Wells – Above ground apparatus – With valve on cap or head
Patent
1984-02-23
1985-12-10
Leppink, James A.
Wells
Above ground apparatus
With valve on cap or head
166 651, E21B 3402
Patent
active
045573255
ABSTRACT:
In a petroleum well fracturing context, where the fracturing fluid is an inert gas such as nitrogen, the valve which must be opened to vent the well following high pressurization of the formation for the desired period, is provided with an electric motor actuator which preferably is powered from the 12 volt electrical power of a truck at the site, and reversibly remotely actuated by a transmitter/receiver set of the type commonly used for opening and closing garage doors from a small unit such as may be hand held.
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Dang Hoang C.
Leppink James A.
McJunkin Corporation
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