Novel on-line continuous preparation profile control oil displacement device

Abstract

The invention discloses a novel on-line continuous preparation profile control oil displacement device which comprises an incoming water decompression system, a disperse dissolution system and an automatic control system. The incoming water decompression system comprises a high-pressure end and a low-pressure end; the high-pressure end is connected with a water storage tank through a high-pressure water supply pipeline provided with an adjusting valve A; a water level indicator is arranged at the bottom of the water storage tank; the low-pressure end is composed of a centrifugal pump, a filter, an adjusting valve B and a flowmeter A which are sequentially connected through water supply pipelines; the disperse dissolution system comprises a hopper, an unloader, an airtight funnel, a powder air pipeline, a hydraulic jet device and a dissolution tank; and the automatic control system is composed of a programming module, a DCS system, an adjusting valve, frequency conversion equipment and a flowmeter. According to the novel on-line continuous preparation profile control oil displacement device, higher working condition adaptability, control stability and using safety are achieved, on-line preparation of a high concentration polymer solution is achieved, meanwhile, preparation processes for multiple aspects can be achieved, a wider system selective space is achieved accordingly, and the purpose of reducing system selective cost is achieved.

Description

technical field [0001] The invention relates to the technical field of oil field development method for stabilizing oil and controlling water, in particular to a novel on-line continuous configuration profile control and flooding device. Background technique [0002] Profile control and flood control are effective measures to stabilize oil and control water in the process of oilfield development. By squeezing the injection of agents with different system strengths into the formation, blocking the dominant water flow channel, adjusting the direction of water flooding, and expanding the swept volume of water injection, the recovery factor can be improved. Purpose. At present, profile control and flood control use wind to send dry powder to mix with incoming water through a water-powder mixer, initially dissolve it in a dissolution tank, and then transfer it to a maturation tank for maturation, and then squeeze it into the wellhead by an injection pump. During this period, two...

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Problems solved by technology

During the period, two aging tanks were involved, and only intermittent preparation could be carried out, and continuous liquid preparation could not be realized, and the highest concentration of polymer preparation was 6000ppm, and high-concentration preparation was limited.

Another online profile control and flooding process is to use emulsion polymer to pump out through a metering plunger pump, and then inject it into the well after mixing it with other additives. The main problem of this process is that the cost of emulsion polymer is high, and due to the The effective content of the substance is low, and it is impossible to guarantee a high viscosity of the well-entry fluid

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