Operation of casing valves system for selective well stimulation and control
US8893787B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2010 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Mar 30, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Casing valves for selective well stimulation and control. A well system includes at least one valve interconnected in a casing string operable via at least one line external to the casing string to selectively control fluid flow between an exterior and interior of the casing string, and the casing string, valve and line being cemented in a wellbore. A method of selectively stimulating a subterranean formation includes: positioning a casing string in a wellbore, the casing string including spaced apart valves operable via a line to selectively control fluid flow between an interior and exterior of the casing string; and for each of multiple intervals of the formation in sequence, stimulating the interval by opening a corresponding one of the valves, closing the remainder of the valves, and flowing a stimulation fluid from the casing string into the interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.