said string of tubulars from a well bore, securing said string of tubulars in a spider, disconnecting a tubular, the weight compensating device of said apparatus compensating or overcompensating for the weight of said tubular, and raising the tubular clear of said string of tubulars
  • an elevator provided with a bearing to facilitate rotation between said elevator and an item held in said elevator.
  • FIG. 1 there is shown a prior art arrangement for facilitating the connection of a tubular to a string of tubulars, the arrangement including a single joint compensator J.
  • the single joint compensator J depends from a primary elevator (not shown) which is attached by bails (not shown) to a top drive (not shown) or a travelling block (not shown) of a derrick (not shown).
  • a single joint elevator E depends from the single joint compensator J via a swivel T and cables C.
  • the single joint elevator E is shown supporting a joint of casing P that is to be connected the top of a string of casing N held in the slips (not shown) in the floor of the rig.
  • a tong O is located below the single joint elevator E and is positioned about the joint of casing P.
  • the tong O is used to rotate the joint of casing to facilitate connection with the string of casing N.
  • the single joint compensator J is controlled from a control console S which receives compressed air from a rig air supply A.
  • the control console S is located on the floor of the rig nearby.
  • An air hose H extends from the control console S to the single joint compensator J.
  • FIG. 1 there is shown an apparatus in accordance with the invention generally identified by reference numeral 1 retaining a joint of casing JC.
  • the apparatus 1 comprises a supporting bracket 2 having two lifting lugs 3 fixed thereto for attachment to bails (not shown) of a top drive or travelling block.
  • the supporting bracket 2 is provided with a plate 4 which is attached thereto by bolts 5 with a spacer 6 arranged therebetween.
  • a central hole 7 runs through the plate 4, the spacer 6 and the supporting bracket 2.
  • a lower plate 8 is welded to the bottom of the supporting bracket 2.
  • Bushings 9 and 10 are provided in the supporting bracket 2 to facilitate rotation of a stem 11 provided in the central hole 7.
  • piston and cylinders 12, 13, 12' and 13' are spaced about the plate 4 and attached thereto by lugs 14 and 15 via pins 16 and 17.
  • the lower ends of the piston and cylinders 12, 13, 12' and 13' are attached to a lower support 18 via lugs 19, 20, 19' and 20' and shear pins 21, 22, 21' and 22'.
  • the shear pins 21, 22, 21' and 22' are provided such that in the event of overloading the piston and cylinders 12, 13, 12' and 13', the shear pins 21, 22, 21' and 22' will shear releasing the piston and cylinders 12, 13, 12' and 13' from connection between the supporting bracket 2 and the lower support 18.
  • the lower support 18 comprises a plate 23 which is provided with a central hole 24 therethrough for stem 11 to pass through.
  • a rotatable plate 25 is fast with the stem 11 and is seated on bearings 26.
  • the bearings 26 are supported by the lower support 18.
  • the stem 11 is provided with an upper stop 27. Upon full extension of said piston and cylinders 12, 13, 12' and 13', the upper stop 27 engages the plate 4 and transfers any weight from the piston and cylinder 8 and 9 thereto. The weight held by the stem 11 is transferred through the plate 4, the spacer 6 to the supporting bracket 2 and to the bails (not shown).
  • the lower end of the stem 11 extends below the lower support 18 and is provided with a yoke 28 for retaining the arms 29 and 30 of a primary elevator 31.
  • a motor 32 is mounted to the underside of plate 18 to rotate the stem 11.
  • a shield 33 protects the motor 32.
  • a brake 34 is provided for engaging the stem 11 to inhibit rotation thereof.
  • the stroke length of the piston and cylinders is preferably twice the length of the thread of the casing being connected. About 36cm (14 inches) is appropriate for threads of 13cm to 18cm (5 to 7 inches) in length which allows 18cm (7 inches) of upward and 18cm (7 inches) of downward movement. The stroke is commensurate with the length of the piston which may be chosen as desired.
  • Figure 2B shows a scale 35 marked on to the piston of the piston and cylinder 13 to give an indication to the operator of the stroke position.
  • the scale could be in the form of markers, indicia, numerals, or stripes.
  • an electronic sensor or other position indicator could be used.
  • Another alternative would be to measure the quantities of fluid in the cylinder to determine stroke position.
  • FIG. 6A to 6H there is shown the apparatus 1 in use.
  • the apparatus 1 is hung from a travelling block TB (or a top drive) by bails B.
  • the bails B are connected to the lugs 3 of the supporting bracket 2.
  • the joint JC For connection of a joint JC of casing to a string ST of casing, the joint JC is placed in the primary elevator 31 (Fig. 6A-B).
  • the piston and cylinders 12, 13, 12' and 13' are now set to compensate for the weight of the joint JC by use of a control console CC. Once set, the same setting may be used for subsequent joints of the same weight.
  • the travelling block TB (or top drive) is then lowered so that the pin on the lower end of the joint JC enters the box of the upper end of the string ST of casing (Fig. 6C-D). Since the weight of the joint JC is compensated for, the threads of the pin and box are unlikely to be damaged if they collide.
  • a stabbing guide may be used during this procedure to guide the pin into the box.
  • a motor 32 may now be used to rotate the joint JC in order to threadly mate the joint JC with the string ST.
  • a power tong O is then used to torque the connection up to the required torque. Make-up can hence be conducted with the weight of the joint J being compensated for (Fig. 6F).
  • the piston and cylinders 12, 13, 12' and 13' are now extended and the apparatus 1 raised until stop 27 of the stem 11 abuts the plate 4 of the supporting bracket 2 (Fig 6G-H) and slightly raises the string ST.
  • the spider SP in the floor of the rig is then released.
  • the entire string ST is held by the apparatus 1.
  • the weight of the string ST is taken through the yoke 28, the stem 11 and the supporting bracket 2.
  • the string ST is then lowered by the travelling block TB (or top drive) into the well bore WL.
  • the travelling block TB is lowered by operation of a draw works DW via cable CS running over a crown block CB located at the top of a rig RG.
  • the spider SP is then reapplied to the string ST.
  • Primary elevator 31 is then removed from the string ST.
  • the apparatus 1 is raised by the travelling block TB (or top drive) in readiness for a subsequent joint.
  • the primary elevator 31 For disconnection of a joint JC from a string ST, the primary elevator 31 is placed around the top of the string ST. The piston and cylinders 12, 13, 12' and 13' are extended until the stop 27 of the stem 11 abuts the plate 4 of the supporting bracket 2. The apparatus 1 is now raised until the primary elevator 31 abuts the box of the top joint JC of the string ST. The spider SP in the floor of the rig is released. The entire weight of the string ST is taken by the apparatus 1. The weight of the string ST is taken through the yoke 28, the stem 11 and the supporting bracket 2. The travelling block TB (or top drive) is raised, lifting the string ST until a joint JC is (or two or three joints are) above the spider SP (Fig 6G-H).
  • the spider SP is reapplied to the string ST.
  • the elevator 31 is lowered until the spider SP takes the full weight of the string ST.
  • the piston and cylinders 12, 13, 12' and 13' are now set to compensate for slightly greater than the expected weight of the joint JC, (or the weight of two or three joints as required).
  • a power tong O is used to break the connection between the joint JC and the string ST.
  • the power tong O is then removed.
  • the stem 11 may now be rotated by the motor 32 until the joint JC is free from the string ST.
  • the piston and cylinders 12, 13, 12' and 13' are over compensating for the weight of the joint JC and hence the joint JC is lifted from the string ST. Damping is provided by the piston and cylinders 12, 13, 12' and 13' so that the joint JC does not "bounce" back on to the top of the string ST.
  • the joint JC is removed from the primary elevator 31 and placed in a rack using pipe handling equipment (not shown) .
  • the apparatus 1 is now ready for the disconnection of subsequent joints from the string ST.
  • FIG. 4A and 4B there is shown schematically, an apparatus 100.
  • the apparatus 100 is attached to a top drive D by a shackle 101 and bails 102.
  • a safety chain CH is provided between the shackle 101 and the apparatus 100.
  • a shear pin 103 or other device links the apparatus 100 to the shackle 101.
  • the safety chain CH will prevent the apparatus 100 from falling on to the floor of the rig.
  • the shear pin 103 may be designed to shear at 2.7 tonnes (3 tons). This arrangement protects the apparatus 100 from being subjected to the entire weight of the string if the piston and cylinders fail to extend to allow transfer of weight through the stem.
  • the chain should be designed to fail at three times the expected load.
  • a control console CC is provided for controlling the apparatus 101.
  • the apparatus 100 is linked to the control console by control line H.
  • Figures 4C to 4F show four arrangements of piston and cylinders.
  • Figure 4C shows two piston and cylinders 104 and 105 in parallel with each other.
  • Figure 4D shows on piston and cylinder 106.
  • Figure 4E shows three piston and cylinders 107, 108 and 109 in parallel with each other.
  • Figure 4F shows four piston and cylinders 110, 111, 112 and 113 in parallel with each other.
  • the piston and cylinders have a bore of 182cm 2 (28.27 square inches); a rod area of 9.58cm 2 (1.485 square inches); an effective area (bore minus rod) of 172cm 2 (26.8 square inches) and is able to support about 1.1 tonnes (2500 pounds).
  • the pressure of the pneumatic fluid inside the cylinder is about 6.4 Bar (93.3psi).
  • the pressure required to support two tons is about 5.5 Bar (80psi).
  • the embodiment of Fig. 4C can support 5 tons at 6.4 Bar (93.3psi) and 4 tons at 5.5 Bar (80psi).
  • the embodiment of Fig. 4E can support 7.5 tons at 6.4 Bar (93.3psi) and 6 tons at 5.5 Bar (80psi).
  • Fig. 4F can support 10 tons at 6.2 Bar (90psi) and 8 tons at 5.5 Bar (80psi). If a multi piston and cylinder apparatus is used, and light tubulars are to be handled, only one or more piston and cylinders need be used. The other piston and cylinders can vent through vent V.
  • Figure 4G shows schematically a circuit diagram of a linked piston and cylinder arrangement generally identified by reference numeral 200.
  • Flow lines 201 and 202 link the two lower interiors of the cylinder 203, 204 and 205, 206 of the cylinders 110, 111, 112 and 113.
  • a flow line 207 links the two flow lines 201 and 202.
  • the flow line 207 leads to a control console CS.
  • Pistons 208, 209, 210 and 211 are connected to piston rods 212, 213, 214 and 215 a portion of which extends below a plate 216 on to which the cylinders are mounted.
  • An upper plate may be arranged on top of the cylinders for stability.
  • a manifold may be used for providing each cylinder with equal quantities of fluid for even actuation thereof.
  • Each cylinder may be provided with an isolation valve for selectively venting each cylinder.
  • FIGS 5A-5C show an embodiment of a control console CS for use with the system of Figure 4A.
  • the control console SC includes a fluid hose reel 301 on a base 302, a make-up pressure indicator 303, a break-out pressure indicator 304, a make-up regulator pressure control know 305, a make-up relief valve control knob 306, and a break-out regulator pressure control knob 307.
  • Figures 7A-7C show an elevator 400 according to the present invention with a body 401 with parts 402 and 403 hinged together by hinge 404 for selective emplacement around and removal from a tubular, releasable locking apparatus 405, a bore 406 through the body, lifting ears 407 on the body, a shoulder 408 around the top of the bore 406, and a roller bearing apparatus 409 with halves 410 and 411 on the shoulder 408 each with a plurality of roller bearings 412.
  • a collar or other appropriate part of a tubular may rest and move on the roller bearings 412 and thus rotation of the collar (and of, therefore, the tubular and other tubulars connected to and beneath it) is facilitated.
  • the primary elevator 31 may have such roller bearing apparatus or, alternatively, any suitable known roller and/or bearing devices or mechanisms may be used on the shoulder 408 or on a top portion of the elevator 400.
  • Such bearing and/or roller apparatus may also be provided for multiple (dual, quad, etc.) string elevators.
  • piston and cylinders used, which may be hydraulic or pneumatic, in this embodiment, however any number could be used including one, two, three, four, five or six.
  • a bellows air spring may be used instead of the piston and cylinders.
  • the motor 32 can be used to rotate the entire string for purposes such as facilitating insertion of tubulars into the well bore.
  • the stem could be an enlarged piston rod of a piston and cylinder of the weight compensating device.
  • An end stop may be provided on the end of the piston rod to transfer the weight of a string of tubulars to a support when the piston is in a fully extended position.
  • the stem could be a chain.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Types And Forms Of Lifts (AREA)
  • Tyre Moulding (AREA)
  • Paper (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Claims (15)

  1. Vorrichtung, um das Verbinden oder Trennen eines Rohrabschnitts mit oder von einem Strang von Rohrabschnitten zu erleichtern, wobei die Vorrichtung eine Gewichtsausgleichseinrichtung (12, 13, 12', 13') umfaßt, die von einem Flaschenzugblock (TB) oder einem Aufsatzantrieb (TD) oder einer Drehbefestigung hängen gelassen werden kann, dadurch gekennzeichnet, daß die Vorrichtung außerdem ein Element (11) umfaßt, das einen primären Gestängeanheber (31) tragen kann und das bei der Anwendung durch die Gewichtsausgleichseinrichtung (12, 13, 12', 13') gehoben und gesenkt werden kann, um ein Heben und Senken eines Rohrabschnitts (JC) im Verhältnis zu einem Strang von Rohrabschnitten (ST) zu ermöglichen, und das sich in eine lasttragende Position bewegen kann, in der es den Strang von Rohrabschnitten heben und senken kann.
  2. Vorrichtung nach Anspruch 1, bei der das Element (11) einen Schaft (11) umfaßt, der wesentlich parallel zu der Gewichtsausgleichseinrichtung (12, 13, 12', 13') angeordnet ist.
  3. Vorrichtung nach Anspruch 2, bei welcher der Schaft (11) starr ist.
  4. Vorrichtung nach Anspruch 3, bei welcher der Schaft (11) einen Endanschlag (27) umfaßt, der oben auf der Vorrichtung aufliegt, wenn sich das Element in seiner lasttragenden Position befindet.
  5. Vorrichtung nach Anspruch 2, 3 oder 4, bei welcher der Schaft (11) ein Joch (28) zur Befestigung des primären Gestängeanhebers (31) umfaßt.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der die Gewichtsausgleichseinrichtung (12, 13, 12', 13') wenigstens einen Kolben und Zylinder umfaßt.
  7. Vorrichtung nach Anspruch 6, bei welcher der wenigstens eine Kolben und Zylinder (12, 13, 12', 13') pneumatisch betrieben wird.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, bei welcher der primäre Gestängeanheber (31) im Verhältnis zu der Gewichtsausgleichseinrichtung (12, 13, 12', 13') gedreht werden kann.
  9. Vorrichtung nach Anspruch 8, die außerdem einen Motor (32) zum Drehen des primären Gestängeanhebers (31) umfaßt.
  10. Vorrichtung nach Anspruch 8 oder 9, die außerdem eine Bremse (34) umfaßt, um die Drehung des primären Gestängeanhebers (31) zu hemmen.
  11. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der die Gewichtsausgleichseinrichtung (12, 13, 12', 13') mit Abscherbolzen an dem primären Gestängeanheber (31) befestigt ist.
  12. Vorrichtung nach einem der vorhergehenden Ansprüche, die mit dem primären Gestängenaheber (31) versehen ist.
  13. Verfahren, um unter Verwendung einer Vorrichtung nach Anspruch 12 das Verbinden eines Rohrabschnitts mit einem Strang von Rohrabschnitten zu erleichtern, wobei das Verfahren die folgenden Schritte umfaßt: Positionieren eines Rohrabschnitts im primären Gestängeanheber der Vorrichtung, Senken des primären Gestängeanhebers, um den Rohrabschnitt in Kontakt mit einem Strang von Rohrabschnitten zu bringen, der unter demselben in einer Spinne gehalten wird, und Verbinden des Rohrabschnitts mit dem Strang von Rohrabschnitten und Senken des Strangs von Rohrabschnitten an dem primären Gestängeanheber.
  14. Verfahren, um unter Verwendung einer Vorrichtung nach Anspruch 12 das Trennen eines Rohrabschnitts von einem Strang von Rohrabschnitten zu erleichtern, wobei das Verfahren die folgenden Schritte umfaßt: Positionieren des primären Gestängeanhebers auf einem Strang von Rohranschnitten, Heben des Strangs von Rohrabschnitten aus einem Bohrloch, Befestigen des Strangs von Rohrabschnitten in einer Spinne, Trennen eines Rohrabschnitts, wobei die Gewichtsausgleichseinrichtung der Vorrichtung das Gewicht des Rohrabschnitts ausgleicht oder überkompensiert, und Heben des von dem Strang von Rohrabschnitten getrennten Rohrabschnitts.
  15. Vorrichtung nach Anspruch 12, bei welcher der primäre Gestängeanheber mit einem Lager (409) versehen ist, um eine Drehung zwischen dem Gestängeanheber (400) und einem in dem Gestängeanheber (400) gehaltenen Gegenstand zu erleichtern.
EP98966927A 1997-12-24 1998-12-28 Anordnung zum gewichtsausgleich Expired - Lifetime EP1042582B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US99815297A 1997-12-24 1997-12-24
US998152 1997-12-24
US08/998,461 US6000472A (en) 1996-08-23 1997-12-26 Wellbore tubular compensator system
PCT/EP1998/008580 WO1999034088A1 (en) 1997-12-24 1998-12-28 Weight compensation device
US998461 2001-11-29

Publications (2)

Publication Number Publication Date
EP1042582A1 EP1042582A1 (de) 2000-10-11
EP1042582B1 true EP1042582B1 (de) 2002-12-04

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Application Number Title Priority Date Filing Date
EP98966927A Expired - Lifetime EP1042582B1 (de) 1997-12-24 1998-12-28 Anordnung zum gewichtsausgleich

Country Status (6)

Country Link
EP (1) EP1042582B1 (de)
AU (1) AU741280B2 (de)
CA (1) CA2316307C (de)
DE (1) DE69809966T2 (de)
NO (1) NO321865B1 (de)
WO (1) WO1999034088A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6056060A (en) * 1996-08-23 2000-05-02 Weatherford/Lamb, Inc. Compensator system for wellbore tubulars
DE602007001152D1 (de) * 2006-01-11 2009-07-09 Weatherford Lamb Gestellausgleicher
NO336048B1 (no) * 2010-06-24 2015-04-27 Scan Tech Produkt As Anordning ved elevatorbøyle og framgangsmåte for bruk av samme
US9045952B2 (en) * 2011-12-08 2015-06-02 Tesco Corporation Tubular compensator system and method
US20130284433A1 (en) * 2012-04-27 2013-10-31 Canrig Drilling Technology Ltd. Force application reduction employing actuator
US9725968B2 (en) 2013-07-15 2017-08-08 Canrig Drilling Technology Ltd. Force application reduction employing actuator and thrust bearing
BR112020011319A2 (pt) * 2017-12-07 2020-11-17 Weatherford Technology Holdings, Llc sistema de compensação tubular

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454194A (en) * 1921-08-29 1923-05-08 Houston Pump & Supply Company Elevator
US1842638A (en) * 1930-09-29 1932-01-26 Wilson B Wigle Elevating apparatus
US2488107A (en) * 1945-08-17 1949-11-15 Abegg & Reinhold Co Drill pipe spinning device
US2712932A (en) * 1951-08-20 1955-07-12 Jay P Gould Tool supporting device
NO154703C (no) * 1983-11-11 1986-12-03 Maritime Hydraulics As Anordning ved roerhaandteringsinnretning.
CA1239634A (en) * 1984-07-27 1988-07-26 William D. Stringfellow Weight compensating elevator
US4736807A (en) * 1986-07-07 1988-04-12 Exxon Production Research Company Apparatus for rotating and reciprocating well pipe
US4813498A (en) * 1988-03-03 1989-03-21 National-Oilwell Active counterbalance for a power swivel during well drilling
US5390568A (en) * 1992-03-11 1995-02-21 Weatherford/Lamb, Inc. Automatic torque wrenching machine

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Publication number Publication date
CA2316307C (en) 2007-05-22
NO321865B1 (no) 2006-07-17
DE69809966T2 (de) 2003-07-17
DE69809966D1 (de) 2003-01-16
CA2316307A1 (en) 1999-07-08
AU2615299A (en) 1999-07-19
AU741280B2 (en) 2001-11-29
EP1042582A1 (de) 2000-10-11
WO1999034088A1 (en) 1999-07-08
NO20002455L (no) 2000-08-09
NO20002455D0 (no) 2000-05-11

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