Multi power launch system for pressure differential device
US9388675B2 · kind B2 · utility
1Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2013 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Oct 14, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An injection mandrel may include a valve controlling the flow of the injection fluid. A valve actuator operatively connected to the valve sequentially generates a first predetermined pressure and a larger second predetermined pressure in the valve. The valve actuator generates the second predetermined pressure in the valve in response to a predetermined change in a pressure at an annulus surrounding the mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.