DE125255C - - Google Patents
Info
- Publication number
- DE125255C DE125255C DENDAT125255D DE125255DA DE125255C DE 125255 C DE125255 C DE 125255C DE NDAT125255 D DENDAT125255 D DE NDAT125255D DE 125255D A DE125255D A DE 125255DA DE 125255 C DE125255 C DE 125255C
- Authority
- DE
- Germany
- Prior art keywords
- drill bit
- diameter
- borehole
- drilling
- under
- Prior art date
- 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.)
- Active
Links
- 238000005553 drilling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000969 carrier Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/04—Electric drives
-
- 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
- E21B10/00—Drill bits
- E21B10/02—Core bits
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)
Publications (1)
Publication Number | Publication Date |
---|---|
DE125255C true DE125255C (enrdf_load_html_response) |
Family
ID=393991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT125255D Active DE125255C (enrdf_load_html_response) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE125255C (enrdf_load_html_response) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3837412A (en) * | 1972-12-06 | 1974-09-24 | W Driver | Downhole electrical core drilling system |
-
0
- DE DENDAT125255D patent/DE125255C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3837412A (en) * | 1972-12-06 | 1974-09-24 | W Driver | Downhole electrical core drilling system |
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