Screened valve system for selective well stimulation and control
US7950461B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2008 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Nov 21, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well system includes a valve interconnected in a casing string and selectively configurable between first and second configurations via a line external to the casing string, the valve in the first configuration being operable to selectively permit and prevent fluid flow between the casing string exterior and interior, and in the second configuration to selectively filter and prevent fluid flow between the casing string exterior and interior. A method of selectively stimulating a formation includes: positioning a casing string in a wellbore intersecting the formation, the casing string including a valve operable via an external line to selectively permit and prevent fluid flow between the casing string interior and exterior; and stimulating an interval set of the formation by opening the valve, flowing a stimulation fluid from the casing string into the interval set, and then configuring the valve to filter formation fluid which flows into the casing string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.