Retrievable swellable packer
US9540901B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2014 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Jul 11, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well tool can include a swellable material, and a degradable material which supports the swellable material, but which degrades in response to contact with a selected fluid in a well. A packer for use in a subterranean well can include a swellable material, and a degradable material which supports the swellable material. A method of unsetting a packer in a subterranean well can include the steps of, after the packer has been set in the well, exposing a degradable material of the packer to a selected fluid, thereby degrading the degradable material, and a seal element of the packer being unsupported by the degradable material in response to the exposing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.