A three-phase separator

Abstract

The invention discloses a three-phase separator which is provided with a tank (1), a cyclone separator (3), a transformer (9), a distributor (19), a plate electrode (6) and the like. The inner cavity of the tank is divided into a gas-liquid separation chamber (21) and an oil-water separation chamber (22) through a separator plate (18). A gas returning pipe (5) is arranged between the top of the cyclone separator and the top of the gas-liquid separation chamber. A spiral plate (31) is arranged on the inner wall of the cylindrical shell of the cyclone separator. The distributor is arranged at the lower part of the oil-water separation chamber, and a liquid conveying pipe (15) is arranged between the lower part of the gas-liquid separation chamber and the distributor. The plate electrode is a single-layer horizontal plate electrode, is arranged on the upper part of the oil-water separation chamber and is composed of a steel wire rope with an insulating layer and several insulating support plates and constant-pitch rods. The three-phase separator provided by the invention is mainly used for three-phase separation of oil, gas and water phases of crude oil produced from oilfields and oil wells.

Description

technical field [0001] The invention belongs to the technical field of oil field surface treatment equipment, and relates to a three-phase separator used for separating oil, gas and water from crude oil produced by oil wells in oil fields. Background technique [0002] Crude oil contains water and natural gas (and sand) after being extracted from oil wells, and it needs to be separated before transportation. The treated purified crude oil and natural gas are exported as products, and the separated water can be used as reinjection water for oil wells. Three-phase separators are generally used for the separation of crude oil produced from oil wells in oil fields, and conventional three-phase separators are separated by gravity sedimentation. However, with the increase of the water content of the produced crude oil, the water content of the crude oil processed by a single conventional three-phase separator is still too high, which affects the subsequent treatment, and even cau...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a three-phase separator to solve the problem of low oil-water separation efficiency in conventional three-phase separators, and the gas-liquid separation and oil-water separation in three-phase separators with electrode plates. The effect is not good enough, and there are problems such as short circuit between two adjacent electrode plates.

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