GB8919704D0 - Annulus downhole safety valve - Google Patents

Annulus downhole safety valve

Info

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
Application number
GB898919704A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BP PLC
Original Assignee
BP PLC
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.)
Filing date
Publication date
Application filed by BP PLC filed Critical BP PLC
Priority to GB898919704A priority Critical patent/GB8919704D0/en
Publication of GB8919704D0 publication Critical patent/GB8919704D0/en
Priority to GB9017916A priority patent/GB2235938B/en
Priority to NO90903764A priority patent/NO903764L/en
Priority to US07/575,249 priority patent/US5040606A/en
Pending legal-status Critical Current

Links

GB898919704A 1989-08-31 1989-08-31 Annulus downhole safety valve Pending GB8919704D0 (en)

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)

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