Selectively activatable and deactivatable wellbore pressure isolation device
US8733449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2011 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Feb 10, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87917
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus comprising a tubular body defining a flowbore, a first valve that, when activated, restricts fluid communication via the flowbore in a first direction and allows fluid communication in a second direction, and, when deactivated, allows fluid communication in the first and second directions, a first sleeve slidable from a first to a second position that, when in the first position, the first valve is activated, and, when in the second position, the first valve is deactivated, a second valve, that, when activated, restricts fluid communication in the first direction and allows fluid communication in the second direction, and, when deactivated, allows fluid communication in the first and second directions, and a second sleeve slidable from a first to a second position, that, when in the first position, the second valve is deactivated, and, when in the second position, the second valve is activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.