CA2024347A1 - Sealing assembly for subterranean well packing unit - Google Patents

Sealing assembly for subterranean well packing unit

Info

Publication number
CA2024347A1
CA2024347A1 CA 2024347 CA2024347A CA2024347A1 CA 2024347 A1 CA2024347 A1 CA 2024347A1 CA 2024347 CA2024347 CA 2024347 CA 2024347 A CA2024347 A CA 2024347A CA 2024347 A1 CA2024347 A1 CA 2024347A1
Authority
CA
Canada
Prior art keywords
cone
effect
extrusion
organic material
cooperating
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
CA 2024347
Other languages
French (fr)
Other versions
CA2024347C (en
Inventor
Mike A. Luke
Patrick C. Stone
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.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes 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 Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of CA2024347A1 publication Critical patent/CA2024347A1/en
Application granted granted Critical
Publication of CA2024347C publication Critical patent/CA2024347C/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
    • E21B33/12—Packers; Plugs
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • E21B33/1216—Anti-extrusion means, e.g. means to prevent cold flow of rubber packing

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)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Gasket Seals (AREA)

Abstract

In subterranean wells, it is common to effect the radial expansion of an annular organic sealing element into sealing engagement between a tubular inner body and the inner wall of a well conduit, such as a well casing. Extrusion of the organic material has been encountered between the inner surface of upper and lower cone elements and the exterior of a tubular body portion and also between the inclined surfaces of upper and lower cone elements and the cooperating surfaces of cone rings. The first mentioned extrusion path is eliminated by forming a generally radial surface on the inner end of the upper and lower cones and inserting a carbon fiber filled organic material in the resulting annular chamber. The extrusion path between rhe inclined surface of the cone and the cooperating surface of the cone ring is minimized by utilizing the forces exerted by the compressed sealing material of the packing element to effect the shearing of the vertex portion of a packer ring along a plane that corresponds exactly to the inclined surface of the cone rang.
CA 2024347 1989-08-31 1990-08-30 Sealing assembly for subterranean well packing unit Expired - Lifetime CA2024347C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40166489A 1989-08-31 1989-08-31
US401,664 1989-08-31

Publications (2)

Publication Number Publication Date
CA2024347A1 true CA2024347A1 (en) 1991-03-01
CA2024347C CA2024347C (en) 2001-05-29

Family

ID=23588690

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2024347 Expired - Lifetime CA2024347C (en) 1989-08-31 1990-08-30 Sealing assembly for subterranean well packing unit

Country Status (2)

Country Link
CA (1) CA2024347C (en)
GB (1) GB2236129A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0599964T3 (en) * 1991-08-31 1999-10-25 Klaas Johannes Zwart Packaging Tools
US7108065B2 (en) 2002-12-19 2006-09-19 Schlumberger Technology Corporation Technique for preventing deposition products from impeding the motion of a movable component
US8839874B2 (en) * 2012-05-15 2014-09-23 Baker Hughes Incorporated Packing element backup system
AU2013362802A1 (en) 2012-12-21 2015-07-09 Resource Completion Systems Inc. Multi-stage well isolation
US9518441B2 (en) * 2013-05-07 2016-12-13 Freudenberg Oil & Gas, Llc Expandable packing element and cartridge

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109493A (en) * 1962-04-30 1963-11-05 Baker Oil Tools Inc Subsurface well apparatus with packing structures
US4326588A (en) * 1980-02-19 1982-04-27 Baker International Corporation Well tool having knitted wire mesh seal means and method of use thereof
US4452463A (en) * 1981-09-25 1984-06-05 Dresser Industries, Inc. Packer sealing assembly
US4611658A (en) * 1984-09-26 1986-09-16 Baker Oil Tools, Inc. High pressure retrievable gravel packing apparatus
US4745972A (en) * 1987-06-10 1988-05-24 Hughes Tool Company Well packer having extrusion preventing rings

Also Published As

Publication number Publication date
GB2236129A (en) 1991-03-27
CA2024347C (en) 2001-05-29
GB9019051D0 (en) 1990-10-17

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Legal Events

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