SE7601187L - Anordning vid bergborrkrona - Google Patents
Anordning vid bergborrkronaInfo
- Publication number
- SE7601187L SE7601187L SE7601187A SE7601187A SE7601187L SE 7601187 L SE7601187 L SE 7601187L SE 7601187 A SE7601187 A SE 7601187A SE 7601187 A SE7601187 A SE 7601187A SE 7601187 L SE7601187 L SE 7601187L
- Authority
- SE
- Sweden
- Prior art keywords
- drill crown
- mountain drill
- mountain
- crown
- drill
- Prior art date
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
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US55078275A | 1975-02-18 | 1975-02-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE7601187L true SE7601187L (sv) | 1976-08-19 |
Family
ID=24198547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7601187A SE7601187L (sv) | 1975-02-18 | 1976-02-04 | Anordning vid bergborrkrona |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2606712A1 (fr) |
FR (1) | FR2301680A1 (fr) |
NO (1) | NO760008L (fr) |
SE (1) | SE7601187L (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4687067A (en) * | 1986-05-01 | 1987-08-18 | Smith International, Inc. | Crossflow rotary cone rock bit with extended nozzles |
-
1976
- 1976-01-02 NO NO760008A patent/NO760008L/no unknown
- 1976-02-04 SE SE7601187A patent/SE7601187L/xx unknown
- 1976-02-16 FR FR7604158A patent/FR2301680A1/fr not_active Withdrawn
- 1976-02-17 DE DE19762606712 patent/DE2606712A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2606712A1 (de) | 1976-08-19 |
NO760008L (fr) | 1976-08-19 |
FR2301680A1 (fr) | 1976-09-17 |
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