BE434813A - - Google Patents
Info
- Publication number
- BE434813A BE434813A BE434813DA BE434813A BE 434813 A BE434813 A BE 434813A BE 434813D A BE434813D A BE 434813DA BE 434813 A BE434813 A BE 434813A
- Authority
- BE
- Belgium
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)
- Earth Drilling (AREA)
- Actuator (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US529694XA | 1938-06-11 | 1938-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE434813A true BE434813A (de) |
Family
ID=21981076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE434813D BE434813A (de) | 1938-06-11 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE434813A (de) |
| FR (1) | FR855963A (de) |
| GB (1) | GB529694A (de) |
-
0
- BE BE434813D patent/BE434813A/xx unknown
-
1939
- 1939-06-06 GB GB16621/39A patent/GB529694A/en not_active Expired
- 1939-06-08 FR FR855963D patent/FR855963A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB529694A (en) | 1940-11-26 |
| FR855963A (fr) | 1940-05-24 |