Isolation system comprising a plug and a circulation valve and method of use
US7210535B2 · kind B2 · utility
2Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2005 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Jul 6, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An isolation system for an oil and gas well is described wherein the system comprises an isolation section and a first isolation device integral with the section and a second isolation device sealingly engaged to the section. The first isolation device may be a pressure-actuated valve and the second isolation device may be a plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.