DE60212731D1 - System zur reduzierung von hydrostatischem druck in steigrohren unter verwendung von schimmenden kugeln - Google Patents

System zur reduzierung von hydrostatischem druck in steigrohren unter verwendung von schimmenden kugeln

Info

Publication number
DE60212731D1
DE60212731D1 DE60212731T DE60212731T DE60212731D1 DE 60212731 D1 DE60212731 D1 DE 60212731D1 DE 60212731 T DE60212731 T DE 60212731T DE 60212731 T DE60212731 T DE 60212731T DE 60212731 D1 DE60212731 D1 DE 60212731D1
Authority
DE
Germany
Prior art keywords
hydrostatic pressure
floating balls
tubular tubes
reducing hydrostatic
reducing
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 - Lifetime
Application number
DE60212731T
Other languages
English (en)
Other versions
DE60212731T2 (de
Inventor
George Boyadjieff
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.)
Varco International Inc
Varco IP Inc
Original Assignee
Varco International Inc
Varco IP Inc
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 Varco International Inc, Varco IP Inc filed Critical Varco International Inc
Priority claimed from PCT/US2002/030950 external-priority patent/WO2004029404A1/en
Application granted granted Critical
Publication of DE60212731D1 publication Critical patent/DE60212731D1/de
Publication of DE60212731T2 publication Critical patent/DE60212731T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
    • E21B21/085—Underbalanced techniques, i.e. where borehole fluid pressure is below formation pressure

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)
  • Jet Pumps And Other Pumps (AREA)
DE60212731T 2002-09-27 2002-09-27 System zur Reduzierung von hydrostatischem Druck in Steigrohren unter Verwendung von schwimmenden Kugeln Expired - Lifetime DE60212731T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/030950 WO2004029404A1 (en) 2002-09-27 2002-09-27 System to reduce hydrostatic pressure in risers using buoyant spheres

Publications (2)

Publication Number Publication Date
DE60212731D1 true DE60212731D1 (de) 2006-08-03
DE60212731T2 DE60212731T2 (de) 2006-11-02

Family

ID=37085339

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60212731T Expired - Lifetime DE60212731T2 (de) 2002-09-27 2002-09-27 System zur Reduzierung von hydrostatischem Druck in Steigrohren unter Verwendung von schwimmenden Kugeln

Country Status (1)

Country Link
DE (1) DE60212731T2 (de)

Also Published As

Publication number Publication date
DE60212731T2 (de) 2006-11-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition