Downhole tool sealing system with cylindrical biasing member with narrow width and wider width openings
US5749585A · kind A · utility
100Cited by
14References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/128
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sealing system, particularly useful for packers and anchors, is disclosed. The sealing element or elements are of a nonelastomeric material and are configured with a feature that can add a biasing force on one or both sides of the nonelastomeric sealing element(s) to allow the sealing element(s) to maintain the seal despite temperature or pressure fluctuations in the wellbore. The apparatus allows a packer with a nonelastomeric seal to be set at a broad range of downhole temperatures. The system includes a biasing member in the form of a cylindrical element having narrow width and wider width openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.