NO165970C - Sikkerhetsventil. - Google Patents
Sikkerhetsventil.Info
- Publication number
- NO165970C NO165970C NO843898A NO843898A NO165970C NO 165970 C NO165970 C NO 165970C NO 843898 A NO843898 A NO 843898A NO 843898 A NO843898 A NO 843898A NO 165970 C NO165970 C NO 165970C
- Authority
- NO
- Norway
- Prior art keywords
- safety valve
- safety
- valve
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
-
- 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
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
- E21B34/102—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
- Pipe Accessories (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/540,080 US4538685A (en) | 1983-10-07 | 1983-10-07 | Locking annulus safety valve |
Publications (3)
Publication Number | Publication Date |
---|---|
NO843898L NO843898L (no) | 1985-04-09 |
NO165970B NO165970B (no) | 1991-01-28 |
NO165970C true NO165970C (no) | 1991-05-08 |
Family
ID=24153907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO843898A NO165970C (no) | 1983-10-07 | 1984-09-28 | Sikkerhetsventil. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4538685A (no) |
FR (1) | FR2557948A1 (no) |
GB (2) | GB2149835B (no) |
NO (1) | NO165970C (no) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4691776A (en) * | 1986-05-29 | 1987-09-08 | Camco, Incorporated | Retrievable well safety valve with expandable external seals |
US5082061A (en) * | 1990-07-25 | 1992-01-21 | Otis Engineering Corporation | Rotary locking system with metal seals |
US5207275A (en) * | 1990-08-27 | 1993-05-04 | Strattan Scott C | Annulus safety valve |
NO333064B1 (no) | 2010-07-28 | 2013-02-25 | Well Innovation Engineering As | Bronnplugg med ekspanderende elastomerpakning samt en ekspansjonsring. |
US8752634B2 (en) * | 2011-10-26 | 2014-06-17 | Vetco Gray Inc. | Segmented seal ring and support of same |
CN103147714B (zh) * | 2013-03-05 | 2015-06-17 | 中国海洋石油总公司 | 一种用于电潜泵采油井中的环空安全装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1324775A (en) * | 1919-12-16 | Henrik anathor-hebtriksen | ||
US3131769A (en) * | 1962-04-09 | 1964-05-05 | Baker Oil Tools Inc | Hydraulic anchors for tubular strings |
US3288221A (en) * | 1964-03-06 | 1966-11-29 | Pan American Petroleum Corp | Subsurface safety valve |
US3410348A (en) * | 1966-01-13 | 1968-11-12 | John S. Page | Retrievable valved packer |
US4049052A (en) * | 1976-04-05 | 1977-09-20 | Otis Engineering Corporation | Subsurface annulus safety valve |
US4224987A (en) * | 1978-02-13 | 1980-09-30 | Brown Oil Tools, Inc. | Well tool |
US4252197A (en) * | 1979-04-05 | 1981-02-24 | Camco, Incorporated | Piston actuated well safety valve |
US4305465A (en) * | 1980-02-01 | 1981-12-15 | Dresser Industries, Inc. | Subsurface tubing hanger and stinger assembly |
US4273194A (en) * | 1980-02-11 | 1981-06-16 | Camco, Incorporated | Annular flow control safety valve |
-
1983
- 1983-10-07 US US06/540,080 patent/US4538685A/en not_active Expired - Lifetime
-
1984
- 1984-09-18 GB GB08423503A patent/GB2149835B/en not_active Expired
- 1984-09-28 NO NO843898A patent/NO165970C/no unknown
- 1984-10-05 FR FR8415293A patent/FR2557948A1/fr not_active Withdrawn
-
1985
- 1985-03-21 GB GB08507326A patent/GB2158127B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NO843898L (no) | 1985-04-09 |
GB2158127A (en) | 1985-11-06 |
GB8507326D0 (en) | 1985-05-01 |
GB8423503D0 (en) | 1984-10-24 |
US4538685A (en) | 1985-09-03 |
GB2149835B (en) | 1986-07-30 |
GB2149835A (en) | 1985-06-19 |
FR2557948A1 (fr) | 1985-07-12 |
NO165970B (no) | 1991-01-28 |
GB2158127B (en) | 1986-07-30 |
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