GB9821632D0 - Dual purpose borehole sub - Google Patents
Dual purpose borehole subInfo
- Publication number
- GB9821632D0 GB9821632D0 GBGB9821632.8A GB9821632A GB9821632D0 GB 9821632 D0 GB9821632 D0 GB 9821632D0 GB 9821632 A GB9821632 A GB 9821632A GB 9821632 D0 GB9821632 D0 GB 9821632D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- dual purpose
- sub
- borehole sub
- purpose borehole
- dual
- 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.)
- Ceased
Links
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9821632.8A GB9821632D0 (en) | 1998-10-06 | 1998-10-06 | Dual purpose borehole sub |
GB9922444A GB2342669B (en) | 1998-10-06 | 1999-09-23 | Dual purpose borehole sub |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9821632.8A GB9821632D0 (en) | 1998-10-06 | 1998-10-06 | Dual purpose borehole sub |
Publications (1)
Publication Number | Publication Date |
---|---|
GB9821632D0 true GB9821632D0 (en) | 1998-11-25 |
Family
ID=10839983
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB9821632.8A Ceased GB9821632D0 (en) | 1998-10-06 | 1998-10-06 | Dual purpose borehole sub |
GB9922444A Expired - Lifetime GB2342669B (en) | 1998-10-06 | 1999-09-23 | Dual purpose borehole sub |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9922444A Expired - Lifetime GB2342669B (en) | 1998-10-06 | 1999-09-23 | Dual purpose borehole sub |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB9821632D0 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9650884B2 (en) * | 2013-09-20 | 2017-05-16 | Weatherford Technology Holdings, Llc | Use of downhole isolation valve to sense annulus pressure |
US10787900B2 (en) | 2013-11-26 | 2020-09-29 | Weatherford Technology Holdings, Llc | Differential pressure indicator for downhole isolation valve |
CN114198055B (en) * | 2020-09-02 | 2023-07-28 | 中国海洋石油集团有限公司 | Sampling injection switching valve and sampling injection method thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3895527A (en) * | 1973-11-08 | 1975-07-22 | Sperry Sun Well Surveying Co | Method and apparatus for measuring pressure related parameters in a borehole |
US4505155A (en) * | 1981-07-13 | 1985-03-19 | Sperry-Sun, Inc. | Borehole pressure measuring system |
-
1998
- 1998-10-06 GB GBGB9821632.8A patent/GB9821632D0/en not_active Ceased
-
1999
- 1999-09-23 GB GB9922444A patent/GB2342669B/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB2342669A (en) | 2000-04-19 |
GB9922444D0 (en) | 1999-11-24 |
GB2342669B (en) | 2003-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AT | Applications terminated before publication under section 16(1) |