CA2721468C - Soupape de surpression bidirectionnelle de fond de trou - Google Patents

Soupape de surpression bidirectionnelle de fond de trou Download PDF

Info

Publication number
CA2721468C
CA2721468C CA2721468A CA2721468A CA2721468C CA 2721468 C CA2721468 C CA 2721468C CA 2721468 A CA2721468 A CA 2721468A CA 2721468 A CA2721468 A CA 2721468A CA 2721468 C CA2721468 C CA 2721468C
Authority
CA
Canada
Prior art keywords
valve
valve body
force
recesses
mid
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 - Fee Related
Application number
CA2721468A
Other languages
English (en)
Other versions
CA2721468A1 (fr
Inventor
Steffen Evertsen
Olav Evertsen
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.)
Welltec AS
Original Assignee
Welltec AS
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 Welltec AS filed Critical Welltec AS
Publication of CA2721468A1 publication Critical patent/CA2721468A1/fr
Application granted granted Critical
Publication of CA2721468C publication Critical patent/CA2721468C/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Lift Valve (AREA)
  • Safety Valves (AREA)

Abstract

L'invention concerne une soupape de surpression bidirectionnelle de fond de trou (1) qui comprend un boîtier de soupape (2), et dans laquelle un premier corps de soupape (4) est forcé avec une première force contre un premier siège de soupape (8) et un second corps de soupape (6) est forcé contre un second siège de soupape (26) positionné dans le premier corps de soupape (4) avec une force inférieure à la première force, la première force et la seconde force agissant dans des directions opposées.
CA2721468A 2007-01-08 2008-01-07 Soupape de surpression bidirectionnelle de fond de trou Expired - Fee Related CA2721468C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20070060A NO326033B1 (no) 2007-01-08 2007-01-08 Anordning ved nedihulls toveis overtrykksventil
NO20070060 2007-01-08
PCT/NO2008/000002 WO2008085057A1 (fr) 2007-01-08 2008-01-07 Soupape de surpression bidirectionnelle de fond de trou

Publications (2)

Publication Number Publication Date
CA2721468A1 CA2721468A1 (fr) 2009-07-17
CA2721468C true CA2721468C (fr) 2015-06-23

Family

ID=39608859

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2721468A Expired - Fee Related CA2721468C (fr) 2007-01-08 2008-01-07 Soupape de surpression bidirectionnelle de fond de trou

Country Status (3)

Country Link
CA (1) CA2721468C (fr)
NO (1) NO326033B1 (fr)
WO (1) WO2008085057A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2574720T3 (en) 2011-09-30 2015-06-01 Welltec As Well Injection Tools

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO308324B1 (no) * 1991-08-08 2000-08-28 Expro North Sea Ltd Testventil for bruk i en borerørteststreng, og fremgangsmÕte for Õ trekke opp teststrengen
US5358048A (en) * 1993-04-27 1994-10-25 Ctc International Hydraulic port collar
US5368098A (en) * 1993-06-23 1994-11-29 Weatherford U.S., Inc. Stage tool
US6237683B1 (en) * 1996-04-26 2001-05-29 Camco International Inc. Wellbore flow control device
US5842521A (en) * 1997-01-29 1998-12-01 Baker Hughes Incorporated Downhole pressure relief valve for well pump
GB2360802B (en) * 2000-03-30 2002-05-22 Baker Hughes Inc Zero drill completion and production system
US6729393B2 (en) * 2000-03-30 2004-05-04 Baker Hughes Incorporated Zero drill completion and production system
NO20030840L (no) * 2003-02-24 2004-08-25 Nils Reimers Anordning ved rotasjonsventil
US7377327B2 (en) * 2005-07-14 2008-05-27 Weatherford/Lamb, Inc. Variable choke valve
NO325699B1 (no) * 2005-08-18 2008-07-07 Peak Well Solutions As Anordning ved sementeringsventil

Also Published As

Publication number Publication date
NO20070060L (no) 2008-07-09
NO326033B1 (no) 2008-09-01
WO2008085057A1 (fr) 2008-07-17
CA2721468A1 (fr) 2009-07-17

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20220107