FR2258515B1 - - Google Patents
Info
- Publication number
- FR2258515B1 FR2258515B1 FR7402088A FR7402088A FR2258515B1 FR 2258515 B1 FR2258515 B1 FR 2258515B1 FR 7402088 A FR7402088 A FR 7402088A FR 7402088 A FR7402088 A FR 7402088A FR 2258515 B1 FR2258515 B1 FR 2258515B1
- Authority
- FR
- France
- 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
Classifications
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- 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
- E21B4/00—Drives for drilling, used in the borehole
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- 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
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
-
- 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
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7402088A FR2258515A1 (en) | 1974-01-22 | 1974-01-22 | Transmission for underground drilling motor - with axially displaceable coupling for locking the motor stator and rotor to release a jammed drill bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7402088A FR2258515A1 (en) | 1974-01-22 | 1974-01-22 | Transmission for underground drilling motor - with axially displaceable coupling for locking the motor stator and rotor to release a jammed drill bit |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2258515A1 FR2258515A1 (en) | 1975-08-18 |
FR2258515B1 true FR2258515B1 (en) | 1976-11-26 |
Family
ID=9133810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7402088A Granted FR2258515A1 (en) | 1974-01-22 | 1974-01-22 | Transmission for underground drilling motor - with axially displaceable coupling for locking the motor stator and rotor to release a jammed drill bit |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2258515A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2332412A1 (en) * | 1975-11-19 | 1977-06-17 | Alsthom Cgee | Locking stator to rotor of underground motor - for release of wedged tools, esp. in deep holes |
GB0101014D0 (en) * | 2001-01-15 | 2001-02-28 | Neyrfor Weir Ltd | Improved downhole tool |
WO2017168272A1 (en) * | 2016-03-28 | 2017-10-05 | Extreme Machining Australia Pty Ltd. | Wellbore motor with selective locking mechanism |
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1974
- 1974-01-22 FR FR7402088A patent/FR2258515A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2258515A1 (en) | 1975-08-18 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |