EP1475513B1 - Cle a tiges - Google Patents

Cle a tiges Download PDF

Info

Publication number
EP1475513B1
EP1475513B1 EP04103600A EP04103600A EP1475513B1 EP 1475513 B1 EP1475513 B1 EP 1475513B1 EP 04103600 A EP04103600 A EP 04103600A EP 04103600 A EP04103600 A EP 04103600A EP 1475513 B1 EP1475513 B1 EP 1475513B1
Authority
EP
European Patent Office
Prior art keywords
tong
tubular
wrenching
pinion
tongs
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
EP04103600A
Other languages
German (de)
English (en)
Other versions
EP1475513A1 (fr
Inventor
Bernd-Georg Pietras
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
Application filed by Weatherford Lamb Inc filed Critical Weatherford Lamb Inc
Publication of EP1475513A1 publication Critical patent/EP1475513A1/fr
Application granted granted Critical
Publication of EP1475513B1 publication Critical patent/EP1475513B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
    • E21B19/164—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe motor actuated
    • 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

Definitions

  • This invention relates to wrenching tongs and other power tongs.
  • An elevator is connected to the top of the new section or stand and the whole pipe string lifted slightly to enable the slips of the spider to be released.
  • the whole pipe string is then lowered until the top of the section is adjacent the spider whereupon the slips of the spider are re-applied, the elevator disconnected and the process repeated.
  • a power tong to torque the connection up to a predetermined torque in order to make this connection.
  • the power tong is located on the platform, either on rails, or hung from a derrick on a chain.
  • An active (or wrenching) tong supplies torque to the section of pipe above the threaded connection, while a passive (or back up) tong supplies a reaction torque below the threaded connection.
  • the back up tong clamps the pipe below the threaded connection, and prevents it from rotating. This clamping can be performed mechanically, hydraulically or pneumatically.
  • the wrenching tong clamps the upper part of the connection and is driven so that it supplies torque for a limited angle.
  • This power tong arrangement is also used to torque up connections between other tubulars, for example casing and tubing.
  • the wrenching tong is driven hydraulically.
  • One or two hydraulic cylinders drive the tong through a small angle, typically in the region of 25°, depending on the tong design. Due to the geometric configuration normally used, the torque output of the tong changes as a sine function of the angle driven, which results in a reduction of torque output across the drive angle of up to 15%.
  • WO 93/18276 discloses an apparatus for applying torque to a first tubular relative to a second tubular.
  • the apparatus comprises first and second tongs for gripping the first and second tubulars, respectively.
  • GB 2128526 discloses a tong for gripping a tubular, driven by a pinion and gear.
  • GB 1215967 discloses a tool secured in rotary table slips, and tongs for coupling and uncoupling tubulars.
  • US 2 566 561 discloses a tool according to the preamble of claim 1.
  • apparatus for applying torque to a first tubular relative to a second tubular
  • the apparatus comprising a first tong for gripping the first tubular and a second tong for gripping the second tubular, the first tong being provided with teeth around a peripheral surface thereof, the second tong being provided with at least one pinion, the pinion meshing with the teeth in such a way that the first tong and the second tong can be rotated relative to one another when the pinion is rotated, and characterised in that bearings supported on resilient means are provided between the first tong and the second tong to support one tong on top of the other tong.
  • the first tong is a back-up tong and the second tong is a wrenching tong.
  • Both tongs are preferably substantially cylindrical, and an axial passage is preferably provided therethrough for receiving tubulars.
  • a passage is preferably provided from a peripheral edge to the axial passage of each tong to allow the introduction of tubulars into the axial passage.
  • the pinion is preferably located at or near the periphery of the second tong.
  • a motor may be provided on the second tong and coupled to the or each pinion.
  • the second tong is preferably provided with two pinions, although in another embodiment it may be provided with only one.
  • the pinions are preferably located at or near the periphery of the second tong spaced by substantially 180° about the longitudinal axis of the tong. In another embodiment they may be spaced by substantially 120° about the longitudinal axis of the tong.
  • the first tong comprises a plurality of hydraulically driven clamping jaws for gripping the first tubular and the second tong comprises a plurality of hydraulically driven clamping jaws for gripping the second tubular.
  • Each jaw may be equipped with two or more dies, and is preferably attached to hydraulic driving means via a spherical bearing, although the jaw may be an integral part of the hydraulic driving means.
  • the bearings supported on resilient means facilitate relative axial movement of the first and second tongs.
  • a method of applying torque to a first tubular relative to a second tubular comprising: clamping the first tubular in a first tong; clamping the second tubular in a second tong; rotating a pinion connected to the second tong and which meshes with teeth provided around a peripheral surface of the first tong so as to rotate the first tong relative to the second tong; and characterised by supporting one tong on top of the other tong using bearings, supported on resilient means, provided between the first tong and the second tong.
  • FIGS 1 and 2 show an arrangement of a composite wrenching tong and back-up tong.
  • a wrenching tong 1 is generally in the form of a disc with an opening 2 through the centre thereof for receiving a stand of drill pipe (not shown), and a recess 3 cut from the edge to the opening 2 at the centre.
  • the wrenching tong 1 is provided with two pinion drives 4 arranged opposite each other at the periphery of the disc, equally spaced either side of the recess 3.
  • Each pinion drive comprises a drive motor 5, drive shaft 6, and pinion 7 attached to the drive shaft 6.
  • a back-up tong 11 is located beneath the wrenching tong 1.
  • the back-up tong is generally in the form of a disc with similar dimensions to the wrenching tong 1.
  • the back-up tong is also provided with an opening 12 through the centre and a recess 13 from the edge to the opening at the centre.
  • the opening 12 and recess 13 correspond to the opening 2 and recess 3 of the wrenching tong when the back-up tong 11 and the wrenching tong 1 are correctly aligned.
  • a plurality of guide rollers 10 or other guide elements are spaced around the edge of the wrenching tong 1 in order to maintain the alignment of the wrenching tong 1 with the back-up tong 11.
  • a gear 14 is provided around the periphery of the back-up tong 11, broken by the recess 13.
  • the gear 14 meshes with the pinions 7 attached to the motors 5 on the wrenching tong, so that when the drive motors 5 drive the drive shafts 6 and gears 7, the wrenching tong 1 rotates relative to the back-up tong 11.
  • the angle of rotation is limited by the recess 13 of the back up tong.
  • FIG 3 shows a back-up tong 11 before the wrenching tong is placed on top of it.
  • the back-up tong 11 has a plurality of roller bearings 21, upon which the wrenching tong 1 is designed to be placed.
  • the roller bearings 21 are supported by resilient means such as springs, elastic material or hydraulic/pneumatic cylinders, in order to support the wrenching tong during wrenching.
  • the stands will move axially relative to one another as the connection is tightened.
  • the wrenching tong must follow the axial movement of the top stand during one wrenching cycle. This axial travel length depends on the pitch of the thread.
  • Three clamping jaws 8 equipped with dies 9 are located inside each of the wrenching tong 1 and back-up tong 11. These are hydraulically driven for clamping the drill pipe stand in place in the centre of the wrenching tong.
  • the hydraulic power supply may be provided by hoses (not shown).
  • FIG 4 shows the clamping mechanism of the back-up tong 11.
  • Three hydraulic pistons 16, comprising piston rods 17 and chambers 18, are located inside the casing of the back-up tong 11.
  • Each piston rod 17 has an end 19 which is secured to the outside edge of the back-up tong 11.
  • the jaw 8 containing two dies 9 with teeth (not shown) is fixed to the chamber 18 by a spherical bearing 20.
  • each drill pipe stand is clamped by three jaws and six dies at the joint.
  • the spherical bearings 20 enable the jaws and dies to match the pipe surfaces closely, resulting in a low penetration depth of the teeth of the dies into the pipe surface, and thus prolonging the life of the drill pipe.
  • the wrenching tong has a similar clamping jaw design, as shown in Figure 5 .
  • Figure 6 shows the wrenching tong 1 and back-up tong 11 supported by a C-frame 22 for handling at the rig.
  • the C-frame 22 is in turn fixed in a frame 23 for handling the equipment on tracks at the rig floor.
  • a drill pipe spinner 24 is mounted on the C-frame above the tongs for rotating a drill pipe stand at high speed.
  • the recesses 3 and 13 in the wrenching 1 and back-up 11 tongs are aligned (the tongs may already be in this configuration following the removal of the tongs from a previous section of tubing).
  • Two stands of drill pipe 25,26 are then introduced into the openings 2,12 in the wrenching and back-up tongs 1,11, respectively, through the recesses 3,13, and the lower stand 26 is clamped in position in the back-up tong 11.
  • the upper stand 25 is introduced into the drill pipe spinner 24, and rotated at high speed in order to pretighten the threaded connection. The final high torque will be applied by the wrenching tong 1.
  • the upper stand 25 is now clamped in position in the opening 2 through the wrenching tong 1.
  • the pinion drives 4 are then driven to torque the connection between the stands 25,26 until the connection is fully tightened or until one of the pinion drives 4 is at the edge of the recess 13, at which stage the wrenching tong 1 is at one end of its possible arc of travel relative to the back-up tong 11.
  • the maximum wrenching angle which can be reached in one cycle in the embodiment shown is +/-75°. If necessary, the upper stand 25 can then be released from the wrenching tong 1, the tong returned to its original position, and the torquing process repeated.
  • Figure 8 shows a similar arrangement of a composite wrenching tong and back-up tong to that described above. However, in this case only one pinion drive 4 is used, which increases the possible wrenching angle to 300°.
  • Figure 9 shows another similar arrangement, with two pinion drives 4 being used as in Figures 1 to 7 . This time the pinion drives 4 are not opposite each other, but spaced 120° each side of the recess 3. This gives the advantage of the torque and control provided by two drives, but allows a higher wrenching angle than the arrangement of Figure 1 .
  • the maximum wrenching angle in this embodiment will be in the region of 210°.
  • the torque can be monitored by measuring the reaction torque at each drive by means of a load cell, or by measuring the pressure of the drive motor.
  • the preferred embodiments show an arrangement whereby the pinion drives are mounted on the wrenching tong and the gear is mounted on the back-up tong.
  • the arrangement could be the other way round with the pinion drives mounted to the back-up tong and the large gear mounted on the wrenching tong. Such an arrangement is illustrated in Figure 10 .
  • the wrenching tong could be provided with a gear, and the pinion drives mounted on the frame 24.
  • Hydraulic clamping cylinders are shown, but the tong could clamp the drill pipe stands by any known means.
  • the preferred embodiments show one or two pinion drives, but more could be used if arranged in a suitable configuration.
  • FIG 11 illustrates in partial section a modified back-up tong 40 which may replace the back-up tong 11 of the embodiment of Figure 1 to 9 .
  • the modified tong 40 has only two jaws 41 associated with respective clamping arrangements 42.
  • Each arrangement 42 is held in place within the main body 43 of the tong 40 by a set of four "pendulum" bolts 44.
  • a clamping arrangement 42 associated with four pendulum bolts 44 is illustrated in more detail in Figure 12 from which it can be seen that each bolt comprises a cylinder cut in half along its longitudinal axis to provide a flat surface and a rounded surface.
  • each bolt 44 abuts the side of the clamping arrangement 42, whilst the rounded side is located in a rounded recess 45 provided in the side of the main body 43 opposed to the clamping arrangement. It will be appreciated that as the bolts 44 are able to rotate within their respective recesses in the tong body 43, each clamping arrangement 42 may pivot slightly about its centre. This allows the jaws 41 to conform to the outer surface of a tubular to be clamped when the tubular is for example not perfectly cylindrical.
  • FIG 13 illustrates apparatus which can be used in association with a tong arrangement 49 to connect and disconnect a tool such as a drill bit to and from a length of tubular such as a drill pipe.
  • the apparatus comprises a basket 50 which is arranged in use to be placed on the floor of a drilling rig.
  • the basket 50 has an opening in the top thereof for receiving a tool 51 which is to be connected to a length of tubular 52.
  • the opening has a shape which is complimentary to the shape of the tool 51 such that the tool is held securely in an upright position and rotation of the tool within the basket 50 is prevented.
  • slots 53 Two opposed sides of an upper plate of the basket 50 are provided with slots 53. These slots 53 are shaped to receive locking members 54 which project downwardly from the lower surface of the back-up tong 55 of the tong arrangement. The operation to connect a tool will now be described.
  • the tool 51 is first located in the basket 50.
  • the length of tubular 52 is moved to a position over the tool ( Figure 14 ) and is lowered to bring the box of the tubular into engagement with the externally threaded coupling of the tool 51.
  • the tong arrangement is brought up to the tubular 52 with the jaws of the rotary and back-up tongs being fully opened, and the tong is placed around the tubular 52.
  • the tong arrangement is then lowered within its frame, to a position in which the locking members 54 are received by the respective receiving slots 53 of the basket 50. In this position, the basket is locked to the back-up tong.
  • the jaws of the rotary tong are then clamped against the tubular 52 and the rotary tong rotated, relative to the back-up tong, to tighten the threaded joint ( Figure 15 ).
  • the jaws of the rotary tong are then released, and the tong arrangement withdrawn from around the tubular.
  • the tubular and the connected tool can then be lifted clear of the basket 50.
  • the tool 51 may be disconnected from the tubular 52 by carrying out the same operation but in reverse.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Coating Apparatus (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Claims (19)

  1. Dispositif destiné à appliquer un couple à un premier élément tubulaire (26) par rapport à un deuxième élément tubulaire (25), le dispositif comprenant une première clé à tiges (11) pour saisir le premier élément tubulaire, et une deuxième clé à tiges (1) pour saisir le deuxième élément tubulaire ;
    la première clé à tiges comportant des dents (14) autour de sa surface périphérique, la deuxième clé à tiges comportant au moins un pignon (7), le pignon s'engrenant dans les dents de sorte que la première clé à tiges et la deuxième clé à tiges peuvent être tournées l'une par rapport à l'autre lors de la rotation du pignon ; et
    caractérisé en ce que des paliers (21) supportés sur des moyens élastiques sont agencés entre la première clé à tiges (11) et la deuxième clé à tiges (1) pour supporter une clé à tiges au-dessus de l'autre clé à tiges.
  2. Dispositif selon la revendication 1, dans lequel la première clé à tiges (11) est une clé auxiliaire, la deuxième clé à tiges (1) étant une clé de serrage.
  3. Dispositif selon la revendication 1 ou 2, dans lequel le pignon ou chaque pignon (7) est agencé au niveau de la périphérie de la deuxième clé à tiges (1) ou près de celle -ci.
  4. Dispositif selon la revendication 1, 2 ou 3, dans lequel la première clé à tiges (11) est pratiquement cylindrique.
  5. Dispositif selon l'une quelconque des revendications précédentes, dans lequel la deuxième clé à tiges (1) est pratiquement cylindrique.
  6. Dispositif selon l'une quelconque des revendications précédentes, dans lequel chacune des première et deuxième clés à tiges (11, 1) comporte un passage axial (12, 2) la traversant, pour recevoir un élément tubulaire.
  7. Dispositif selon la revendication 6, dans lequel un passage (13, 3) est formé du bord vers le passage axial (12, 2) de chacune des première et deuxième clés à tiges (11, 1) pour permettre l'introduction d'un élément tubulaire dans le passage axial de chacune des première et deuxième clés à tiges.
  8. Dispositif selon l'une quelconque des revendications précédentes, dans lequel un moteur (5) est agencé sur la deuxième clé à tiges (1) et accouplé au pignon ou à chaque pignon (7).
  9. Dispositif selon l'une quelconque des revendications précédentes, dans lequel la deuxième clé à tiges (1) comporte deux pignons (7).
  10. Dispositif selon la revendication 9, dans lequel les pignons (7) sont agencés au niveau de la périphérie de la deuxième clé à tiges (1) ou près de celle-ci, et sont espacés d'environ 180° autour de l'axe longitudinal de la clé à tiges.
  11. Dispositif selon la revendication 9, dans lequel les pignons (7) sont agencés au niveau de la périphérie de la deuxième clé à tiges (1) ou près de celle-ci, et sont espacés d'environ 120° autour de l'axe longitudinal de la clé à tiges.
  12. Dispositif selon l'une quelconque des revendications 1 à 8, dans lequel la deuxième clé à tiges (1) comporte un seul pignon (7).
  13. Dispositif selon l'une quelconque des revendications précédentes, dans lequel la première clé à tiges (11) comprend plusieurs mâchoires de serrage à entraînement hydraulique (8) pour saisir le premier élément tubulaire.
  14. Dispositif selon l'une quelconque des revendications précédentes, dans lequel la deuxième clé à tiges (1) comprend plusieurs mâchoires de serrage à entraînement hydraulique (8) pour saisir le deuxième élément tubulaire.
  15. Dispositif selon la revendication 13 ou 14, dans lequel chaque mâchoire (8) est équipée de deux matrices (9) ou plus.
  16. Dispositif selon la revendication 13, 14 ou 15, dans lequel chaque mâchoire (8) est fixée sur des moyens d'entraînement hydrauliques (18) par l'intermédiaire d'un palier sphérique (20).
  17. Dispositif selon la revendication 13, 14 ou 15, dans lequel la première clé à tiges (11) et la deuxième clé à tiges (1) comprennent chacune plusieurs moyens d'entraînement hydrauliques, chaque moyen d'entraînement hydraulique comprenant une tige de piston (17) et une chambre de piston (18), la mâchoire (8) faisant partie intégrante des moyens d'entraînement hydrauliques, les matrices (9) étant placées dans des poches dans la chambre de piston.
  18. Dispositif selon l'une quelconque des revendications précédentes, destiné à l'assemblage des tubes de production de fond.
  19. Procédé d'application d'un couple à un premier élément tubulaire (26) par rapport à un deuxième élément tubulaire (25), le procédé comprenant les étapes ci-dessous :
    serrage du premier élément tubulaire dans une première clé à tiges (11) ;
    serrage du deuxième élément tubulaire dans une deuxième clé à tiges (1) ;
    rotation d'un pignon (7) connecté à la deuxième clé à tiges qui s'engrene dans des dents (14) agencées autour d'une surface périphérique de la première clé à tiges, pour faire tourner la première clé à tiges par rapport à la deuxième clé à tiges ; et
    caractérisé par le fait d'avoir une clé à tiges supportant l'autre clé à tiges par l'intermédiaire de paliers (21) supportés sur des moyens élastiques agencés entre la première clé à tiges (11) et la deuxième clé à tiges (1).
EP04103600A 1999-11-26 2000-11-17 Cle a tiges Expired - Lifetime EP1475513B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9927825A GB2356591B (en) 1999-11-26 1999-11-26 Wrenching tong
GB9927825 1999-11-26
EP00976168A EP1232323B1 (fr) 1999-11-26 2000-11-17 Cle a tiges

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP00976168A Division EP1232323B1 (fr) 1999-11-26 2000-11-17 Cle a tiges

Publications (2)

Publication Number Publication Date
EP1475513A1 EP1475513A1 (fr) 2004-11-10
EP1475513B1 true EP1475513B1 (fr) 2008-07-16

Family

ID=10865094

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00976168A Expired - Lifetime EP1232323B1 (fr) 1999-11-26 2000-11-17 Cle a tiges
EP04103600A Expired - Lifetime EP1475513B1 (fr) 1999-11-26 2000-11-17 Cle a tiges

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00976168A Expired - Lifetime EP1232323B1 (fr) 1999-11-26 2000-11-17 Cle a tiges

Country Status (7)

Country Link
EP (2) EP1232323B1 (fr)
AU (1) AU772533B2 (fr)
CA (1) CA2389449C (fr)
DE (1) DE60014955D1 (fr)
GB (1) GB2356591B (fr)
NO (2) NO336474B1 (fr)
WO (1) WO2001038688A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6814149B2 (en) 1999-11-26 2004-11-09 Weatherford/Lamb, Inc. Apparatus and method for positioning a tubular relative to a tong
US7114235B2 (en) 2002-09-12 2006-10-03 Weatherford/Lamb, Inc. Automated pipe joining system and method
CN101529046B (zh) 2006-08-24 2015-09-16 坎里格钻探技术有限公司 油田管式扭矩扳手
WO2008022424A1 (fr) 2006-08-24 2008-02-28 Canrig Drilling Technology Ltd. Clé dynamométrique pour matériel tubulaire de champ de pétrole
CN101528420B (zh) 2006-08-25 2013-01-02 坎里格钻探技术有限公司 用于对管柱进行上扣和卸扣的自动化油田扭矩扳手的方法和设备
US8074537B2 (en) 2006-09-08 2011-12-13 Canrig Drilling Technology Ltd. Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings
DE102008012667B4 (de) 2008-03-05 2014-06-26 Volkswagen Ag Frontenmodul für ein Kraftfahrzeug sowie Verfahren zur Vormontage desselben
NO332054B1 (no) * 2008-06-05 2012-06-11 Norwegian Hard Rock Drilling As Anordning ved mekanisert skruenøkkel
WO2016074060A1 (fr) * 2014-11-13 2016-05-19 2056203 Ontario Inc. Ensemble clé à tuyau de forage pouvant être actionné de manière hydraulique
WO2016187702A1 (fr) * 2015-05-27 2016-12-01 Miva Engineering Ltd. Clé dynamométrique de vissage
US20170314349A1 (en) * 2016-04-29 2017-11-02 Tesco Corporation Top drive powered differential speed rotation system and method
NL2021418B1 (en) * 2018-08-03 2020-02-12 Itrec Bv Power Tong
CN109986491A (zh) * 2019-04-30 2019-07-09 山西建设投资集团有限公司 用于快速拆装的圆形扳手
CN114233217A (zh) * 2021-12-28 2022-03-25 江苏如东金友机械有限公司 一种磁力无压痕多用液压钳

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB638635A (en) * 1946-06-28 1950-06-14 Vladimir Edelberg Screwing and unscrewing tongs particularly for drilling-pipe and drilling-rod joints
US2566561A (en) * 1946-06-28 1951-09-04 Edelberg Vladimir Screwing and unscrewing tongs, particularly for drilling pipe joints
US3163221A (en) * 1961-01-03 1964-12-29 Shell Oil Co Underwater manipulator for wells
GB1100794A (en) * 1966-03-21 1968-01-24 Cicero Columbus Brown C O Brow Reversing tool for screwing-up and unscrewing well pipes
GB1215967A (en) * 1967-12-04 1970-12-16 Byron Jackson Inc Well pipe tongs
US4442892A (en) * 1982-08-16 1984-04-17 Domenico Delesandri Apparatus for stabbing and threading a safety valve into a well pipe
DE3234027C1 (de) * 1982-09-14 1984-01-19 Christensen, Inc., 84115 Salt Lake City, Utah Vorrichtung zum Kontern und Brechen von Gewindeverbindungen
US5092399A (en) * 1990-05-07 1992-03-03 Master Metalizing And Machining Inc. Apparatus for stabbing and threading a drill pipe safety valve
GB9205211D0 (en) * 1992-03-11 1992-04-22 Weatherford Lamb Automatic torque wrenching machine

Also Published As

Publication number Publication date
AU1404801A (en) 2001-06-04
NO20150916A1 (no) 2002-07-03
EP1475513A1 (fr) 2004-11-10
WO2001038688A1 (fr) 2001-05-31
CA2389449C (fr) 2007-08-07
EP1232323A1 (fr) 2002-08-21
GB9927825D0 (en) 2000-01-26
DE60014955D1 (de) 2004-11-18
NO20021924D0 (no) 2002-04-24
NO20021924L (no) 2002-07-03
GB2356591A (en) 2001-05-30
CA2389449A1 (fr) 2001-05-31
NO336474B1 (no) 2015-08-31
AU772533B2 (en) 2004-04-29
GB2356591B (en) 2003-10-15
EP1232323B1 (fr) 2004-10-13

Similar Documents

Publication Publication Date Title
US7861618B2 (en) Wrenching tong
EP1475513B1 (fr) Cle a tiges
US6705405B1 (en) Apparatus and method for connecting tubulars using a top drive
EP0917615B1 (fr) Mecanisme de vissage/devissage d'elements de tubage
US6814149B2 (en) Apparatus and method for positioning a tubular relative to a tong
EP2761121B1 (fr) Entraînement simultané de serrage et de couple
US7188548B2 (en) Adapter frame for a power frame
US20150315858A1 (en) Apparatus and method for connecting components
US7707913B2 (en) Method of disconnecting a pipe length
CA2547944C (fr) Cle a tiges
AU2008201170B2 (en) Power tong

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040729

AC Divisional application: reference to earlier application

Ref document number: 1232323

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB NL

17Q First examination report despatched

Effective date: 20050404

AKX Designation fees paid

Designated state(s): NL

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17Q First examination report despatched

Effective date: 20050404

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 1232323

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): NL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090417

REG Reference to a national code

Ref country code: NL

Ref legal event code: SD

Effective date: 20150318

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20151110

Year of fee payment: 16

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20161201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161201