GB2291669A - Means in a downhole cement plug system - Google Patents

Means in a downhole cement plug system

Info

Publication number
GB2291669A
GB2291669A GB9520849A GB9520849A GB2291669A GB 2291669 A GB2291669 A GB 2291669A GB 9520849 A GB9520849 A GB 9520849A GB 9520849 A GB9520849 A GB 9520849A GB 2291669 A GB2291669 A GB 2291669A
Authority
GB
United Kingdom
Prior art keywords
plugs
plug
separation
land
separation plugs
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.)
Granted
Application number
GB9520849A
Other versions
GB9520849D0 (en
GB2291669B (en
Inventor
Njal Underhaug
Tarald Gudmestad
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.)
Nodeco AS
Original Assignee
Nodeco 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 Nodeco AS filed Critical Nodeco AS
Publication of GB9520849D0 publication Critical patent/GB9520849D0/en
Publication of GB2291669A publication Critical patent/GB2291669A/en
Application granted granted Critical
Publication of GB2291669B publication Critical patent/GB2291669B/en
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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
    • E21B33/16—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes using plugs for isolating cement charge; Plugs therefor
    • E21B33/165—Cementing plugs specially adapted for being released down-hole

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)
  • Earth Drilling (AREA)

Abstract

A device for remote release of separation plugs for separating two or more liquid mixtures in connection with, e.g., cementing casings in petroleum, steam or deposition wells, consists of a bottom plug (21), a top plug (22) and possibly several separation plugs which are attached to a pipe-like installation tool (20) equipped with ports (24 and 25) for controlling the flow of liquid to the bottom and top plug respectively, thus allowing the separation plugs to be discharged in turn. In order to be able to cover several alternatives when cementing casings with the use of only one plug set, it has been ensured that the drill pipe plugs (8 and 10) do not land and accompany the separation plugs, but land in and are pulled out together with the installation tool. <IMAGE>
GB9520849A 1993-05-07 1994-05-06 Downhole cement plug system Expired - Lifetime GB2291669B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO931684A NO931684D0 (en) 1993-05-07 1993-05-07 Downhole CEMENT PLUG SYSTEM
PCT/NO1994/000086 WO1994027026A1 (en) 1993-05-07 1994-05-06 Means in a downhole cement plug system

Publications (3)

Publication Number Publication Date
GB9520849D0 GB9520849D0 (en) 1995-12-13
GB2291669A true GB2291669A (en) 1996-01-31
GB2291669B GB2291669B (en) 1997-02-05

Family

ID=19896070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9520849A Expired - Lifetime GB2291669B (en) 1993-05-07 1994-05-06 Downhole cement plug system

Country Status (3)

Country Link
GB (1) GB2291669B (en)
NO (1) NO931684D0 (en)
WO (1) WO1994027026A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9525044D0 (en) * 1995-12-07 1996-02-07 Nodeco Ltd Plugs for downhole tools
US5803173A (en) * 1996-07-29 1998-09-08 Baker Hughes Incorporated Liner wiper plug apparatus and method
NO303742B1 (en) * 1996-12-06 1998-08-24 Nodeco As Device for insertion of one or more scratch plugs in an extension year
GB9723581D0 (en) * 1997-11-07 1998-01-07 Weatherford Lamb Plug for use in wellbore operations and apparatus for launching said plug
US6799638B2 (en) 2002-03-01 2004-10-05 Halliburton Energy Services, Inc. Method, apparatus and system for selective release of cementing plugs
US7845400B2 (en) 2008-01-28 2010-12-07 Baker Hughes Incorporated Launching tool for releasing cement plugs downhole
US9797220B2 (en) 2014-03-06 2017-10-24 Weatherford Technology Holdings, Llc Tieback cementing plug system
WO2017089000A1 (en) * 2015-11-23 2017-06-01 Fmc Kongsberg Subsea As Assembly and method of injecting a solidifiable fluid into a well
US10378304B2 (en) * 2017-03-08 2019-08-13 Weatherford Netherlands, B.V. Sub-surface release plug system
US11078750B2 (en) 2018-08-22 2021-08-03 Weatherford Technology Holdings, Llc Plug system
US10502026B1 (en) * 2019-02-08 2019-12-10 Vertice Oil Tools Methods and systems for fracing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO130328B (en) * 1968-06-10 1974-08-12 Jackson Inc B
EP0167285A2 (en) * 1984-06-05 1986-01-08 Halliburton Company Remote cementing plug launching system
US4809776A (en) * 1987-09-04 1989-03-07 Halliburton Company Sub-surface release plug assembly
FR2663678A1 (en) * 1990-06-22 1991-12-27 Schlumberger Cie Dowell Plugs for cementing wells, in particular oil wells and the like, set of plugs for executing a cementing operation and equipment making application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO130328B (en) * 1968-06-10 1974-08-12 Jackson Inc B
EP0167285A2 (en) * 1984-06-05 1986-01-08 Halliburton Company Remote cementing plug launching system
US4809776A (en) * 1987-09-04 1989-03-07 Halliburton Company Sub-surface release plug assembly
FR2663678A1 (en) * 1990-06-22 1991-12-27 Schlumberger Cie Dowell Plugs for cementing wells, in particular oil wells and the like, set of plugs for executing a cementing operation and equipment making application thereof

Also Published As

Publication number Publication date
GB9520849D0 (en) 1995-12-13
WO1994027026A1 (en) 1994-11-24
GB2291669B (en) 1997-02-05
NO931684D0 (en) 1993-05-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20140505