Deformable plug and seal well system
US9677370B2 · kind B2 · utility
6Cited by
40References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2014 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Jun 6, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well system includes a drop plug element and an internal plug seat in an internal flow path of a well tubing. At least one of the plug seat or the drop plug element includes a polymer that is deformable, having a first stiffness when subjected to a first strain rate, to allow the drop plug element to pass through the plug seat. The polymer resists deformation, having a second, higher stiffness when subjected to a second, higher strain rate, to resist allowing the plug element to pass through the plug seat and to seal the plug element and plug seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.