Wells – Above ground apparatus – Central valve or closure and lateral port
Patent
1985-05-03
1986-10-21
Novosad, Stephen J.
Wells
Above ground apparatus
Central valve or closure and lateral port
166 91, 251 14, E21B 3402, F16K 31122
Patent
active
046179925
ABSTRACT:
An operating system and choke valve actuator mechanism for a plunger lift gas and oil well having a casing and a tubing string. The actuator mechanism has a manual "low stage" setting for the choke valve so that low velocity gas will flow from the tubing string. The system has a control unit responsive to a pressure differential between casing gas (high) and tubing string gas (low) to move the actuator mechanism to a "high stage" setting for the choke valve so that high velocity gas and oil will flow for the tubing string.
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Bui Thuy M.
Cook, II Mack D.
Novosad Stephen J.
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