DE121879C - - Google Patents
Info
- Publication number
- DE121879C DE121879C DENDAT121879D DE121879DA DE121879C DE 121879 C DE121879 C DE 121879C DE NDAT121879 D DENDAT121879 D DE NDAT121879D DE 121879D A DE121879D A DE 121879DA DE 121879 C DE121879 C DE 121879C
- Authority
- DE
- Germany
- Prior art keywords
- drill
- reinforcement
- shoulder
- jaws
- jaw
- 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
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 description 2
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
- E21B10/00—Drill bits
- E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
- E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
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 |
|---|---|
| DE121879C true DE121879C (cs) |
Family
ID=390848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT121879D Active DE121879C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE121879C (cs) |
-
0
- DE DENDAT121879D patent/DE121879C/de active Active
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