DE317125C - - Google Patents
Info
- Publication number
- DE317125C DE317125C DENDAT317125D DE317125DA DE317125C DE 317125 C DE317125 C DE 317125C DE NDAT317125 D DENDAT317125 D DE NDAT317125D DE 317125D A DE317125D A DE 317125DA DE 317125 C DE317125 C DE 317125C
- Authority
- DE
- Germany
- Prior art keywords
- borehole
- hard rock
- milling
- auger
- work
- 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
- 238000003801 milling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 description 5
- 239000002360 explosive Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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 |
---|---|
DE317125C true DE317125C (enrdf_load_html_response) |
Family
ID=569793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT317125D Active DE317125C (enrdf_load_html_response) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE317125C (enrdf_load_html_response) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2572839A (en) * | 1947-10-23 | 1951-10-30 | Mcclinton John | Combination key seat remover and vibration distributor for well drilling |
-
0
- DE DENDAT317125D patent/DE317125C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2572839A (en) * | 1947-10-23 | 1951-10-30 | Mcclinton John | Combination key seat remover and vibration distributor for well drilling |
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