Ballistically compatible backpressure valve

Details Ballistically compatible backpressure valve Ballistically compatible backpressure valve

2011-04-19

2011-04-19

Stephenson, Daniel P (Department: 3676)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S381000

Reexamination Certificate

active

07926572

ABSTRACT:
A backpressure valve. The backpressure valve may be configured to maintain a substantially controlled pressure in coiled tubing uphole thereof while simultaneously being compatible with a ballistically actuated tool downhole thereof. The valve may include a housing with an uphole chamber in alignment with the coiled tubing and downhole chamber in alignment with the ballistically actuated tool. A gate mechanism disposed between the uphole and downhole chambers may thus be employed to receive a ballistic actuator from the uphole chamber for dispensing into the downhole chamber without sacrifice to pressure control within the coiled tubing.

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patent: 2009/0045368 (2009-02-01), Cowie et al.

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