Active mud valve system
US8348642B2 · kind B2 · utility
2Cited by
18References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Sep 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7771
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A downhole tool pumping apparatus comprising a body and an active valve block. The body comprises a cavity housing a reciprocating piston defining first and second chambers within the cavity. The active valve block comprises a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.