GB8521937D0 - Drill pipe - Google Patents

Drill pipe

Info

Publication number
GB8521937D0
GB8521937D0 GB858521937A GB8521937A GB8521937D0 GB 8521937 D0 GB8521937 D0 GB 8521937D0 GB 858521937 A GB858521937 A GB 858521937A GB 8521937 A GB8521937 A GB 8521937A GB 8521937 D0 GB8521937 D0 GB 8521937D0
Authority
GB
United Kingdom
Prior art keywords
drill pipe
drill
pipe
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Withdrawn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
GB858521937A
Other versions
GB2164981A (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.)
Hughes Tool Co
Original Assignee
Hughes Tool 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
Application filed by Hughes Tool Co filed Critical Hughes Tool Co
Publication of GB8521937D0 publication Critical patent/GB8521937D0/en
Publication of GB2164981A publication Critical patent/GB2164981A/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Withdrawn legal-status Critical Current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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
GB08521937A 1984-09-28 1985-09-04 Inside blowout preventer Withdrawn GB2164981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65528284A 1984-09-28 1984-09-28

Publications (2)

Publication Number Publication Date
GB8521937D0 true GB8521937D0 (en) 1985-10-09
GB2164981A GB2164981A (en) 1986-04-03

Family

ID=24628279

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08521937A Withdrawn GB2164981A (en) 1984-09-28 1985-09-04 Inside blowout preventer

Country Status (5)

Country Link
CA (1) CA1234540A (en)
DE (1) DE3533292A1 (en)
FR (1) FR2571092A1 (en)
GB (1) GB2164981A (en)
NO (1) NO853801L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117262945A (en) * 2023-11-21 2023-12-22 上海华菱电站成套设备股份有限公司 Mine wellhead protection device for mine hoist

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584645A (en) * 1969-12-30 1971-06-15 Cook Testing Co Flow control valve for wells
US3850191A (en) * 1973-01-09 1974-11-26 Brown Oil Tools Check valve assembly
US3867985A (en) * 1974-01-11 1975-02-25 Thelton E Wilkinson Apparatus for and method of preventing blow-out while removing a fish within wash pipe from a borehole
US4049015A (en) * 1974-08-08 1977-09-20 Brown Oil Tools, Inc. Check valve assembly
GB2048335B (en) * 1979-05-10 1982-12-15 Lynch Davis Inc Re-entry cementing float shoe
US4263936A (en) * 1979-10-09 1981-04-28 Brown Oil Tools, Inc. Erosion resistant check valve assembly
GB2102474A (en) * 1981-07-13 1983-02-02 Hughes Tool Co Inside downhole blowout preventer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117262945A (en) * 2023-11-21 2023-12-22 上海华菱电站成套设备股份有限公司 Mine wellhead protection device for mine hoist
CN117262945B (en) * 2023-11-21 2024-01-23 上海华菱电站成套设备股份有限公司 Mine wellhead protection device for mine hoist

Also Published As

Publication number Publication date
FR2571092A1 (en) 1986-04-04
CA1234540A (en) 1988-03-29
NO853801L (en) 1986-04-01
GB2164981A (en) 1986-04-03
DE3533292A1 (en) 1986-04-24

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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)