Flow stop valve
US9677376B2 · kind B2 · utility
1Cited by
99References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2014 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Aug 20, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7835
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A flow stop valve positionable in a downhole tubular, and a method, in which the flow stop valve is in a closed position when a pressure difference between fluid outside the downhole tubular and inside the downhole tubular at the flow stop valve is below a threshold value, thereby preventing flow through the downhole tubular. The flow stop valve is in an open position when the pressure difference between fluid outside the downhole tubular and inside the downhole tubular at the flow stop valve is above a threshold value, hereby permitting flow through the downhole tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.