Valve for hydraulic fracturing through cement outside casing
US8267178B1 · kind B1 · utility
58Cited by
8References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2011 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Sep 1, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A valve for use in fracing through cement casing in a well allows for flow of cement down the well during the cementing process and in the open position allows for fracing fluid to be directed through the cement casing for fracturing the formation adjacent the valve. The valve is constructed so as to reduce the likelihood of the valve to jam as a result of cement or other foreign material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.