GB8902378D0 - Improvements relating to valves - Google Patents

Improvements relating to valves

Info

Publication number
GB8902378D0
GB8902378D0 GB898902378A GB8902378A GB8902378D0 GB 8902378 D0 GB8902378 D0 GB 8902378D0 GB 898902378 A GB898902378 A GB 898902378A GB 8902378 A GB8902378 A GB 8902378A GB 8902378 D0 GB8902378 D0 GB 8902378D0
Authority
GB
United Kingdom
Prior art keywords
valves
improvements relating
relating
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Withdrawn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
GB898902378A
Other versions
GB2215369A (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.)
HY RAM ENG CO
Original Assignee
HY RAM ENG 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 HY RAM ENG CO filed Critical HY RAM ENG CO
Publication of GB8902378D0 publication Critical patent/GB8902378D0/en
Publication of GB2215369A publication Critical patent/GB2215369A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
    • E21B34/102—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position
    • E21B34/103—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position with a shear pin
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
GB8902378A 1988-02-04 1989-02-03 Drill string circulating valve Withdrawn GB2215369A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888802498A GB8802498D0 (en) 1988-02-04 1988-02-04 Improvements relating to valves

Publications (2)

Publication Number Publication Date
GB8902378D0 true GB8902378D0 (en) 1989-03-22
GB2215369A GB2215369A (en) 1989-09-20

Family

ID=10631058

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888802498A Pending GB8802498D0 (en) 1988-02-04 1988-02-04 Improvements relating to valves
GB8902378A Withdrawn GB2215369A (en) 1988-02-04 1989-02-03 Drill string circulating valve

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888802498A Pending GB8802498D0 (en) 1988-02-04 1988-02-04 Improvements relating to valves

Country Status (1)

Country Link
GB (2) GB8802498D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8909892D0 (en) * 1989-04-28 1989-06-14 Exploration & Prod Serv Well control apparatus
GB2315082B (en) * 1996-07-10 2000-12-06 Klaas Johannes Zwart Downhole apparatus
GB9715930D0 (en) * 1997-07-28 1997-10-01 Smith International Bypass valve closing means
GB2346397A (en) * 1999-02-03 2000-08-09 Sofitech Nv Annulus pressure activated discharge valve for enhanced fluid return flow

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970147A (en) * 1975-01-13 1976-07-20 Halliburton Company Method and apparatus for annulus pressure responsive circulation and tester valve manipulation
US3981360A (en) * 1975-07-30 1976-09-21 Cook Testing Co. Well tubing drain
US4324293A (en) * 1980-04-29 1982-04-13 Halliburton Services Circulation valve
BR8502716A (en) * 1984-06-08 1986-02-12 Soderberg Res & Dev UNION INCLUDING A GEM TUBE SEWER VALVE SUITABLE FOR USE IN A PROBE HOLE TUBE COLUMN, GEM TUBE SEWER VALVE SUITABLE FOR USE IN A PROBE HOLE TUBE COLUMN, SUITABLE TUBE COLUMN FOR USE IN A FITTING COLUMN PROBE AND PROCESS TO OPERATE A VALVE DEVICE

Also Published As

Publication number Publication date
GB8802498D0 (en) 1988-03-02
GB2215369A (en) 1989-09-20

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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)