Wells – Automatic
Patent
1985-09-23
1986-12-16
Suchfield, George A.
Wells
Automatic
137870, 166 64, 166 68, 166 91, 166250, 166312, 166371, 166902, E21B 3706, E21B 3708, E21B 4312, E21B 4400
Patent
active
RE0323047
ABSTRACT:
A gravity system, the only moving parts of which are the valves, uses only the system pressures, and opening and closing of valves to feed treatment liquids to an oil well. The chemical treatment liquid is stored in a drum above a volume chamber. The volume chamber has five lines connected to it, each with a valve. A feed line with a feed valve connects the volume chamber to the treatment drum. A vent line with a vent valve vents the top part of the volume chamber to the atmosphere. A liquid pressure line with a pressure valve connects the flow line (connected to the oil well eduction tube) to the volume chamber. A flush line with a flush valve connects the bottom of the volume chamber to the well annulus. A gas line with a gas valve connects the volume chamber to the annulus. When the vent valve and feed valve are open and all other valves are closed, the volume chamber will fill with liquid by gravity from the chemicals within the treatment drum. Then when the pressure valve and the flush valve are open, the treatment chemicals which have been measured into the volume chamber will be flushed by the produced fluids within the flow line back into the annulus of the oil well. Then opening the flush valve and the gas valve and closing all other valves will purge the volume chamber of all liquid thereby returning it to a condition to be filled again as first described above.
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Peterson Robert C.
Suchfield George A.
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