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AU493029B2 - Pressure operated isolation valve for use ina well testing apparatus and its method of operation - Google Patents

Pressure operated isolation valve for use ina well testing apparatus and its method of operation

Info

Publication number
AU493029B2
AU493029B2 AU87661/75A AU8766175A AU493029B2 AU 493029 B2 AU493029 B2 AU 493029B2 AU 87661/75 A AU87661/75 A AU 87661/75A AU 8766175 A AU8766175 A AU 8766175A AU 493029 B2 AU493029 B2 AU 493029B2
Authority
AU
Australia
Prior art keywords
testing apparatus
isolation valve
pressure operated
well testing
operated isolation
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.)
Expired
Application number
AU87661/75A
Other versions
AU8766175A (en
Inventor
L. Farley Robertt. Evans David
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.)
Halliburton Co
Original Assignee
Halliburton Co
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
Priority claimed from US05/588,991 external-priority patent/US3976136A/en
Application filed by Halliburton Co filed Critical Halliburton Co
Application granted granted Critical
Publication of AU8766175A publication Critical patent/AU8766175A/en
Publication of AU493029B2 publication Critical patent/AU493029B2/en
Expired legal-status Critical Current

Links

AU87661/75A 1975-06-20 1975-12-18 Pressure operated isolation valve for use ina well testing apparatus and its method of operation Expired AU493029B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/588,991 US3976136A (en) 1975-06-20 1975-06-20 Pressure operated isolation valve for use in a well testing apparatus and its method of operation
USUS588,991 1975-06-20

Publications (2)

Publication Number Publication Date
AU8766175A AU8766175A (en) 1977-06-23
AU493029B2 true AU493029B2 (en) 1977-06-23

Family

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