GB9821632D0 - Dual purpose borehole sub - Google Patents

Dual purpose borehole sub

Info

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
Application number
GBGB9821632.8A
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.)
FRASER SIMON B
Original Assignee
FRASER SIMON B
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 FRASER SIMON B filed Critical FRASER SIMON B
Priority to GBGB9821632.8A priority Critical patent/GB9821632D0/en
Publication of GB9821632D0 publication Critical patent/GB9821632D0/en
Priority to GB9922444A priority patent/GB2342669B/en
Ceased legal-status Critical Current

Links

GBGB9821632.8A 1998-10-06 1998-10-06 Dual purpose borehole sub Ceased GB9821632D0 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
GB2342669A (en) 2000-04-19
GB2342669B (en) 2003-03-05
GB9922444D0 (en) 1999-11-24

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)