SE358927B - - Google Patents
Info
- Publication number
- SE358927B SE358927B SE13261/72A SE1326172A SE358927B SE 358927 B SE358927 B SE 358927B SE 13261/72 A SE13261/72 A SE 13261/72A SE 1326172 A SE1326172 A SE 1326172A SE 358927 B SE358927 B SE 358927B
- Authority
- SE
- Sweden
Links
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
- E21B6/00—Drives for drilling with combined rotary and percussive action
- E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
- E21B6/08—Separate drives for percussion and rotation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (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 |
|---|---|---|---|
| SE13261/72A SE358927B (en:Method) | 1972-10-13 | 1972-10-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE13261/72A SE358927B (en:Method) | 1972-10-13 | 1972-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE358927B true SE358927B (en:Method) | 1973-08-13 |
Family
ID=20297122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE13261/72A SE358927B (en:Method) | 1972-10-13 | 1972-10-13 |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE358927B (en:Method) |
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1972
- 1972-10-13 SE SE13261/72A patent/SE358927B/xx unknown