FR2260687B1 - - Google Patents
Info
- Publication number
- FR2260687B1 FR2260687B1 FR7504366A FR7504366A FR2260687B1 FR 2260687 B1 FR2260687 B1 FR 2260687B1 FR 7504366 A FR7504366 A FR 7504366A FR 7504366 A FR7504366 A FR 7504366A FR 2260687 B1 FR2260687 B1 FR 2260687B1
- Authority
- FR
- France
- 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.)
- Expired
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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
-
- 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
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)
- Drilling Tools (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44218174A | 1974-02-13 | 1974-02-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2260687A1 FR2260687A1 (ja) | 1975-09-05 |
FR2260687B1 true FR2260687B1 (ja) | 1979-07-27 |
Family
ID=23755835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7504366A Expired FR2260687B1 (ja) | 1974-02-13 | 1975-02-12 |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2260687B1 (ja) |
GB (1) | GB1466036A (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX144441A (es) * | 1976-07-12 | 1981-10-15 | Christensen Inc | Broca mejorada para utilizarse en la perforacion de pozos |
US4073354A (en) * | 1976-11-26 | 1978-02-14 | Christensen, Inc. | Earth-boring drill bits |
US4098363A (en) * | 1977-04-25 | 1978-07-04 | Christensen, Inc. | Diamond drilling bit for soft and medium hard formations |
FR2422478A1 (fr) * | 1978-04-11 | 1979-11-09 | Michelin & Cie | Dispositif d'erosion comportant une tete avec des couteaux |
FR2587630A1 (fr) * | 1985-09-20 | 1987-03-27 | Bourlier Manutention | Outil desagregateur |
CN107288550B (zh) * | 2017-08-18 | 2023-07-04 | 陕西圆极岩土科技发展有限公司 | 适用于硬质岩土层的打桩成孔钻头 |
-
1975
- 1975-02-04 GB GB472375A patent/GB1466036A/en not_active Expired
- 1975-02-12 FR FR7504366A patent/FR2260687B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1466036A (en) | 1977-03-02 |
AU7809175A (en) | 1976-08-12 |
FR2260687A1 (ja) | 1975-09-05 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |