Changeable well seal tool
US10107064B2 · kind B2 · utility
4Cited by
44References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2014 |
| Grant date | Oct 23, 2018 |
| 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 seal tool includes a base tubing and a seal element carried on an exterior of the base tubing. The seal element includes a polymer changeable between a compressed state and a sealing state. The seal element has a first stiffness in response to a first strain rate of the polymer and a second, substantially higher stiffness in response to a second, higher strain rate of the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.