GB8521937D0 - Drill pipe - Google Patents
Drill pipeInfo
- Publication number
- GB8521937D0 GB8521937D0 GB858521937A GB8521937A GB8521937D0 GB 8521937 D0 GB8521937 D0 GB 8521937D0 GB 858521937 A GB858521937 A GB 858521937A GB 8521937 A GB8521937 A GB 8521937A GB 8521937 D0 GB8521937 D0 GB 8521937D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill pipe
- drill
- pipe
- 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.)
- Withdrawn
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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Earth Drilling (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65528284A | 1984-09-28 | 1984-09-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8521937D0 true GB8521937D0 (en) | 1985-10-09 |
GB2164981A GB2164981A (en) | 1986-04-03 |
Family
ID=24628279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08521937A Withdrawn GB2164981A (en) | 1984-09-28 | 1985-09-04 | Inside blowout preventer |
Country Status (5)
Country | Link |
---|---|
CA (1) | CA1234540A (en) |
DE (1) | DE3533292A1 (en) |
FR (1) | FR2571092A1 (en) |
GB (1) | GB2164981A (en) |
NO (1) | NO853801L (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117262945A (en) * | 2023-11-21 | 2023-12-22 | 上海华菱电站成套设备股份有限公司 | Mine wellhead protection device for mine hoist |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3584645A (en) * | 1969-12-30 | 1971-06-15 | Cook Testing Co | Flow control valve for wells |
US3850191A (en) * | 1973-01-09 | 1974-11-26 | Brown Oil Tools | Check valve assembly |
US3867985A (en) * | 1974-01-11 | 1975-02-25 | Thelton E Wilkinson | Apparatus for and method of preventing blow-out while removing a fish within wash pipe from a borehole |
US4049015A (en) * | 1974-08-08 | 1977-09-20 | Brown Oil Tools, Inc. | Check valve assembly |
GB2048335B (en) * | 1979-05-10 | 1982-12-15 | Lynch Davis Inc | Re-entry cementing float shoe |
US4263936A (en) * | 1979-10-09 | 1981-04-28 | Brown Oil Tools, Inc. | Erosion resistant check valve assembly |
GB2102474A (en) * | 1981-07-13 | 1983-02-02 | Hughes Tool Co | Inside downhole blowout preventer |
-
1985
- 1985-04-22 CA CA000479698A patent/CA1234540A/en not_active Expired
- 1985-09-04 GB GB08521937A patent/GB2164981A/en not_active Withdrawn
- 1985-09-18 DE DE19853533292 patent/DE3533292A1/en not_active Withdrawn
- 1985-09-27 FR FR8514323A patent/FR2571092A1/en not_active Withdrawn
- 1985-09-27 NO NO853801A patent/NO853801L/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117262945A (en) * | 2023-11-21 | 2023-12-22 | 上海华菱电站成套设备股份有限公司 | Mine wellhead protection device for mine hoist |
CN117262945B (en) * | 2023-11-21 | 2024-01-23 | 上海华菱电站成套设备股份有限公司 | Mine wellhead protection device for mine hoist |
Also Published As
Publication number | Publication date |
---|---|
FR2571092A1 (en) | 1986-04-04 |
GB2164981A (en) | 1986-04-03 |
CA1234540A (en) | 1988-03-29 |
DE3533292A1 (en) | 1986-04-24 |
NO853801L (en) | 1986-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |