GB1201489A - Improvements in percussive well drill bit - Google Patents
Improvements in percussive well drill bitInfo
- Publication number
- GB1201489A GB1201489A GB5292567A GB5292567A GB1201489A GB 1201489 A GB1201489 A GB 1201489A GB 5292567 A GB5292567 A GB 5292567A GB 5292567 A GB5292567 A GB 5292567A GB 1201489 A GB1201489 A GB 1201489A
- Authority
- GB
- United Kingdom
- Prior art keywords
- central passage
- well drill
- valve
- percussive
- drill bit
- 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.)
- Expired
Links
- 238000011010 flushing procedure Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 238000005520 cutting process Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 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
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion 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)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
1,201,489. Boring earth &c. ATLAS COPCO A.B. 21 Nov., 1967 [30 Nov., 1966], No. 42925/ 67. Heading E1F. A well drill 10 has a central passage 15 and branch passages 16, 17 for flushing liquid, a non-return valve 19 being provided adjacent the junction of the passages to prevent cuttings entering the central passage when the supply of flushing liquid is discontinued. The valve is a rubber disk sliding on a pin 20. In a modification the valve is a rubber flap within a rubber cylinder vulcanized to a sleeve which is removably fixed in the central passage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1634566 | 1966-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1201489A true GB1201489A (en) | 1970-08-05 |
Family
ID=20302098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5292567A Expired GB1201489A (en) | 1966-11-30 | 1967-11-21 | Improvements in percussive well drill bit |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1201489A (en) |
| NO (1) | NO119787B (en) |
-
1967
- 1967-11-09 NO NO17045867A patent/NO119787B/no unknown
- 1967-11-21 GB GB5292567A patent/GB1201489A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO119787B (en) | 1970-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |