Wells – Automatic
Patent
1992-12-03
1994-09-06
Britts, Ramon S.
Wells
Automatic
166 651, 166 751, E21B 4300
Patent
active
053439414
ABSTRACT:
An apparatus for treating oil and gas wells having a tubing string extending into the earth's surface for the removal of fluids; from a hydrocarbon productive reservoir and a casing string surrounding the tubing string for protective purposes with a measured volume of treating fluid. The instant apparatus includes: a chemical treatment fluid storage tank in fluid communication with a mixing vessel, a chemical pump for transporting chemical treatment fluid from the storage tank to the mixing vessel, a remote actuating and timing mechanism and associated valves, a mixing vessel, and flow lines connecting the assembled apparatus to a well. When in use, produced well fluids may be diverted to the mixing vessel containing treatment fluid supplied by the pump thereby causing the contents of the vessel to be flushed into the casing/tubing annulus of the well for treatment purposes. Discharge of fluids from the mixing vessel is halted by returning the valve linking the tubing string and the vessel to a closed position. Upon closure of the valve, the mixing vessel will be returned to a fluid packed condition whereby the vessel is essentially filled with produced well fluids. The chemical injection pump is then activated to deliver a predetermined volume of treatment fluid from the storage tank to the mixing vessel for discharge at a later time.
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Britts Ramon S.
Litman Richard C.
Tsay Frank S.
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