CH387573A - Couronne de sondage - Google Patents
Couronne de sondageInfo
- Publication number
- CH387573A CH387573A CH1353762A CH1353762A CH387573A CH 387573 A CH387573 A CH 387573A CH 1353762 A CH1353762 A CH 1353762A CH 1353762 A CH1353762 A CH 1353762A CH 387573 A CH387573 A CH 387573A
- Authority
- CH
- Switzerland
- Prior art keywords
- poll
- crown
- poll crown
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
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 |
---|---|---|---|
BE487483 | 1961-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH387573A true CH387573A (fr) | 1965-02-15 |
Family
ID=3844628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1353762A CH387573A (fr) | 1961-12-11 | 1962-11-19 | Couronne de sondage |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH387573A (fr) |
GB (1) | GB986170A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104131783B (zh) * | 2014-08-18 | 2016-06-15 | 中国地质大学(武汉) | 一种胎体唇面呈楔形的金刚石钻头 |
-
1962
- 1962-11-19 CH CH1353762A patent/CH387573A/fr unknown
- 1962-12-11 GB GB4681462A patent/GB986170A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB986170A (en) | 1965-03-17 |
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