GB8529974D0 - Hydraulic safety apparatus - Google Patents

Hydraulic safety apparatus

Info

Publication number
GB8529974D0
GB8529974D0 GB858529974A GB8529974A GB8529974D0 GB 8529974 D0 GB8529974 D0 GB 8529974D0 GB 858529974 A GB858529974 A GB 858529974A GB 8529974 A GB8529974 A GB 8529974A GB 8529974 D0 GB8529974 D0 GB 8529974D0
Authority
GB
United Kingdom
Prior art keywords
safety apparatus
hydraulic safety
hydraulic
safety
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.)
Withdrawn
Application number
GB858529974A
Other versions
GB2170330A (en
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.)
ORTOIL SpA
Original Assignee
ORTOIL SpA
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 ORTOIL SpA filed Critical ORTOIL SpA
Publication of GB8529974D0 publication Critical patent/GB8529974D0/en
Publication of GB2170330A publication Critical patent/GB2170330A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/16—Control means therefor being outside the borehole
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/18—Control of fluid pressure with auxiliary non-electric power derived from an external source
    • G05D16/185—Control of fluid pressure with auxiliary non-electric power derived from an external source using membranes within the main valve
GB08529974A 1984-12-05 1985-12-05 Hydraulic safety apparatus for pressure regulating valves supplying well blow out annular preventers Withdrawn GB2170330A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT23898/84A IT1178710B (en) 1984-12-05 1984-12-05 SAFETY HYDRAULIC EQUIPMENT FOR PRESSURE REGULATING VALVES FOR THE SUPPLY OF ANULAR DEVICES FOR THE PREVENTION OF ERUPTION OF WELLS

Publications (2)

Publication Number Publication Date
GB8529974D0 true GB8529974D0 (en) 1986-01-15
GB2170330A GB2170330A (en) 1986-07-30

Family

ID=11210736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08529974A Withdrawn GB2170330A (en) 1984-12-05 1985-12-05 Hydraulic safety apparatus for pressure regulating valves supplying well blow out annular preventers

Country Status (3)

Country Link
GB (1) GB2170330A (en)
IT (1) IT1178710B (en)
NO (1) NO854867L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224587A (en) * 1988-09-15 1990-05-09 Cyril Coleman Oil supply shut-off valve
US4955195A (en) * 1988-12-20 1990-09-11 Stewart & Stevenson Services, Inc. Fluid control circuit and method of operating pressure responsive equipment
US7377311B2 (en) 2005-03-23 2008-05-27 Scallen Richard E Wellhead valves
CN101781978B (en) * 2009-11-30 2012-08-29 四川华宇石油钻采装备有限公司 Integrated control system for safety block valve

Also Published As

Publication number Publication date
IT8423898A1 (en) 1986-06-05
IT1178710B (en) 1987-09-16
NO854867L (en) 1986-06-06
GB2170330A (en) 1986-07-30
IT8423898A0 (en) 1984-12-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)