EP2999843A1 - Ensemble de mâchoires - Google Patents

Ensemble de mâchoires

Info

Publication number
EP2999843A1
EP2999843A1 EP14822585.7A EP14822585A EP2999843A1 EP 2999843 A1 EP2999843 A1 EP 2999843A1 EP 14822585 A EP14822585 A EP 14822585A EP 2999843 A1 EP2999843 A1 EP 2999843A1
Authority
EP
European Patent Office
Prior art keywords
lever arm
die holder
jaw assembly
gripping
arm pocket
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Withdrawn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
EP14822585.7A
Other languages
German (de)
English (en)
Inventor
William A. ZEPEDA
Philip Chase JOHNSON
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.)
Mccoy Global Inc
Original Assignee
Mccoy Global 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 Mccoy Global Inc filed Critical Mccoy Global Inc
Publication of EP2999843A1 publication Critical patent/EP2999843A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1261—Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in a radial plane
    • B23B31/1269—Details of the jaws
    • 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

Definitions

  • the present invention relates to a jaw assemblies for gripping tubulars.
  • Hydrocarbon wells are typically drilled to a selected depth in order to intersect a hydrocarbon bearing geological formation. While the depth of these formations is typically several thousands of feet, the practical manufactured length of pipe used for drilling and casing these wells is generally no more than forty feet. Therefore, it is necessary to construct the required long strings of pipe using short sections with threaded connections at each end.
  • Equipment used in the make up and breakout of drilling and casing tubulars include casing running tools, tongs and bucking units. Jaw assemblies in these tools grip the tubular and some cases, rotate the tubular to make up or break out the string.
  • the jaw assembly grip force is necessarily high, it is important that the tubular surface not become damaged by the gripping surfaces, or dies, or the jaw assembly. Such damage often occurs when the die surfaces do not properly contact the tubular surface, causing points of high force that tend to gouge the tubular surface, and points of no contact at all, resulting in incomplete gripping.
  • tubulars and couplings to be gripped are not perfectly circular and often have surface imperfections that can prevent full, even contact of the die surface with the tubular or coupling surface. Again poor contact in turn leads to improper gripping, possible slippage during make up and breakout operations and possible damage to the tubulars and couplings.
  • Some jaw designs have been created to allow movement of the die-carrying jaw on a pivot point that in turn pivots on geared sections of the jaw assembly.
  • a first edge of a die surface contacts the tubular first and then the jaw assembly pivots to make further contact between the die and the tubular.
  • Torque and force from the gripping and rotation of the tubular is transferred through the singular fulcrum of the pivot point to the make up or break out tool.
  • further jaws are effectively prevented from pivoting, and held into position by virtue of the positioning of the first two jaw assemblies.
  • a jaw assembly comprising a lever arm defining a lever arm pocket on a top surface thereof, said lever arm pocket having sides and a bottom face, a cam roller moveable along a cam surface and a die holder removably and pivotably received in the lever arm pocket and having a gripping surface for gripping the tubular, said die holder having sides and a base. Movement of the cam roller along the cam surface serves to pivot the die holder within the lever arm pocket.
  • Figure 1 is a perspective view of a detail of one embodiment of the jaw assembly of the present invention
  • Figure 2 is a side elevation view of one embodiment of the jaw assembly of the present invention.
  • Figure 3 is a bottom perspective view of one embodiment of the jaw assembly of the present invention.
  • Figure 4 is a top perspective view of one embodiment of the jaw assembly of the present invention. and; Figure 5 is a side elevation view of one embodiment of the jaw assembly of the present invention, showing the circular path of swivel movement of the die holder within the lever arm pocket;
  • Figure 6 is a sectional elevation view of one embodiment of the jaw assembly of the present invention on a cam surface of a gripping tool; and
  • Figure 7 is a sectional view of one example of a backup assembly, showing the jaw assembly of the present invention in a retracted position.
  • the jaw assemblies of the present invention are advantageously designed to make up or break out tubulars and couplings of a range of outside diameters (OD). They can be used in any number of tools including but not limited to casing running tools, tongs and bucking units, and collectively referred to as gripping tools for the purposes of the present invention.
  • a self-aligning jaw mechanism is preferably provided on each jaw assembly to compensate for irregularities in pipe size, shape and surface and also provide sufficient clearance when the jaws are retracted to accommodate a variety of tubular and coupling sizes.
  • the clearance provided by the present jaw assembly makes it possible to load couplings first into the gripping tool while still allowing adequate clearance for any misalignment.
  • the present jaw assembly 2 comprises a jaw roller 26 rotatably received in a lever arm 80. More preferably the jaw roller 26 is rotatably affixed to the lever arm 80 by means of a jaw pin 100 preferably retained by a retaining ring 110. An O-ring 112 is preferably further included to prevent ingress of debris between the jaw roller 26 and the lever arm 80.
  • the lever arm 80 further comprises a channel 82 that travels over cam surfaces 28 of a gripping tool.
  • a lever arm pocket 84 is formed on the lever arm 80 as well.
  • a die holder 86 is removably positioned within the lever arm pocket 84, and is preferably pivotably held in place by a retaining clip 98 or other suitable means known in the art.
  • the die holder 86 can be fitted with different sizes of dies 88 for contact with and gripping of tubulars 12 of different sizes to be made up or broken out.
  • the die holder 86 In an unengaged and neutral position, the die holder 86 preferably defaults to rest in a position in which both first end 90 and second end 92 of the die 88 protrude equally from the lever arm 80 into the central bore 14.
  • one or more spring plungers 96 and more preferably four spring plungers 96, one in each corner of a bottom face 102 of the lever arm pocket 84 serve to bias the die holder 86 in this neutral position.
  • a biasing means 94 is provided to urge one of either the first end 90 or the second end 92 of the die 88 towards the central bore 14, thereby causing a swivel movement of die holder 86 in the lever arm pocket 84.
  • the orientation of a slope of the cam surface 28 of the gripping tool and the protrusion of one end of the die 88 maximizes clearance in the bore 14 to accommodate tubulars 12 and couplings into the bore 14.
  • the present orientation of the die 88 when the jaw assembly 2 is in the retracted position provides maximum clearance between the die 88 and the tubular 12 to be inserted. This clearance allows for loading and unloading tubulars 12 in an automated process.
  • first and second ends 90, 92 are assigned as left and right ends respectively in the Figures, that the assignment of these ends is completely random and that in a different cam surface slope design, the second end 92 can just easily be the end to protrude without departing from the scope of the present invention.
  • the biasing means 94 takes the form of a free moving push rod that may protrude from the bottom surface 102 of the lever arm pocket 84 and into channel 82.
  • the push rod comes into contact with the cam surface 28 and as a result the push rod is pushed against a base 104 of the die holder 86 to actuate the swivel movement.
  • movement of the push rod serves to provide approximately 2" of diametric clearance for tubulars and couplings entering the machine.
  • the biasing means 94 loses contact with the cam surface 28, thereby removing any push against the second end 92 of the die 88 and allowing the die holder 86 to swivel back to its neutral position, aided by the bias of the spring plungers 96.
  • contact of the tubular 12 with the die holder 86 preferably overcomes the biasing action of the one or more spring plungers 96, to swivel and position the die holder 86 as needed to ensure full contact with and gripping of the tubular 12.
  • the swiveling movement of the die holder 86 in the lever arm pocket 84 is advantageous as it allows for better contact with the tubular or coupling in the presence of irregularities on the surface of the tubular 12 or coupling to be gripped.
  • the base 104 of the die holders 86 that contacts the bottom face 102 of the lever arm pocket 84 are each shaped to allow the die holder 86 to swivel within the lever arm pocket 84 to adjust to fit around the tubular 12 or coupling to be gripped. More preferably, the circular arc of swivel movement of the base 104 of the die holder 86 in the bottom face 102 of the lever arm pocket 84 is concentric to the circular arc of swivel movement of the sides of the die holder 86 within the sides of the lever arm pocket 84. The concentric
  • the sides and base 104 of the die holder 86 are always in contact with corresponding sides and bottom face 102 of the lever arm pocket 84, allowing for load from gripping and rotating the tubular 12 to be transmitted directly from the die face 88 to the lever arm 80 and the jaw assembly 2. More specifically, the sides of the die holder 86 transmit torque forces to the jaw assembly 2 while the base 104 transmits gripping force.
  • the jaw assemblies 2 are rotated along cam surfaces 28 to retract the jaw assemblies 2 out of central bore 14.
  • biasing means 94 makes contact with the cam surfaces 28 and causes end 90 of the dies 88 to protrude into a position where the largest clearance is created in bore 14, as described above with reference to the home position of the jaw assemblies 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

La présente invention concerne un ensemble de mâchoires, ledit ensemble de mâchoires comprenant un bras de levier définissant une poche de bras de levier sur sa surface supérieure, ladite poche de bras de levier comportant des côtés et une face inférieure, une came de verrouillage mobile le long d'une surface de came et un porte-matrice reçu de manière amovible et pivotante dans la poche de bras de levier et comportant une surface de saisie destinée à saisir le tubulaire, ledit porte-matrice comportant des côtés et une base. Un déplacement de la came de verrouillage le long de la surface de came sert à pivoter le porte-matrice à l'intérieur de la poche de bras de levier.
EP14822585.7A 2013-07-08 2014-04-24 Ensemble de mâchoires Withdrawn EP2999843A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361843686P 2013-07-08 2013-07-08
PCT/CA2014/000371 WO2015003241A1 (fr) 2013-07-08 2014-04-24 Ensemble de mâchoires

Publications (1)

Publication Number Publication Date
EP2999843A1 true EP2999843A1 (fr) 2016-03-30

Family

ID=52279245

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14822585.7A Withdrawn EP2999843A1 (fr) 2013-07-08 2014-04-24 Ensemble de mâchoires
EP14822932.1A Withdrawn EP2999844A1 (fr) 2013-07-08 2014-04-24 Appareil permettant de raccorder ou séparer des éléments tubulaires

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14822932.1A Withdrawn EP2999844A1 (fr) 2013-07-08 2014-04-24 Appareil permettant de raccorder ou séparer des éléments tubulaires

Country Status (3)

Country Link
EP (2) EP2999843A1 (fr)
CA (2) CA2917346A1 (fr)
WO (2) WO2015003241A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO342134B1 (en) * 2015-04-07 2018-03-26 Robotic Drilling Systems As Apparatus and method for gripping a tubular member
CN110541689B (zh) * 2019-09-23 2023-10-17 北京三叶西蒙科技有限公司 一种射孔枪接头、护帽拆卸装置及其拆卸装置的使用方法
CN111390539B (zh) * 2020-01-08 2021-05-25 吴立中 一种管拧机及其控制方法
CN115156886B (zh) * 2022-07-12 2023-09-08 西安航天精密机电研究所 一种全自动气动夹紧拧紧设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668689A (en) * 1947-11-07 1954-02-09 C & C Tool Corp Automatic power tongs
US2933961A (en) * 1957-10-28 1960-04-26 Orville A Adams Power operated pipe wrench
US3606664A (en) * 1969-04-04 1971-09-21 Exxon Production Research Co Leak-proof threaded connections
US4084453A (en) * 1976-03-30 1978-04-18 Eckel Manufacturing Co., Inc. Power tongs
US4437363A (en) * 1981-06-29 1984-03-20 Joy Manufacturing Company Dual camming action jaw assembly and power tong
US5819604A (en) * 1996-10-11 1998-10-13 Buck; David A. Interlocking jaw power tongs
US20040174163A1 (en) * 2003-03-06 2004-09-09 Rogers Tommie L. Apparatus and method for determining the position of the end of a threaded connection, and for positioning a power tong relative thereto
US7191686B1 (en) * 2006-02-01 2007-03-20 Frank's Casing Crew & Rental Tools, Inc. Method and apparatus for connecting and disconnecting threaded tubulars
US7975572B2 (en) * 2008-10-02 2011-07-12 Weatherford/Lamb, Inc. Methods and apparatus for make up and break out of tubular connections
CA2692043C (fr) * 2009-05-01 2015-07-14 Dan Dagenais Cle de devissage actionnee par un levier a came

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2015003241A1 *

Also Published As

Publication number Publication date
EP2999844A1 (fr) 2016-03-30
WO2015003241A1 (fr) 2015-01-15
WO2015003242A1 (fr) 2015-01-15
CA2917571A1 (fr) 2015-01-15
CA2917346A1 (fr) 2015-01-15

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