GB8919704D0 - Annulus downhole safety valve - Google Patents
Annulus downhole safety valveInfo
- Publication number
- GB8919704D0 GB8919704D0 GB898919704A GB8919704A GB8919704D0 GB 8919704 D0 GB8919704 D0 GB 8919704D0 GB 898919704 A GB898919704 A GB 898919704A GB 8919704 A GB8919704 A GB 8919704A GB 8919704 D0 GB8919704 D0 GB 8919704D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- safety valve
- downhole safety
- annulus downhole
- annulus
- valve
- 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.)
- Pending
Links
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898919704A GB8919704D0 (en) | 1989-08-31 | 1989-08-31 | Annulus downhole safety valve |
GB9017916A GB2235938B (en) | 1989-08-31 | 1990-08-15 | Annulus safety valve |
NO90903764A NO903764L (en) | 1989-08-31 | 1990-08-28 | Annulus SAFETY VALVE. |
US07/575,249 US5040606A (en) | 1989-08-31 | 1990-08-30 | Annulus safety valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898919704A GB8919704D0 (en) | 1989-08-31 | 1989-08-31 | Annulus downhole safety valve |
Publications (1)
Publication Number | Publication Date |
---|---|
GB8919704D0 true GB8919704D0 (en) | 1989-10-11 |
Family
ID=10662331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB898919704A Pending GB8919704D0 (en) | 1989-08-31 | 1989-08-31 | Annulus downhole safety valve |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB8919704D0 (en) |
-
1989
- 1989-08-31 GB GB898919704A patent/GB8919704D0/en active Pending
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