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NO20061295L - Downhole Safety Valve - Google Patents

Downhole Safety Valve

Info

Publication number
NO20061295L
NO20061295L NO20061295A NO20061295A NO20061295L NO 20061295 L NO20061295 L NO 20061295L NO 20061295 A NO20061295 A NO 20061295A NO 20061295 A NO20061295 A NO 20061295A NO 20061295 L NO20061295 L NO 20061295L
Authority
NO
Norway
Prior art keywords
pipe
safety valve
valve
downhole safety
closes
Prior art date
Application number
NO20061295A
Other languages
Norwegian (no)
Inventor
Roddie R Smith
Original Assignee
Weatherford Lamb
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 Weatherford Lamb filed Critical Weatherford Lamb
Publication of NO20061295L publication Critical patent/NO20061295L/en

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
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
    • 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
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
    • E21B34/085—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained with time-delay systems, e.g. hydraulic impedance mechanisms
    • 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
    • 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
    • E21B34/108—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with time delay systems, e.g. hydraulic impedance mechanisms
    • 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
    • E21B34/12—Valve arrangements for boreholes or wells in wells operated by movement of casings or tubings
    • 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
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/05—Flapper valves

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)
  • Safety Valves (AREA)

Abstract

Den foreliggende oppfinnelse tilveiebringer en fremgangsmåte og et apparat for valgvis tetting av en rørboring (204). Rørventilen (200) innbefatter som regel et stengeelement (203) som plasseres i og som stenger rørboringen (204), og et trykkaktivert holdeelement (212) med en første og en motstilt andre stempelflate (209), som åpner og stenger ventilen (200). Rørventilen (200) forhindrer plutselige trykktap i røret (204) og kan styres fra overflaten.The present invention provides a method and apparatus for optionally sealing a pipe bore (204). The pipe valve (200) usually includes a closing element (203) which is placed in and which closes the tube bore (204), and a pressure-activated holding element (212) with a first and an opposite second piston surface (209), which opens and closes the valve (200). . The pipe valve (200) prevents sudden pressure drop in the pipe (204) and can be controlled from the surface.

NO20061295A 2005-03-23 2006-03-21 Downhole Safety Valve NO20061295L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66448705P 2005-03-23 2005-03-23

Publications (1)

Publication Number Publication Date
NO20061295L true NO20061295L (en) 2006-09-25

Family

ID=36383969

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20061295A NO20061295L (en) 2005-03-23 2006-03-21 Downhole Safety Valve

Country Status (3)

Country Link
CA (1) CA2540997A1 (en)
GB (2) GB2424435B (en)
NO (1) NO20061295L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101839117B (en) * 2010-04-21 2014-04-02 中国石油化工股份有限公司 Annulus safety valve
US10787900B2 (en) 2013-11-26 2020-09-29 Weatherford Technology Holdings, Llc Differential pressure indicator for downhole isolation valve
US10107075B2 (en) 2015-03-24 2018-10-23 Weatherford Technology Holdings, Llc Downhole isolation valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373587A (en) * 1980-12-08 1983-02-15 Camco, Incorporated Fluid displacement well safety valve
US4664195A (en) * 1986-01-31 1987-05-12 Otis Engineering Corporation Safety valve
US6988556B2 (en) * 2002-02-19 2006-01-24 Halliburton Energy Services, Inc. Deep set safety valve
US7246668B2 (en) * 2004-10-01 2007-07-24 Weatherford/Lamb, Inc. Pressure actuated tubing safety valve

Also Published As

Publication number Publication date
GB2465928A (en) 2010-06-09
GB2424435B (en) 2010-05-19
GB2465928B (en) 2010-08-04
GB201004979D0 (en) 2010-05-12
CA2540997A1 (en) 2006-09-23
GB0605750D0 (en) 2006-05-03
GB2424435A (en) 2006-09-27

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application