Liquid purification or separation – Processes – Separating
Patent
1978-12-29
1980-11-11
Sever, Frank
Liquid purification or separation
Processes
Separating
166267, B01D 2110
Patent
active
042331544
ABSTRACT:
A separation compartment of a multiphase separation vessel receives production fluid from a petroleum well and that fluid separates by gravity into the gas, oil and water phases in the vessel. An adjustable siphon leads from a water space in the separation compartment to a discharge compartment of the vessel. The level of the discharge from the siphon determines the elevation of an oil phase-water phase interface within the separation compartment and the presence of the desired of the fluid phases at a pickup for power fluid. The siphon includes a removable line that permits a change in the elevation of the outlet of the line into the discharge compartment. Preferably, the discharge compartment comprises an upstanding pipe, the top of which acts as a weir for receiving oil from the separation compartment. Oil from the vessel may pass through a cyclone for further separation of solids from the oil and then introduced by a pump back into the well to act as the power fluid for the well. Excess oil is taken off as product in a product stream together with production gas and water. An alternate embodiment employs an upstream surge vessel that takes surges in production fluid from the well of a greater flow rate than an established rate and directs excess flow directly to the dicharge to bypass the siphon.
REFERENCES:
patent: 2771997 (1956-11-01), Unthank
patent: 3463172 (1969-08-01), Naylor
patent: 3487937 (1970-01-01), Koulovatos
patent: 3759324 (1973-09-01), Mecusker
Kobe Inc.
Sever Frank
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