SE7012137L - - Google Patents
Info
- Publication number
- SE7012137L SE7012137L SE7012137DA SE7012137L SE 7012137 L SE7012137 L SE 7012137L SE 7012137D A SE7012137D A SE 7012137DA SE 7012137 L SE7012137 L SE 7012137L
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7012137T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE7012137L true SE7012137L (no) | 1972-03-10 |
Family
ID=51947539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7012137D SE7012137L (no) |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE7012137L (no) |
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0
- SE SE7012137D patent/SE7012137L/xx unknown