Bi-directional pressure assisted sealing packers
US4924941A · kind A · utility
13Cited by
6References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Oct 30, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/124
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed are packers for use with a gravel pack system in an oil or gas well. The packers are of both the releasable and non-releasable, or sump type. The packers are designed so that after they are set or actuated and they seal against the casing wall or the well bore, fluid pressure in either axial direction on the packer seal will increase the energizing force on the seals. This self-energizing feature is accomplished with selectively disposed and sized annular seals on telescoping members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.