GB2335960A - A release equipment for a drill string - Google Patents
A release equipment for a drill stringInfo
- Publication number
- GB2335960A GB2335960A GB9914900A GB9914900A GB2335960A GB 2335960 A GB2335960 A GB 2335960A GB 9914900 A GB9914900 A GB 9914900A GB 9914900 A GB9914900 A GB 9914900A GB 2335960 A GB2335960 A GB 2335960A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill string
- sleeve parts
- locking means
- release piece
- release
- 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.)
- Granted
Links
- 230000004913 activation Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
- E21B17/043—Threaded with locking means
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
A release piece for a drill string is adapted to disengage upon activation in connection with a bit stuck in the lower portion of the bore hole during drilling. An elongated tubular release piece (10a, 10b) is, at the ends (12a, 12b) thereof, formed to be coupled into the drill string, upstream the bit. The drill string release piece comprises two substantially coaxial sleeve parts (10a, 10b) disposed in the continuation of each other and screwable together, said sleeve parts (10a, 10b) internally being provided with axially directed locking means (16a, 16a', 16b, 16b'). An internal, axially displaceable locking device (18) has locking means (28', 28") capable of cooperating lockingly with said locking means (16a, 16a', 16b, 16b') of both sleeve parts (10a, 10b), the locking position being maintained by means of a spring (22). In a drill string release situation, the spring action is neutralized, the drill string, thereafter, being rotated in order to unscrew the two sleeve parts (10a, 10b) from each other, whereafter the drill string can be hauled up.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO970335A NO303351B1 (en) | 1997-01-27 | 1997-01-27 | Drill string release equipment |
PCT/NO1998/000012 WO1998032946A1 (en) | 1997-01-27 | 1998-01-14 | A release equipment for a drill string |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9914900D0 GB9914900D0 (en) | 1999-08-25 |
GB2335960A true GB2335960A (en) | 1999-10-06 |
GB2335960B GB2335960B (en) | 2001-03-07 |
Family
ID=19900298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9914900A Expired - Fee Related GB2335960B (en) | 1997-01-27 | 1998-01-14 | A release equipment for a drill string |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU5885998A (en) |
GB (1) | GB2335960B (en) |
NO (1) | NO303351B1 (en) |
WO (1) | WO1998032946A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0029097D0 (en) | 2000-11-29 | 2001-01-10 | B D Kendle Engineering Ltd | Dimple disconnect |
US7100696B2 (en) * | 2001-10-01 | 2006-09-05 | Weatherford/Lamb, Inc. | Disconnect for use in a wellbore |
NO318013B1 (en) | 2003-03-21 | 2005-01-17 | Bakke Oil Tools As | Device and method for disconnecting a tool from a pipe string |
NO339511B1 (en) * | 2013-11-28 | 2016-12-27 | 4Subsea As | Safety release device |
CN103924920B (en) * | 2014-04-24 | 2016-03-16 | 王岳 | Drilling tool is with brill safety device |
CN106869847A (en) * | 2015-12-11 | 2017-06-20 | 贵州高峰石油机械股份有限公司 | A kind of underground right-hand thread drilling tool Refloatation method and the back-off joint for being used |
WO2018140462A1 (en) * | 2017-01-24 | 2018-08-02 | Enventure Global Technology, Inc. | Hydraulically actuated safety sub |
WO2021097011A1 (en) * | 2019-11-14 | 2021-05-20 | Schlumberger Technology Corporation | Torque transfer system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE528255C (en) * | 1928-12-27 | 1931-06-26 | Doheny Stone Drill Co | Safety connection for pipe rods in deep boreholes with detachable locking device |
US3895829A (en) * | 1974-02-04 | 1975-07-22 | Halliburton Co | Releasable pipe connector |
EP0244194A2 (en) * | 1986-04-28 | 1987-11-04 | Mobil Oil Corporation | Anti-rotation tubular connection for flowlines or the like |
-
1997
- 1997-01-27 NO NO970335A patent/NO303351B1/en not_active IP Right Cessation
-
1998
- 1998-01-14 WO PCT/NO1998/000012 patent/WO1998032946A1/en active Application Filing
- 1998-01-14 GB GB9914900A patent/GB2335960B/en not_active Expired - Fee Related
- 1998-01-14 AU AU58859/98A patent/AU5885998A/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE528255C (en) * | 1928-12-27 | 1931-06-26 | Doheny Stone Drill Co | Safety connection for pipe rods in deep boreholes with detachable locking device |
US3895829A (en) * | 1974-02-04 | 1975-07-22 | Halliburton Co | Releasable pipe connector |
EP0244194A2 (en) * | 1986-04-28 | 1987-11-04 | Mobil Oil Corporation | Anti-rotation tubular connection for flowlines or the like |
Also Published As
Publication number | Publication date |
---|---|
GB2335960B (en) | 2001-03-07 |
WO1998032946A1 (en) | 1998-07-30 |
NO970335D0 (en) | 1997-01-27 |
NO970335A (en) | 1998-06-29 |
GB9914900D0 (en) | 1999-08-25 |
AU5885998A (en) | 1998-08-18 |
NO303351B1 (en) | 1998-06-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20160114 |