Process pipe column

Abstract

The invention discloses a process pipe column, and belongs to the field of oil and gas exploitation. The process pipe column sequentially comprises an oil pipe, an oil extraction unit, an oil-water separator, a water injection unit and a non-return element from top to bottom, wherein the oil extraction unit comprises a first submersible screw pump and a first flow guide pipe. The first end of the oil pipe is used for being fixed to a wellhead of an oil and gas well, the second end of the oil pipe is connected with the first end of the first submersible screw pump through the non-return element, the second end of the first submersible screw pump extends into the first flow guide pipe, and a water outlet of the oil-water separator is connected with one end of the water injection unit. The first submersible screw pump is used for sucking separated petroleum along the first flow guide pipe and lifting the petroleum to the ground surface along the oil pipe, and the water injection unit is used for injecting separated formation water into a water injection layer. By means of the process pipe column, oil-water separation can be achieved in an oil well, the separated petroleum is lifted to the ground surface, the separated formation water is injected into the water injection layer, and therefore the labor intensity of workers is reduced.

Description

technical field [0001] The application relates to the field of oil and gas production, in particular to a process string. Background technique [0002] At present, the main domestic oil fields have entered the late stage of high water-cut development, and the average water content of oil in oil wells can reach more than 90%. After the oil with high water content is lifted to the surface, it usually needs to be processed by a gathering and transportation system to separate the oil from the oil. Formation water, after which oil is stored, is injected into the formation through the formation water reinjection system. However, on the one hand, the process of injecting formation water into the formation through the formation water reinjection system is labor-intensive, and on the other hand, the economic cost of the formation water reinjection system is high, resulting in economic waste. Contents of the invention [0003] The application provides a process pipe column, which c...

AI Technical Summary

Problems solved by technology

[0003] This application provides a process string, which can solve the problem of high labor intensity

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