Visual polymer flow regulation oil washing experiment unit

Abstract

The invention discloses a visual polymer flow regulation oil washing experiment unit, which comprises a liquid tank, a plunger pump, an intermediate polymer container, an intermediate water container,a hole density control valve bank, a support, a box type holder, a discharge valve bank, a discharge pipe and a remaining oil distribution physical model, wherein the inlet of the plunger pump is connected to the liquid tank, the intermediate polymer container and the intermediate water container are mounted in parallel between the outlet of the plunger pump and the hole density control valve bank, the remaining oil distribution physical model is mounted in the box type holder, the inlet of the box type holder communicates with the hole density control valve bank, the outlet communicates withthe discharge valve bank, and the discharge pipe is connected to the discharge valve bank. The visual polymer flow regulation oil washing experiment unit has the beneficial effects that the structureis simple, the practicability is high, and the distribution of remaining oil and the effect of exploiting the remaining oil under the action of polymer as a flow regulator can be correctly reflected.

Description

technical field [0001] The invention relates to a visual polymer flow regulation and oil washing experimental device, which belongs to the technical field of remaining oil development in old oilfields. Background technique [0002] At present, many oilfields in my country have entered the stage of high water-cut oil recovery in the middle and late stage of development. Due to the complex geological conditions of my country's oilfields and the large differences in the properties of crude oil, the remaining oil in the ground after water injection development reaches about 60%-70%. It is one of the most concerned focuses in current petroleum exploration and development, and is the core technology of oilfield development. Displacement experiment is an important means to study the effect of tapping the remaining oil potential. At present, most of the existing displacement experiments use experimental devices such as plexiglass, sand-filled tubes, and actual cores. [0003] Experi...

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Problems solved by technology

[0003] Experimental devices such as plexiglass, sand-packing tubes, and actual cores are highly simplified for actual reservoirs. Simple use of multiple sand-packing tubes or regular cuboid and cylindrical cores to represent reservoirs cannot correctly reflect the remaining oil in the formation. The distribution in the middle can only be used for polymer plugging pressure test and polymer filling shape simulation, which cannot reflect the development effect of remaining oil under the flow regulating effect of polymer

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