Multifunctional sand-prevention oil-gas separator

Abstract

The invention discloses a multifunctional sand-prevention oil-gas separator. The oil-gas separator comprises an outer pipe, a central pipe and a flow dividing pipe, wherein the central pipe is fixedlyconnected with the flow dividing pipe, and the central pipe and the flow dividing pipe are arranged inside the outer pipe in a sleeved mode; a plurality of sucking and screening holes are formed in the pipe wall of the front end of the outer pipe, the flow dividing pipe corresponds to the rear end of the outer pipe, and liquid inlet holes are formed in the pipe wall of the flow dividing pipe; andspiral sheets are arranged between the central pipe and the outer pipe, and a flow dividing umbrella is arranged between the flow dividing pipe and the outer pipe. According to the multifunctional sand-prevention oil-gas separator, the spiral sheets are adopted for spiral separation, and the flow dividing umbrella is adopted for slip effect separation, so that the two-stage separation effect of liquid flow in the pipe circulation process is achieved, and the oil-gas separator is novel in structure, simple and reliable.

Description

technical field [0001] The invention relates to the technical field of petroleum machinery, in particular to a multifunctional sand-proof oil-gas separator. Background technique [0002] After the oil field enters the middle and late stage of development, with the exploitation of oil wells, the dissolved gas in the crude oil is easy to precipitate prematurely due to the drop of formation pressure, which reduces the filling degree of the oil pump, reduces the efficiency of the oil pump, and even causes air lock. In addition, due to factors such as loose formation cementation and excessive production pressure difference, sand production in the formation is often caused, resulting in increased wear and tear of the oil well pump, which affects the normal production of the oil well. [0003] Practice has proved that the greater the gas-oil ratio of the oil well, the more serious the sand production in the formation. In order to solve the above problems, each oil field usually in...

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Problems solved by technology

Although it has a certain effect, judging from the field application, the effect is poor for oil wells with severe gas and sand; the multi-stage separated gas and sand anchor produced abroad has a good effect, but its structure is complex and the production cost is high. , which limits the range of practical applications

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