Oil well produced liquid four-phase separator and manufacturing method thereof

Abstract

The invention discloses an oil well produced liquid four-phase separator and a manufacturing method thereof. The separator comprises a shell. A gas outlet of the shell is provided with an exhaust ball float valve. The exhaust ball float valve is connected with a first flow meter through a gas transmission line. A flow valve is connected with a check valve, an overflowing valve and a second flow meter through gas transmission lines. The first flow meter is connected with a pressure gauge. The second flow meter is connected with an oil drainage ball float valve through an oil outlet pipeline. A mist catcher is arranged in an inner cavity of the shell. A liquid inlet is formed in the lower portion of the mist catcher. A spiral umbrella plate is arranged under the liquid inlet. A pore plate is arranged under the spiral umbrella plate. A water discharge ball float valve and a balance valve are arranged at a water outlet of the shell. A sand face detector is arranged in a sand storage cavity at the bottom of the shell. A sand discharge outlet is connected with the bottom of the shell. An electronic control valve is arranged under the sand discharge outlet. During usage, the ball float valves automatically open and close valve ports through the differences of buoyancy of floats in liquid of all phases and automatically discharge oil, water and gas. The oil well produced liquid four-phase separator has the advantages of capable of reducing production cost, avoiding mutual carrying of all phases and achieving mechanical automation.

Description

technical field [0001] The invention relates to the technical field of oilfield sewage reinjection, in particular to a four-phase separator for oil well production fluid and a manufacturing method thereof. technical background [0002] At present, most oil fields in my country have entered the middle and late stage of oil exploitation, and the water content in the produced fluid is 70-80%, and some oil fields even reach as high as 90%, and with the increase of mining time, the water content continues to increase, so The amount of waste water produced in my country's oil fields is very large. If such a large amount of produced water is directly discharged outside, it will cause very serious environmental pollution problems and waste precious water resources at the same time. If the oily wastewater is treated and reinjected into the formation to supplement the pressure of the formation, not only can avoid environmental pollution, but also save a lot of water resources. Treatm...

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Problems solved by technology

[0003] At present, the four-phase separator has the following problems: (1) The conventional four-phase separator in the oil field is bulky, which is not suitable for the separation of wellhead production fluid; (2) The gas-liquid carryover at the separator outlet is serious, and the separation quality is low; (3) The separator is not good enough. Adapt to pressure separation; manual control of the separator, low level of automation

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