GB2579478A - Slotted backup ring assembly - Google Patents

Slotted backup ring assembly Download PDF

Info

Publication number
GB2579478A
GB2579478A GB2001325.6A GB202001325A GB2579478A GB 2579478 A GB2579478 A GB 2579478A GB 202001325 A GB202001325 A GB 202001325A GB 2579478 A GB2579478 A GB 2579478A
Authority
GB
United Kingdom
Prior art keywords
assembly
sealing element
mandrel
cylindrically shaped
shaped segment
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
GB2001325.6A
Other versions
GB202001325D0 (en
GB2579478B (en
Inventor
Deng Guijun
K Wakefield John
Patterson Adam
M Kendall Alxander
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
Baker Hughes a GE Co LLC
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
Priority claimed from US15/649,363 external-priority patent/US20180023366A1/en
Application filed by Baker Hughes Inc, Baker Hughes a GE Co LLC filed Critical Baker Hughes Inc
Publication of GB202001325D0 publication Critical patent/GB202001325D0/en
Publication of GB2579478A publication Critical patent/GB2579478A/en
Application granted granted Critical
Publication of GB2579478B publication Critical patent/GB2579478B/en
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
    • 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
    • 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
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Centrifugal Separators (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

A unique backup ring against ends of a sealing element features axial slots extending part way along a cylindrical segment of the backup ring. The slots end in rounded openings to relieve stress and a part of the cylindrical shape of the backup ring is solid. The slotted end of the cylindrical portion is tapered in section toward the end overlapping the sealing element. The face of the backup ring away from the sealing element is tapered and rides on an adjacent tapered surface away from the mandrel during the setting. The tapered seal end of the backup ring bends to reach the surrounding tubular before the balance of the cylindrical portion reaches the surrounding tubular. Extrusion along the mandrel is stopped by a mandrel seal on an adjacent wedge ring. The mandrel end of the backup ring has a peripheral stiffener to lend rigidity.

Claims (15)

We claim:
1. An extrusion barrier assembly for a mandrel (105) mounted sealing element assembly (20) of a borehole isolation device, comprising: at least one extrusion barrier ring (24') surrounding the mandrel (105) and initially abutting and radially overlapping at least one end of the sealing element assembly (20), said extrusion barrier ring (24') characterized by a cylindrically shaped segment (100) which initially overlaps the sealing element assembly (20) and features at least one axially oriented slot (108).
2. The assembly of claim 1, wherein: said at least one slot (108) is shorter than an axial length of said cylindrically shaped segment (100).
3. The assembly of claim 2, wherein: said at least one slot (108)extends for less than half the axial length of said cylindrically shaped segment (100).
4. The assembly of claim 2, wherein: said at least one slot (108) extends to an end (106) of said cylindrically shaped segment (100).
5. The assembly of claim 4, wherein: said cylindrically shaped segment (100) narrows in section toward said end (106).
6. The assembly of claim 2, wherein: said cylindrically shaped segment (100) tapers in section for an axial length coincident with said at least one slot (108).
7. The assembly of claim 2, wherein: said at least one slot (108) comprises a plurality of axially extending slots (108) from an end of said cylindrically shaped segment (100).
8. The assembly of claim 7, wherein: said slots (108) are evenly spaced and end in said cylindrically shaped segment (100) with a rounded end (110).
9. The assembly of claim 5, wherein: said end makes initial contact with the borehole before the balance of said cylindrically shaped segment (100).
10. The assembly of claim 1, wherein: said ring comprising a tapered segment (102) extending from said cylindrically shaped segment (100) and toward said mandrel (105) where said tapered segment (102) ends in a thicker portion for stiffness.
11. The assembly of claim 10, wherein: said tapered segment (102) selectively movable axially to contact a wedge ring as an intermediate ring between said tapered segment (102) and said wedge ring is forced out radially away from the mandrel (105).
12. The assembly of claim 11, wherein: said wedge ring having opposed tapered sides to a peak spaced apart from the mandrel (105), said thicker portion of said tapered segment (102) moving away from the mandrel (105) along one of said opposed tapered sides as said cylindrically shaped segment (100) makes contact with the borehole.
13. An extrusion barrier assembly for a mandrel (105) mounted sealing element assembly (20) of a borehole isolation device, comprising: at least one extrusion barrier ring (24') surrounding the mandrel (105) and initially abutting and radially overlapping at least one end of the sealing element assembly (20), said extrusion barrier ring (24') characterized by a cylindrically shaped segment (100) which initially overlaps the sealing element assembly (20) and features a tapered cross-section that narrows in a direction toward said end.
14. A treatment method using borehole isolation device comprising an extrusion barrier assembly for a mandrel (105) mounted sealing element assembly (20), comprising: providing at least one extrusion barrier ring (24') surrounding the mandrel (105) and initially abutting and radially overlapping at least one end of the sealing element assembly (20), said extrusion barrier ring (24') characterized by a cylindrically shaped segment (100) which initially overlaps the sealing element assembly (20) and features at least one axially oriented slot (108); performing a treatment against said sealing element assembly (20) into at least one formation adjacent the borehole.
15. A treatment method using borehole isolation device comprising an extrusion barrier assembly for a mandrel (105) mounted sealing element assembly (20), comprising: providing at least one extrusion barrier ring (24') surrounding the mandrel (105) and initially abutting and radially overlapping at least one end of the sealing element assembly (20), said extrusion barrier ring (24') characterized by a cylindrically shaped segment (100) which initially overlaps the sealing element assembly (20) and features a tapered cross- section that narrows in a direction toward said end; performing a treatment against said sealing element assembly (20) into at least one formation adjacent the borehole.
GB2001325.6A 2017-07-13 2018-07-12 Slotted backup ring assembly Expired - Fee Related GB2579478B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/649,363 US20180023366A1 (en) 2016-01-06 2017-07-13 Slotted Backup Ring Assembly
PCT/US2018/041880 WO2019014482A1 (en) 2017-07-13 2018-07-12 Slotted backup ring assembly

Publications (3)

Publication Number Publication Date
GB202001325D0 GB202001325D0 (en) 2020-03-18
GB2579478A true GB2579478A (en) 2020-06-24
GB2579478B GB2579478B (en) 2022-01-26

Family

ID=65001500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2001325.6A Expired - Fee Related GB2579478B (en) 2017-07-13 2018-07-12 Slotted backup ring assembly

Country Status (4)

Country Link
CA (1) CA3069867C (en)
GB (1) GB2579478B (en)
NO (1) NO20200146A1 (en)
WO (1) WO2019014482A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11142978B2 (en) * 2019-12-12 2021-10-12 Baker Hughes Oilfield Operations Llc Packer assembly including an interlock feature

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120018143A1 (en) * 2010-07-23 2012-01-26 Weatherford/Lamb, Inc. Swellable Packer Anchors
US20120191340A1 (en) * 2009-10-05 2012-07-26 Bae Systems Plc Navigation systems
US20120217025A1 (en) * 2011-02-28 2012-08-30 Smith International, Inc. Metal expandable element back-up ring for high pressure/high temperature packer
US20140290946A1 (en) * 2013-03-29 2014-10-02 Weatherford/Lamb, Inc. Big gap element sealing system
US20150308214A1 (en) * 2012-12-07 2015-10-29 Schlumberger Technology Corporation Fold Back Swell Packer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10704355B2 (en) * 2016-01-06 2020-07-07 Baker Hughes, A Ge Company, Llc Slotted anti-extrusion ring assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120191340A1 (en) * 2009-10-05 2012-07-26 Bae Systems Plc Navigation systems
US20120018143A1 (en) * 2010-07-23 2012-01-26 Weatherford/Lamb, Inc. Swellable Packer Anchors
US20120217025A1 (en) * 2011-02-28 2012-08-30 Smith International, Inc. Metal expandable element back-up ring for high pressure/high temperature packer
US20150308214A1 (en) * 2012-12-07 2015-10-29 Schlumberger Technology Corporation Fold Back Swell Packer
US20140290946A1 (en) * 2013-03-29 2014-10-02 Weatherford/Lamb, Inc. Big gap element sealing system

Also Published As

Publication number Publication date
CA3069867A1 (en) 2019-01-17
GB202001325D0 (en) 2020-03-18
WO2019014482A1 (en) 2019-01-17
GB2579478B (en) 2022-01-26
NO20200146A1 (en) 2020-02-05
CA3069867C (en) 2022-07-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20230712