SU1834351A1 - Stationary wrench for drilling equipment - Google Patents
Stationary wrench for drilling equipmentInfo
- Publication number
- SU1834351A1 SU1834351A1 SU4746792/03A SU4746792A SU1834351A1 SU 1834351 A1 SU1834351 A1 SU 1834351A1 SU 4746792/03 A SU4746792/03 A SU 4746792/03A SU 4746792 A SU4746792 A SU 4746792A SU 1834351 A1 SU1834351 A1 SU 1834351A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- screwing
- wrench
- power
- unscrewing
- power cylinders
- Prior art date
Links
Abstract
FIELD: screwing and unscrewing of threaded connections of drilling tubes and casings. SUBSTANCE: wrench has locking mechanism with carriage mounted on power column, screwing-unscrewing mechanism connected with stabilizing locking mechanism, which has power cylinders with stabilizing moment relative to screwing center. Power cylinders are positioned at different sides with respect to longitudinal diametric plane of tube clamping part of wrench. Wrench is further provided with oscillating telescopic support having device responsive to torque variations, auxiliary hydraulic cylinder mounted on oscillating telescopic support and cantilevered fingers rigidly fixed on screwing-unscrewing mechanism. Power cylinders are formed as spring-loaded casings with immovable plungers. Device responsive to torque variations is formed as double-sided dynamometer-type detector engageable with cantilevered fingers. Screwing- unscrewing mechanism is balanced with respect to its own center of weight by power cylinder casing springs and with respect to screwing center by working agent pressure in power cylinder cavities. Supporting surfaces of cantilevered fingers are made spherical. Power cylinders are positioned within tube clamping part of wrench. EFFECT: reduced wear of threaded connections by compensating lateral and angular shears of tubes to be screwed, improved maintenance and increased safety of work. 3 cl, 5 dwg
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4746792/03A SU1834351A1 (en) | 1989-09-04 | 1989-09-04 | Stationary wrench for drilling equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4746792/03A SU1834351A1 (en) | 1989-09-04 | 1989-09-04 | Stationary wrench for drilling equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1834351A1 true SU1834351A1 (en) | 1996-08-10 |
Family
ID=60541654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU4746792/03A SU1834351A1 (en) | 1989-09-04 | 1989-09-04 | Stationary wrench for drilling equipment |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1834351A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10329857B2 (en) | 2006-09-08 | 2019-06-25 | Nabors Drilling Technologies Usa, Inc. | Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings |
-
1989
- 1989-09-04 SU SU4746792/03A patent/SU1834351A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10329857B2 (en) | 2006-09-08 | 2019-06-25 | Nabors Drilling Technologies Usa, Inc. | Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings |
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