NO783026L - Sikkerhetsventil. - Google Patents

Sikkerhetsventil.

Info

Publication number: NO783026L
Authority: NO; Norway
Prior art keywords: valve; elements; activator; piston; movement
Prior art date: 1977-09-06

Application number

NO783026A

Other languages

English (en)

Norwegian (no)

Inventor

Benjamin P Nutter

Original Assignee

Schlumberger Technology Corp

Priority date (The priority date 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 date listed.)

1977-09-06

Filing date

1978-09-05

Publication date

1979-03-07

1978-09-05 Application filed by Schlumberger Technology Corp filed Critical Schlumberger Technology Corp

1979-03-07 Publication of NO783026L publication Critical patent/NO783026L/no

Links

239000012190 activator Substances 0.000 claims description 29
239000012530 fluid Substances 0.000 claims description 27
238000007789 sealing Methods 0.000 claims description 11
238000006073 displacement reaction Methods 0.000 claims 2
238000006243 chemical reaction Methods 0.000 claims 1
238000000605 extraction Methods 0.000 claims 1
238000012360 testing method Methods 0.000 description 13
230000015572 biosynthetic process Effects 0.000 description 5
238000010276 construction Methods 0.000 description 4
238000005553 drilling Methods 0.000 description 3
238000012986 modification Methods 0.000 description 2
230000004048 modification Effects 0.000 description 2
238000012856 packing Methods 0.000 description 2
230000006835 compression Effects 0.000 description 1
238000007906 compression Methods 0.000 description 1
238000010586 diagram Methods 0.000 description 1
239000000945 filler Substances 0.000 description 1
238000000034 method Methods 0.000 description 1
238000010408 sweeping Methods 0.000 description 1
238000012546 transfer Methods 0.000 description 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/12—Valve arrangements for boreholes or wells in wells operated by movement of casings or tubings
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/05—Flapper valves

Landscapes

Geology (AREA)
Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Mining & Mineral Resources (AREA)
Environmental & Geological Engineering (AREA)
Fluid Mechanics (AREA)
Physics & Mathematics (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Earth Drilling (AREA)
Mechanically-Actuated Valves (AREA)
Safety Valves (AREA)
Medical Preparation Storing Or Oral Administration Devices (AREA)

NO783026A 1977-09-06 1978-09-05 Sikkerhetsventil. NO783026L (no)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/830,714 US4141418A (en)	1977-09-06	1977-09-06	Safety valve hydraulically operated by telescopic drill stem movement

Publications (1)

Publication Number	Publication Date
NO783026L true NO783026L (no)	1979-03-07

Family

ID=25257545

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO783026A NO783026L (no)	1977-09-06	1978-09-05	Sikkerhetsventil.

Country Status (11)

Country	Link
US (1)	US4141418A (de)
AR (1)	AR225136A1 (de)
BR (1)	BR7805772A (de)
CA (1)	CA1091578A (de)
DE (1)	DE2838255A1 (de)
FR (1)	FR2402137B1 (de)
GB (1)	GB2003959B (de)
IT (1)	IT1098504B (de)
MX (1)	MX147647A (de)
NL (1)	NL185098C (de)
NO (1)	NO783026L (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4458762A (en) *	1982-04-21	1984-07-10	Halliburton Company	Recloseable auxiliary valve
US4648457A (en) *	1985-10-24	1987-03-10	Baker Oil Tools, Inc.	Injection control device for subterranean well conduit
US4846280A (en) *	1988-04-08	1989-07-11	Marathon Oil Company	Drill stem test method and apparatus
WO1998050675A1 (en) *	1997-05-05	1998-11-12	Williams J Terrell	Multi-gage blowout preventer test tool and method
AU7370298A (en) *	1997-05-05	1998-11-27	Williams J. Terrell	Shearable multi-gage blowout preventer test tool and method
US9212536B2 (en)	2012-06-25	2015-12-15	Schlumberger Technology Corporation	Device having a hard seat support

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3367422A (en) *	1966-02-25	1968-02-06	National Science Foundation Usa	Bumper sub position indicator
US3646995A (en) *	1969-12-08	1972-03-07	Halliburton Co	Method and apparatus for testing offshore wells
US3653439A (en) *	1970-06-01	1972-04-04	Schlumberger Technology Corp	Subsurface safety valve
US3815675A (en) *	1972-05-22	1974-06-11	Exxon Production Research Co	Wireline operated subsurface safety valve
US3845818A (en) *	1973-08-10	1974-11-05	Otis Eng Co	Well tools
US3861464A (en) *	1973-10-29	1975-01-21	Varco Int	Safety valve for wells
US3901321A (en) *	1973-12-26	1975-08-26	Hydril Co	Safety valve method and apparatus

1977
- 1977-09-06 US US05/830,714 patent/US4141418A/en not_active Expired - Lifetime
1978
- 1978-08-23 NL NLAANVRAGE7808688,A patent/NL185098C/xx not_active IP Right Cessation
- 1978-08-23 CA CA309,906A patent/CA1091578A/en not_active Expired
- 1978-09-01 DE DE19782838255 patent/DE2838255A1/de not_active Withdrawn
- 1978-09-04 BR BR7805772A patent/BR7805772A/pt unknown
- 1978-09-05 IT IT27342/78A patent/IT1098504B/it active
- 1978-09-05 MX MX174763A patent/MX147647A/es unknown
- 1978-09-05 FR FR7825478A patent/FR2402137B1/fr not_active Expired
- 1978-09-05 NO NO783026A patent/NO783026L/no unknown
- 1978-09-05 GB GB7835636A patent/GB2003959B/en not_active Expired
- 1978-09-06 AR AR273594A patent/AR225136A1/es active

Also Published As

Publication number	Publication date
NL185098B (nl)	1989-08-16
BR7805772A (pt)	1979-04-24
DE2838255A1 (de)	1979-03-15
IT7827342A0 (it)	1978-09-05
NL185098C (nl)	1990-01-16
FR2402137B1 (fr)	1985-10-25
MX147647A (es)	1982-12-30
CA1091578A (en)	1980-12-16
GB2003959A (en)	1979-03-21
FR2402137A1 (fr)	1979-03-30
AR225136A1 (es)	1982-02-26
NL7808688A (nl)	1979-03-08
US4141418A (en)	1979-02-27
IT1098504B (it)	1985-09-07
GB2003959B (en)	1982-01-27

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