GB2579478A - Slotted backup ring assembly - Google Patents
Slotted backup ring assembly Download PDFInfo
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract 17
- 238000001125 extrusion Methods 0.000 claims abstract 13
- 230000004888 barrier function Effects 0.000 claims 12
- 238000002955 isolation Methods 0.000 claims 4
- 230000004323 axial length Effects 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000000034 method Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000003351 stiffener Substances 0.000 abstract 1
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)
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.
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)
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)
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)
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 |
-
2018
- 2018-07-12 GB GB2001325.6A patent/GB2579478B/en not_active Expired - Fee Related
- 2018-07-12 CA CA3069867A patent/CA3069867C/en active Active
- 2018-07-12 WO PCT/US2018/041880 patent/WO2019014482A1/en active Application Filing
-
2020
- 2020-02-05 NO NO20200146A patent/NO20200146A1/en not_active Application Discontinuation
Patent Citations (5)
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 |