EP0629260A1 - Mechine utilisee comme clef permettant d'appliquer automatiquement un couple de torsion - Google Patents

Mechine utilisee comme clef permettant d'appliquer automatiquement un couple de torsion

Info

Publication number
EP0629260A1
EP0629260A1 EP93918760A EP93918760A EP0629260A1 EP 0629260 A1 EP0629260 A1 EP 0629260A1 EP 93918760 A EP93918760 A EP 93918760A EP 93918760 A EP93918760 A EP 93918760A EP 0629260 A1 EP0629260 A1 EP 0629260A1
Authority
EP
European Patent Office
Prior art keywords
tong
automatic torque
power tong
support member
wrenching machine
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.)
Withdrawn
Application number
EP93918760A
Other languages
German (de)
English (en)
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 EP0629260A1 publication Critical patent/EP0629260A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • E21B19/16—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 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
    • E21B19/16—Connecting or disconnecting pipe couplings or joints

Definitions

  • AUTOMATIC TORQUE WRENCHING MACHINE This invention relates to automatic torque wrench ⁇ ing machines. Automatic torque wrenching machines are now being used on off-shore drilling platforms to obviate the need for skilled personnel in the highly hazardous area of the rig floor.
  • an automatic torque wrenching machine comprising a back-up tong and a power tong movable towards and away from said back-up tong, characterized in that said automatic torque wrenching machine further comprises a pneumatic operator for varying the distance between said power tong and said back-up tong, and means for control ⁇ ling the pressure of gas in said pneumatic operator.
  • said automatic torque wrenching machine comprises a frame having a support member, said power tong is supported from said support member, and said pneumatic operator is operable between said frame and said support member.
  • said back-up tong is suspended from said power tong.
  • a further problem is ensuring that the automatic torque wrenching machine is able to move in a generally horizontal plane with respect to the back-up tong to facilitate connection and disconnection.
  • said power tong is supported by three or more ties which allow said power tong to move in a generally horizontal plane.
  • the ties may be attached to a common fitting on said support member. However, they are preferably sup- ported at separate and distinct locations on said sup ⁇ port member, preferably substantially directly above their points of attachment to the power tong. Position ⁇ ing the ties at the separate and distinct locations has the advantage that, in use, the ties inhibit the power tong turning as it applies torque to the casing.
  • said ties comprise ropes, wire cables and/or rods.
  • said ties also comprise springs so that said power tong is capable of movement in a horizontal plane.
  • Figure 1 shows a simplified side view of one embo- diment of an automatic torque wrenching machine in accordance with the invention
  • FIG 2 is a side view of a second embodiment of an automatic torque wrenching machine in accordance with the invention
  • Figure 3 is a top plan view of the automatic torque wrenching machine shown in Figure 2;
  • Figure 4 is a view taken in the direction of the arrows IV-IV in Figure 2.
  • the automatic torque wrenching machine 1 comprises a frame 2 having a support member 3 which can be raised or lowered with respect to said frame 2 by admitting or withdrawing air to a bellows 4 via an air line 5.
  • a tong assembly 6 comprising a power tong 7 and a back-up tong 8 is suspended from the support member 3 by four ties 9 which each include a length of wire rope 10 and a spring 11.
  • the frame 2 is mounted on rails 12.
  • casing is being lowered into a well.
  • the lower casing 13 is held by slips (not shown).
  • the upper casing 14 is then lowered using a block and tackle (not shown) until the threaded pin on the upper casing 14 just enters the socket on the lower casing 13.
  • the upper casing 14 is held in axial align ⁇ ment with the lower casing 13 by positioning means (not shown) on the drilling derrick.
  • Frame 2 is then moved to the left on rails 12 until the lower casing 13 is within the back-up tong 8 and the upper casing 14 is within the power tong 7.
  • the back-up tong 8 is then actuated to grip the lower casing 13.
  • Air is then admitted through airline 5 to raise the support member 3.
  • the support member 3 raises the power tong 7 relative to the back-up tong 8 which is then actuated to grip the upper casing 14.
  • the support at the top of the upper casing 14 is then relaxed so that a substantial proportion of the entire weight of the upper casing 14 is supported by the power tong 7.
  • Air is then released from the bellows 4 via the airline 5 to a predetermined pressure to allow the threaded male portion (the "pin") on the lower end of the upper casing 14 to advance the threaded socket on the upper end of the lower casing 13.
  • the power tong 7 is actuated to rotate the upper casing 14.
  • the thread on the upper casing 14 engages the thread on the socket of the lower casing 13 the upper casing 14 is pulled downwardly.
  • the threaded connection is made smoothly and efficiently.
  • the predetermined pressure in the bellows 4 is set so that in the event that the pin does not mesh with the threads of the socket the downward force of the upper casing 14 is insufficient to appreciably damage the threads of the socket.
  • the automatic torque wrenching machine 101 comprises a frame 102 which is provided with a support member 103 having a horizon ⁇ tal portion 103h and a vertical portion 103v.
  • the sup ⁇ port member 103 can be raised and lowered relative to the frame 102 by means of an hydraulically operated piston and cylinder assembly 104a and a bellows 104 which is connected to a source of compressed air by an air line (not shown).
  • a power tong 107 forming part of a tong assembly 106, is suspended from the horizontal portion 103h of the support member 103 by four ties 109 each comprising wire ropes 110 which are separated from the support member 103 at their upper ends by springs 111.
  • the power tong 107 is also connected to the verti ⁇ cal portion 103v of the support member 103 by two double acting hydraulic piston and cylinder assemblies 126 each of which is provided with a plate spring packing 127 as more fully described in our PCT patent publication WO 92/18743.
  • the ends of the double acting hydraulic piston and cylinder assemblies 126 are pivotally connec ⁇ ted to the power tong 107 and the vertical portion 103v of the support member respectively. It will be apprecia ⁇ ted that whilst the power tong 107 is physically atta ⁇ ched to the support member 103 it can, for all practical purposes, be regarded as free floating.
  • the support member 103 is mounted on a torque member 125 comprising a beam of generally "I" shape cross-section having a massive central section provided with four flanges 120.
  • the torque member 125 supports the hydraulic piston and cylinder assembly 104a which in turn supports the bellows 104.
  • the support member 103 is vertically movable with respect to the torque member 125 but is constrained against pivotal movement relative thereto.
  • the back-up tong 108 is also slidably mounted on the torque member 125 and can be raised and lowered by a hydraulic jack 129.
  • Both the power tong 107 and the back-up tong 108 are provided with doors which can be opened to permit the entrance of a casing.
  • the door of back-up tong 108 can be opened and shut by a hydraulic piston and cylin ⁇ der assembly 122 whilst the door 128 of the power tong 107 is actuable by a similar piston and cylinder assemb ⁇ ly (not shown).
  • This arrangement has the disadvantage that the back-up tong 108 is NOT free floating.
  • it has the advantage that the back-up tong 108 can be used to support a certain length of casing without the need for slips. In addition, in many instances there is little to be gained by making the back-up tong free floating.
  • the door 128 on the power tong 107 and the door on the back-up tong 108 are opened and the frame 102 advanced on rails 112 so that the casing is received in the power tong 107 and the back-up tong 108.
  • the doors are then closed and the power tong 107 and the back-up tong 108 actuated to grip the upper casing and the lower casing respectively.
  • Air is then admitted to bellows 104 to provide an up thrust to the upper casing.
  • Hydraulic motor 124 is then actuated to unscrew the joint.
  • the power tong 107 tends to pivot anti-clockwise as viewed in Figure 3. This movement is resisted inter alia by the ties 109.
  • the joint eventually separates the upper casing is immediately lifted clear of the socket in the lower casing by the bellows 104 to inhibit the thread of the upper casing swinging into the lower casing and damaging the thread on the pin.
  • the bellows 104 is supported on a hydraulic piston and cylinder 104a operable to set a datum level for the support member 3.
  • the power tong of an automatic torque wrenching machine will weigh between 2 and 3 tonnes and be capable of handling pipes with diameters of at least 200mm, more usually at least 300mm and almost invariably up to 500mm.
  • the bellows could be re ⁇ placed by any other form of pneumatic operator, for example a pneumatically operated piston and cylinder assembly.

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)
  • Load-Engaging Elements For Cranes (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

Une machine utilisée comme clef permettant d'appliquer automatiquement un couple de torsion (1) comprend un cadre (2) ayant un élément de support (3) qui peut être monté ou descendu en permettant à de l'air d'entrer dans un soufflet pneumatique (4) et d'en sortir. Un système de pinces de serrage (6) est suspendu à l'élément de support (3) à l'aide de quatre attaches (9) comprenant des câbles métalliques (10), dont chacun est pourvu d'un ressort (11). Le soufflet pneumatique (4) permet de connecter et de déconnecter des conduites avec des contraintes minimales sur des filetages. En plus, les attaches permettent au système de serrage (6) de flotter dans un plan sensiblement horizontal par rapport au cadre (2).
EP93918760A 1992-03-11 1993-02-02 Mechine utilisee comme clef permettant d'appliquer automatiquement un couple de torsion Withdrawn EP0629260A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB929205211A GB9205211D0 (en) 1992-03-11 1992-03-11 Automatic torque wrenching machine
GB9205211 1992-03-11
PCT/EP1993/000224 WO1993018276A1 (fr) 1992-03-11 1993-02-02 Mechine utilisee comme clef permettant d'appliquer automatiquement un couple de torsion

Publications (1)

Publication Number Publication Date
EP0629260A1 true EP0629260A1 (fr) 1994-12-21

Family

ID=10711851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93918760A Withdrawn EP0629260A1 (fr) 1992-03-11 1993-02-02 Mechine utilisee comme clef permettant d'appliquer automatiquement un couple de torsion

Country Status (5)

Country Link
EP (1) EP0629260A1 (fr)
CA (1) CA2131537A1 (fr)
GB (1) GB9205211D0 (fr)
NO (1) NO943255D0 (fr)
WO (1) WO1993018276A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1064107C (zh) * 1997-07-25 2001-04-04 兰州兰新设备有限公司 一种动力大钳
GB2356591B (en) * 1999-11-26 2003-10-15 Weatherford Lamb Wrenching tong
GB2370246B (en) 2000-11-21 2004-06-23 Weatherford Lamb Power tong frames
GB2371509B (en) 2001-01-24 2004-01-28 Weatherford Lamb Joint detection system
NO20011324L (no) * 2001-03-15 2002-09-16 Maritime Hydraulics As Gripeklo for rörvarer
US7114235B2 (en) 2002-09-12 2006-10-03 Weatherford/Lamb, Inc. Automated pipe joining system and method
US7413398B2 (en) * 2003-04-01 2008-08-19 Mccoy Corporation Power tong positioner
NO20055576A (no) 2005-11-25 2007-01-08 V Tech As Fremgangsmåte og anordning for å posisjonere en krafttang ved en rørskjøt
NO324688B1 (no) * 2006-03-03 2007-12-03 Nat Oilwell Norway As Anordning ved verktoy for sammen- eller fraskruing av ror
WO2008022425A1 (fr) 2006-08-24 2008-02-28 Canrig Drilling Technology Ltd. Clé dynamométrique pour matériel tubulaire de champ de pétrole
WO2008022424A1 (fr) 2006-08-24 2008-02-28 Canrig Drilling Technology Ltd. Clé dynamométrique pour matériel tubulaire de champ de pétrole
CA2661405C (fr) 2006-08-25 2013-01-08 Canrig Drilling Technology Ltd. Procedes et appareils permettant l'etablissement automatise d'une cle dynamometrique pour champ de petrole aux fins de branchement et de debranchement de colonnes de tubage
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
WO2013036139A2 (fr) * 2011-09-09 2013-03-14 National Oilwell Varco Norway As Système de pointage à utiliser dans le domaine des champs de pétrole et procédé de fonctionnement dudit système de pointage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500708A (en) * 1967-05-01 1970-03-17 Wilson John H Automated pipe tongs
US4170908A (en) * 1978-05-01 1979-10-16 Joy Manufacturing Company Indexing mechanism for an open-head power tong
US4402239A (en) * 1979-04-30 1983-09-06 Eckel Manufacturing Company, Inc. Back-up power tongs and method
US4348920A (en) * 1980-07-31 1982-09-14 Varco International, Inc. Well pipe connecting and disconnecting apparatus
US4603464A (en) * 1985-03-11 1986-08-05 Hughes Tool Company Stand jumping and stabbing guide device and method
NO163973C (no) * 1988-04-19 1990-08-15 Maritime Hydraulics As Momenttanganordning.
GB8828084D0 (en) * 1988-12-01 1989-01-05 Weatherfor U S Inc Apparatus for connecting & disconnecting threaded members
GB9107788D0 (en) * 1991-04-12 1991-05-29 Weatherford Lamb Power tong for releasing tight joints

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9318276A1 *

Also Published As

Publication number Publication date
NO943255L (no) 1994-09-02
CA2131537A1 (fr) 1993-09-16
NO943255D0 (no) 1994-09-02
WO1993018276A1 (fr) 1993-09-16
GB9205211D0 (en) 1992-04-22

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