CA2024347A1 - Sealing assembly for subterranean well packing unit - Google Patents
Sealing assembly for subterranean well packing unitInfo
- 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
Links
- 238000007789 sealing Methods 0.000 title abstract 3
- 238000012856 packing Methods 0.000 title abstract 2
- 238000001125 extrusion Methods 0.000 abstract 3
- 239000011368 organic material Substances 0.000 abstract 2
- 229920000049 Carbon (fiber) Polymers 0.000 abstract 1
- 239000004917 carbon fiber Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 1
- 239000003566 sealing material Substances 0.000 abstract 1
- 238000010008 shearing Methods 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
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599964B1 (en) * | 1991-08-31 | 1999-04-14 | ZWART, Klaas Johannes | Pack-off tool |
| 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 |
| US20150330185A1 (en) | 2012-12-21 | 2015-11-19 | Resource Completion Systems Inc. | Multi-stage well isolation and fracturing |
| US9518441B2 (en) * | 2013-05-07 | 2016-12-13 | Freudenberg Oil & Gas, Llc | Expandable packing element and cartridge |
Family Cites Families (5)
| 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 |
-
1990
- 1990-08-30 CA CA 2024347 patent/CA2024347C/en not_active Expired - Lifetime
- 1990-08-31 GB GB9019051A patent/GB2236129A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB9019051D0 (en) | 1990-10-17 |
| CA2024347C (en) | 2001-05-29 |
| GB2236129A (en) | 1991-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |