FR2155825A1 - - Google Patents
Info
- Publication number
- FR2155825A1 FR2155825A1 FR7136221A FR7136221A FR2155825A1 FR 2155825 A1 FR2155825 A1 FR 2155825A1 FR 7136221 A FR7136221 A FR 7136221A FR 7136221 A FR7136221 A FR 7136221A FR 2155825 A1 FR2155825 A1 FR 2155825A1
- 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.)
- Granted
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
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
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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
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7136221A FR2155825B3 (enExample) | 1971-10-08 | 1971-10-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7136221A FR2155825B3 (enExample) | 1971-10-08 | 1971-10-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2155825A1 true FR2155825A1 (enExample) | 1973-05-25 |
| FR2155825B3 FR2155825B3 (enExample) | 1974-06-07 |
Family
ID=9084087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7136221A Expired FR2155825B3 (enExample) | 1971-10-08 | 1971-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2155825B3 (enExample) |
-
1971
- 1971-10-08 FR FR7136221A patent/FR2155825B3/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2155825B3 (enExample) | 1974-06-07 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |