NL49468C - - Google Patents
Info
- Publication number
- NL49468C NL49468C NL49468DA NL49468C NL 49468 C NL49468 C NL 49468C NL 49468D A NL49468D A NL 49468DA NL 49468 C NL49468 C NL 49468C
- Authority
- NL
- Netherlands
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
- E21B19/084—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 flexible drawing means, e.g. cables
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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE499127X | 1937-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL49468C true NL49468C (en:Method) |
Family
ID=20310737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL49468D NL49468C (en:Method) | 1937-06-19 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB499127A (en:Method) |
| NL (1) | NL49468C (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832099B (zh) * | 2010-04-03 | 2013-01-23 | 金小明 | 应用于煤矿采掘工作面的专用钻机 |
-
0
- NL NL49468D patent/NL49468C/xx active
-
1938
- 1938-06-20 GB GB18277/38A patent/GB499127A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB499127A (en) | 1939-01-18 |