AU7836198A - Pressure equalizing safety valve for subterranean wells - Google Patents
Pressure equalizing safety valve for subterranean wellsInfo
- Publication number
- AU7836198A AU7836198A AU78361/98A AU7836198A AU7836198A AU 7836198 A AU7836198 A AU 7836198A AU 78361/98 A AU78361/98 A AU 78361/98A AU 7836198 A AU7836198 A AU 7836198A AU 7836198 A AU7836198 A AU 7836198A
- Authority
- AU
- Australia
- Prior art keywords
- safety valve
- pressure equalizing
- subterranean wells
- equalizing safety
- subterranean
- 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.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B34/101—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for equalizing fluid pressure above and below the valve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4917197P | 1997-06-10 | 1997-06-10 | |
US06049171 | 1997-06-10 | ||
PCT/US1998/012121 WO1998057029A1 (en) | 1997-06-10 | 1998-06-10 | Pressure equalizing safety valve for subterranean wells |
Publications (1)
Publication Number | Publication Date |
---|---|
AU7836198A true AU7836198A (en) | 1998-12-30 |
Family
ID=21958403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU78361/98A Abandoned AU7836198A (en) | 1997-06-10 | 1998-06-10 | Pressure equalizing safety valve for subterranean wells |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU7836198A (en) |
GB (1) | GB2343208B (en) |
WO (1) | WO1998057029A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6283217B1 (en) | 1998-08-06 | 2001-09-04 | Schlumberger Technology Corp. | Axial equalizing valve |
GB2345076B (en) * | 1998-12-22 | 2001-06-20 | Camco Int | Pilot-operated pressure-equalizing mechanism for subsurface valve |
AU784461B2 (en) * | 2000-12-05 | 2006-04-06 | Baker Hughes Incorporated | Equalizing flapper for down hole safety valves |
US6848509B2 (en) * | 2001-10-22 | 2005-02-01 | Baker Hughes Incorporated | Pressure equalizing plunger valve for downhole use |
US7204313B2 (en) * | 2005-01-07 | 2007-04-17 | Baker Hughes Incorporated | Equalizing flapper for high slam rate applications |
US9163479B2 (en) | 2007-08-03 | 2015-10-20 | Baker Hughes Incorporated | Flapper operating system without a flow tube |
US8684096B2 (en) | 2009-04-02 | 2014-04-01 | Key Energy Services, Llc | Anchor assembly and method of installing anchors |
US9303477B2 (en) | 2009-04-02 | 2016-04-05 | Michael J. Harris | Methods and apparatus for cementing wells |
US8453729B2 (en) | 2009-04-02 | 2013-06-04 | Key Energy Services, Llc | Hydraulic setting assembly |
CN105156040B (en) * | 2015-07-23 | 2017-07-25 | 中国石油天然气集团公司 | A kind of drilling bit with square drill rod for preventing splashing of mud |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2267501B1 (en) * | 1974-04-12 | 1980-03-14 | Elf Aquitaine | |
US4161219A (en) * | 1978-02-27 | 1979-07-17 | Camco, Incorporated | Piston actuated well safety valve |
US4252197A (en) | 1979-04-05 | 1981-02-24 | Camco, Incorporated | Piston actuated well safety valve |
US4415036A (en) * | 1982-02-22 | 1983-11-15 | Baker Oil Tools, Inc. | Pressure equalizing flapper type safety valve for subterranean wells |
US4478286A (en) * | 1983-02-14 | 1984-10-23 | Baker Oil Tools, Inc. | Equalizing valve for subterranean wells |
US4660646A (en) | 1985-11-27 | 1987-04-28 | Camco, Incorporated | Failsafe gas closed safety valve |
US4976317A (en) | 1989-07-31 | 1990-12-11 | Camco International Inc. | Well tool hydrostatic release means |
US5310004A (en) | 1993-01-13 | 1994-05-10 | Camco International Inc. | Fail safe gas bias safety valve |
US5503229A (en) * | 1994-09-09 | 1996-04-02 | Camco International Inc. | Equalizing subsurface safety valve |
US5682921A (en) * | 1996-05-28 | 1997-11-04 | Baker Hughes Incorporated | Undulating transverse interface for curved flapper seal |
-
1998
- 1998-06-10 GB GB9928372A patent/GB2343208B/en not_active Expired - Fee Related
- 1998-06-10 AU AU78361/98A patent/AU7836198A/en not_active Abandoned
- 1998-06-10 WO PCT/US1998/012121 patent/WO1998057029A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
GB2343208B (en) | 2002-02-20 |
WO1998057029A1 (en) | 1998-12-17 |
GB2343208A (en) | 2000-05-03 |
GB9928372D0 (en) | 2000-01-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU7712998A (en) | Pressure equalizing safety valve for subterranean wells | |
AU9360698A (en) | Downhole valve | |
GB2292959B (en) | Equalizing subsurface safety valve | |
GB2327445B (en) | Fluid pressure operable downhole tool | |
AU6621696A (en) | Downhole valve | |
GB2330598B (en) | Computer controlled downhole safety valve system | |
EP0681088A3 (en) | Annulus pressure responsive downhole tool. | |
AU5001299A (en) | Subsea wellbore drilling system for reducing bottom hole pressure | |
AU8348898A (en) | Downhole tubing | |
AU4512396A (en) | Filter for subterranean wells | |
GB9801377D0 (en) | Downhole valve | |
AU9214098A (en) | Production fluid control device for oil/gas wells | |
GB2358420B (en) | Eccentric subsurface safety valve | |
AU693667B2 (en) | Hydraulic coupling with pressure equalizing valve | |
AU3156497A (en) | Subsurface safety valve actuation pressure amplifier | |
EP0622521A3 (en) | Combination packer/safety valve assembly for gas storage wells. | |
AU5391599A (en) | Axial pressure equalizing valve for a well safety valve | |
AU3534997A (en) | Downhole two-way check valve | |
EP1144794A3 (en) | Control system for the workover of oil wells | |
GB9520680D0 (en) | Subsurface safety valve | |
EG22116A (en) | Downhole safety valve | |
AU1090499A (en) | Equalizing subsurface safety valve with injection system | |
AU7836198A (en) | Pressure equalizing safety valve for subterranean wells | |
AU5107799A (en) | Pressure reducing valve | |
AU7946898A (en) | Arrangement for underground stop valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK6 | Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase |