Swellable packer having thermal compensation
US8607883B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Dec 28, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/128
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A swellable packer for use in a subterranean well can include a seal element with a swellable material which contracts in response to temperature decrease, and a temperature compensator which applies increased force to the seal element in response to temperature decrease. A method of compensating for thermal contraction of a swellable material in a subterranean well can include a temperature of the swellable material increasing in response to installing the swellable material in the well, and a temperature compensator applying an increased force in response to a temperature decrease occurring after the temperature increasing step. A well tool for use in a subterranean well can include a swellable material and a temperature compensator which applies an increased force when the swellable material contracts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.