WO1996034175A3 - Cementing plug - Google Patents

Cementing plug Download PDF

Info

Publication number
WO1996034175A3
WO1996034175A3 PCT/GB1996/001007 GB9601007W WO9634175A3 WO 1996034175 A3 WO1996034175 A3 WO 1996034175A3 GB 9601007 W GB9601007 W GB 9601007W WO 9634175 A3 WO9634175 A3 WO 9634175A3
Authority
WO
WIPO (PCT)
Prior art keywords
plug
tubular sleeve
sleeve
launching device
darts
Prior art date
Application number
PCT/GB1996/001007
Other languages
French (fr)
Other versions
WO1996034175A2 (en
Inventor
Peter Budde
Richard Lee Giroux
Original Assignee
Weatherford Lamb
Lucas Brian Ronald
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, Lucas Brian Ronald filed Critical Weatherford Lamb
Priority to CA002218106A priority Critical patent/CA2218106C/en
Priority to EP96914271A priority patent/EP0820556B1/en
Priority to DE69609604T priority patent/DE69609604T2/en
Priority to AU57683/96A priority patent/AU710356B2/en
Publication of WO1996034175A2 publication Critical patent/WO1996034175A2/en
Publication of WO1996034175A3 publication Critical patent/WO1996034175A3/en
Priority to NO19974757A priority patent/NO312733B1/en
Priority to NO20016299A priority patent/NO323035B1/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
    • 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
    • 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
    • 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
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads
    • E21B33/05—Cementing-heads, e.g. having provision for introducing cementing plugs
    • 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
    • E21B33/167—Cementing plugs provided with anti-rotation mechanisms, e.g. for easier drill-out
    • 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
    • E21B34/063—Valve or closure with destructible element, e.g. frangible disc

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Types And Forms Of Lifts (AREA)
  • Safety Valves (AREA)
  • Materials For Medical Uses (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

The invention provides a bottom cementing plug (594) which is releasably attached to a top plug (584) by means of a tubular sleeve (550) and shear pins (553). Instead of shear pins a shear ring, which may be segmented, and which is integral with the tubular sleeve, may be arranged. The tubular sleeve (550) comprises first openings (565) which are covered by burst plates (570) for allowing cement to pass after having set the plug on the float shoe at the casing bottom. The tubular sleeve (550) may comprise second openings (554) covered by burst plates (555) to allow the cementing process to be performed in case that the top plug has been launched together with the bottom plug. The invention further provides a dart launching device, where the darts are arranged in a sleeve coaxially with and radially spaced from the housing of the launching device. A fluid diverter is arranged at the top of the launching device for diverting the fluid into the annular space between sleeve and housing in order to prevent pressure overload on the plungers which hold the darts in place before they are launched.
PCT/GB1996/001007 1995-04-26 1996-04-26 Cementing plug WO1996034175A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA002218106A CA2218106C (en) 1995-04-26 1996-04-26 Cementing plug
EP96914271A EP0820556B1 (en) 1995-04-26 1996-04-26 Cementing plug
DE69609604T DE69609604T2 (en) 1995-04-26 1996-04-26 CEMENTING PLUG
AU57683/96A AU710356B2 (en) 1995-04-26 1996-04-26 Cementing plug
NO19974757A NO312733B1 (en) 1995-04-26 1997-10-15 Plug provided with a fastener, as well as plug sets and dispensers comprising such plugs
NO20016299A NO323035B1 (en) 1995-04-26 2001-12-21 Cementing Plug Kit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/429,763 US5553667A (en) 1995-04-26 1995-04-26 Cementing system
US08/429,763 1995-04-26

Publications (2)

Publication Number Publication Date
WO1996034175A2 WO1996034175A2 (en) 1996-10-31
WO1996034175A3 true WO1996034175A3 (en) 1997-01-23

Family

ID=23704654

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/001007 WO1996034175A2 (en) 1995-04-26 1996-04-26 Cementing plug

Country Status (7)

Country Link
US (3) US5553667A (en)
EP (2) EP0820556B1 (en)
AU (1) AU710356B2 (en)
CA (1) CA2218106C (en)
DE (2) DE69609604T2 (en)
NO (2) NO312733B1 (en)
WO (1) WO1996034175A2 (en)

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Also Published As

Publication number Publication date
NO974757D0 (en) 1997-10-15
EP0969183B1 (en) 2004-01-21
NO20016299D0 (en) 2001-12-21
WO1996034175A2 (en) 1996-10-31
CA2218106A1 (en) 1996-10-31
DE69631389D1 (en) 2004-02-26
US5813457A (en) 1998-09-29
EP0969183A2 (en) 2000-01-05
DE69609604D1 (en) 2000-09-07
EP0969183A3 (en) 2000-10-11
NO323035B1 (en) 2006-12-27
AU5768396A (en) 1996-11-18
CA2218106C (en) 2005-06-14
NO974757L (en) 1997-12-10
EP0820556A2 (en) 1998-01-28
US5553667A (en) 1996-09-10
US5787979A (en) 1998-08-04
NO20016299L (en) 1997-12-10
DE69609604T2 (en) 2001-04-12
EP0820556B1 (en) 2000-08-02
AU710356B2 (en) 1999-09-16
NO312733B1 (en) 2002-06-24

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