Real-time adjustable and controllable hanging type underground oil and water separating system

Abstract

The invention discloses a real-time adjustable and controllable hanging type underground oil and water separating system, which comprises an underground sleeve pipe, a water injection oil pipe, an oil extracting oil pipe and a flow rate control valve, wherein the flow rate control valve is arranged at the wellhead part, the aboveground ground is provided with a visual control device, a hanging type three-way joint connected with the oil extracting oil pipe, an oil and water separator and the water injection oil pipe is arranged in the sleeve, the oil and water separator is connected with an electric submersible pump unit, a water injection pressure regulating device is arranged on the water injection oil pipe, a flow rate and pressure monitoring instrument is arranged in the electric submersible pump unit, a flow rate and pressure monitoring instrument and a regulating valve are arranged in the flow rate control valve, monitoring instrument cables and signal transmission cables are respectively connected among the electric submersible pump unit, the water injection pressure regulating device, the flow rate control valve and the visual control device, the visual control device converts received real-time flow rate and pressure signals into visual data to be output, and the work of the whole system is regulated and controlled. The hanging type underground oil and water separating system has the advantages that the stability is high, the treatment capability is high, and the hanging type underground oil and water separating system can be widely applied to an oilfield same-well production injection process.

Description

technical field [0001] The invention relates to an oil exploitation equipment, in particular to a suspended downhole oil-water separation system that can be adjusted in real time. Background technique [0002] Oil-water downhole separation is an emerging oilfield liquid production treatment technology. It installs an oil-water separation device at the bottom of the well, and most of the water in the separated production fluid is directly injected into the formation, and only a part of the oil-rich liquid is lifted to the ground. , thus greatly reducing the burden on the produced liquid water treatment system, which can save corresponding huge costs and prolong the production life of oil wells. Therefore, this technology has attracted great attention from the petroleum industry and related technical fields in recent years. [0003] Foreign countries began research and field tests in the 1990s, and gradually improved and promoted them. The latest downhole oil-water separation...

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Problems solved by technology

[0004] Aiming at the above-mentioned prior art, the present invention provides a suspended downhole oil-water separation system that can be adjusted in real time, which solves the problems of high water content and high cost of liquid production in a single well in high water-cut oilfields, and has high working stability and large processing capacity. Features, can be widely used in oilfield same well production and injection technology

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