GB2158857B - Improvements in and relating to marine casing strings - Google Patents

Improvements in and relating to marine casing strings

Info

Publication number
GB2158857B
GB2158857B GB08509792A GB8509792A GB2158857B GB 2158857 B GB2158857 B GB 2158857B GB 08509792 A GB08509792 A GB 08509792A GB 8509792 A GB8509792 A GB 8509792A GB 2158857 B GB2158857 B GB 2158857B
Authority
GB
United Kingdom
Prior art keywords
relating
casing strings
marine casing
marine
strings
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
GB08509792A
Other versions
GB2158857A (en
GB8509792D0 (en
Inventor
William Alan Turner
John Drummond Mcgugan
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.)
HUNTING OILFIELD SERVICES
Original Assignee
HUNTING OILFIELD SERVICES
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 HUNTING OILFIELD SERVICES filed Critical HUNTING OILFIELD SERVICES
Publication of GB8509792D0 publication Critical patent/GB8509792D0/en
Publication of GB2158857A publication Critical patent/GB2158857A/en
Application granted granted Critical
Publication of GB2158857B publication Critical patent/GB2158857B/en
Expired 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/001—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor specially adapted for underwater drilling
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB08509792A 1984-05-15 1985-04-17 Improvements in and relating to marine casing strings Expired GB2158857B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848412343A GB8412343D0 (en) 1984-05-15 1984-05-15 Marine casing strings

Publications (3)

Publication Number Publication Date
GB8509792D0 GB8509792D0 (en) 1985-05-22
GB2158857A GB2158857A (en) 1985-11-20
GB2158857B true GB2158857B (en) 1987-10-07

Family

ID=10560966

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848412343A Pending GB8412343D0 (en) 1984-05-15 1984-05-15 Marine casing strings
GB08509792A Expired GB2158857B (en) 1984-05-15 1985-04-17 Improvements in and relating to marine casing strings

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848412343A Pending GB8412343D0 (en) 1984-05-15 1984-05-15 Marine casing strings

Country Status (1)

Country Link
GB (2) GB8412343D0 (en)

Also Published As

Publication number Publication date
GB8412343D0 (en) 1984-06-20
GB2158857A (en) 1985-11-20
GB8509792D0 (en) 1985-05-22

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970417