Actuator for dual drill string valve and drill string valve configurations therefore
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 23, 2016
Grant Date -
Aug 29, 2013
app pub date -
Feb 28, 2012
filing date -
Feb 28, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A dual drill string actuator includes a piston disposed in a housing. The housing is configured to sealingly couple at its longitudinal ends to an end of a nested dual drill string segment. An upper internal conduit is mounted in the housing proximate one longitudinal end thereof. A lower internal conduit is mounted in the housing proximate the other longitudinal end thereof. The piston is slidably, sealingly engaged between the upper and lower inner conduits and together define an internal fluid flow passage therethrough. The upper inner conduit, the piston and the lower inner conduit also define an external flow passage between respective exterior surfaces thereof and an interior of the housing such that application of fluid pressure to the external flow passage causes movement of the piston.
First Claim
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- 0 Citation Count
- E21B Class
- 0 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 23, 2027 |
