GB638635A - Screwing and unscrewing tongs particularly for drilling-pipe and drilling-rod joints - Google Patents
Screwing and unscrewing tongs particularly for drilling-pipe and drilling-rod jointsInfo
- Publication number
- GB638635A GB638635A GB10774/47A GB1077447A GB638635A GB 638635 A GB638635 A GB 638635A GB 10774/47 A GB10774/47 A GB 10774/47A GB 1077447 A GB1077447 A GB 1077447A GB 638635 A GB638635 A GB 638635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tongs
- jaws
- rings
- joint
- ring
- 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
Links
- 238000000926 separation method Methods 0.000 abstract 2
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
Landscapes
- 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)
Abstract
638,635. Making and breaking screwed joints. EDELBERG, V. April 22, 1947, No. 10774. Convention date, June 28, 1946. [Class 83 (iii)] In screwing and unscrewing tongs for drill rods &c., having two superimposed annular members 5, 6 surrounding the two parts of the joint and connected together by means which drive them in opposite directions, a set of jaws 9 is articulated on each of the annular members, means are provided for tightening the jaws on to the two parts of the joint and for transmitting to the jaws the drive imparted to the annular members, and means are provided for varying the spacing between the annular members according to the height of the thread of the joint. The driving device may be separate from, or carried by, the tongs. In the form shown, the tongs rotate on a plate 1 which is carried from the substructure of the rotary table by means of fluid-pressure pistons 3 which allow for adjustment as to height. The pulley rings 5, 6 are freely rotatable on a median body 4 formed by two hollowed plates 16, 17 joined by springs 24, 25 and rods and sockets 26, 27 which allow separation of the plates 16, 17 according to the height of the thread of the joint. Each ring 5, 6 has pivots 7 for arms 8 ending in spring-centred pivoted jaws 9 which grip the tube 10, the arms 8 being operated by links 19 pivoted at 18 on controlling members 12, 13 carrying circular casings 14, 15 engaging the rings 5, 6 and the plates 16, 17. Slight rotation of the members 12, 13 in opposite directions by means of spring-set handles 21 brings the two sets of jaws 9 into wedging and driving engagement with the two ends of the tube 10. The rings 5, 6 are connected by an endless cable 36 with a turn-buckle for taking up slack, and by an ordinary anchored cable 35, respectively, to upper and lower drums driven by an electric motor, on the same platform as the tongs, through a differential so as to develop the same circumferential pull. When the motor is first started, the cable 35 is stretched and tightens the ring 6 on the tube 10. By progressively stretching the loose part of the cable 36 the ring 5 is rotated in the opposite direction to the ring 6, and the torque on the two rings 5, 6 increases equally until the joint is broken. Rapid unscrewing then follows under reduced torque. In a modified form, the tongs carry three groups of double electric motors, and' separation of the rings 5, 6 is effected by a double circular cam between them.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR638635X | 1946-06-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB638635A true GB638635A (en) | 1950-06-14 |
Family
ID=8996140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10774/47A Expired GB638635A (en) | 1946-06-28 | 1947-04-22 | Screwing and unscrewing tongs particularly for drilling-pipe and drilling-rod joints |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB638635A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3129013A (en) * | 1960-05-02 | 1964-04-14 | Benny L Thompson | Power unit assembly |
GB2356591A (en) * | 1999-11-26 | 2001-05-30 | Weatherford Lamb | Apparatus suitable for use as a wrenching tool |
WO2016089216A1 (en) * | 2014-12-02 | 2016-06-09 | Robotic Drilling Systems As | Gripper with spinning means |
-
1947
- 1947-04-22 GB GB10774/47A patent/GB638635A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3129013A (en) * | 1960-05-02 | 1964-04-14 | Benny L Thompson | Power unit assembly |
GB2356591A (en) * | 1999-11-26 | 2001-05-30 | Weatherford Lamb | Apparatus suitable for use as a wrenching tool |
GB2356591B (en) * | 1999-11-26 | 2003-10-15 | Weatherford Lamb | Wrenching tong |
WO2016089216A1 (en) * | 2014-12-02 | 2016-06-09 | Robotic Drilling Systems As | Gripper with spinning means |
US10370913B2 (en) | 2014-12-02 | 2019-08-06 | Nabors Lux 2 Sarl | Gripper with spinning means |
US11313184B2 (en) | 2014-12-02 | 2022-04-26 | Canrig Robotic Technologies As | Gripper with spinning means |
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