Wells – Submerged well – With safety or emergency shutoff
Patent
1994-06-30
1996-06-04
Novosad, Stephen J.
Wells
Submerged well
With safety or emergency shutoff
166 53, 166 64, 16625015, 13762418, E21B 3404, E21B 3416, F17D 301
Patent
active
055224652
ABSTRACT:
A method and apparatus for controlling a production facility containing a well that produces subterranean fluids and gas is disclosed. The production facility is connected to a receiving facility by a pipeline having a pipeline pressure. The production facility has a remote control system that has operably associated therewith a controlling valve member, and a safety system containing a surface valve, and a subsurface valve. Generally, the method comprises the steps of setting the following pressures: a pipeline high pressure level, a pipeline low pressure level, a control system upper pressure level, and a control system lower pressure level. Next, the receiving facility is shut-in, and the pipeline pressure is monitored. According to the pressure level achieved in the pipeline, a signal in response thereto is generated, and thereafter a remote control system valve member may be activated thereby closing the valve. Next, the length of the closure may be timed and the pipeline is continuously checked for leaks before the valve member is reopened.
REFERENCES:
patent: 3454083 (1969-07-01), Brooks
patent: 5191937 (1993-03-01), Cook, Sr.
patent: 5385207 (1995-01-01), Cook, Sr.
Domingue C. Dean
Novosad Stephen J.
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