Expandable member for downhole tool
US8464800B2 · kind B2 · utility
2Cited by
9References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2009 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Aug 29, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of forming a downhole apparatus comprises the steps of providing a body having a longitudinal axis and forming an expanding portion on the body from multiple layers of a partially or substantially cured material around the longitudinal axis of the body. The material is selected to increase in volume on exposure to at least one predetermined fluid, such as a wellbore fluid. Apparatuses formed by the method include wellbore packers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.