Two-dimensional visual oil displacement experimental device and experimental method in oil and gas exploitation process

Abstract

The invention provides a two-dimensional visual oil displacement experimental device and experimental method in an oil and gas exploitation process. According to the device, a model bottom plate and a model cover plate are bonded to form a sealed accommodating cavity, a plurality of glass beads are bonded in the accommodating cavity, a plurality of flow guide holes are formed in the positions, opposite to the containing cavity, of the model cover plate in a penetrating mode and communicating with a liquid injection pipeline to form a model injection well and a model production well, a valve is arranged on the liquid injection pipeline, a horizontal groove is formed in the side, facing the glass beads, of the model cover plate or the model bottom plate, one end of the groove communicates with the containing cavity, the other end penetrates through the model body to form a model horizontal well, and a clamper clamps the end part of the model body. The technical scheme has the beneficial effects that the oil displacement process under different conditions can be simulated, and different well types and well spacings can be simulated by changing the positions, the number and the spacing of the model injection wells and the model production wells. By changing the size, number and spacing of the glass beads, homogeneous reservoirs or heterogeneous reservoirs with different permeability can be simulated.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a two-dimensional visual oil displacement experimental device and an experimental method in the process of oil and gas exploitation. Background technique [0002] Enhancing the recovery of oil and gas fields is an important stage in the production process of oil and gas fields. For different types of reservoirs, the following related technologies have been formed: conventional water flooding, polymer flooding, hot water flooding, steam huff and puff, steam flooding and high-temperature gel profile control, Pre-crosslinked gel particles (PPG) for plugging adjustment, etc. [0003] Laboratory physical simulation is one of the important means to study oil and gas development. For the above technologies, relevant one-dimensional core flooding experimental devices, two-dimensional proportional physical model equipment, three-dimensional similar physical simulatio...

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Problems solved by technology

However, the sand filling model is complex in operation, high in experiment cost, long in research period, and cannot intuitively describe the distribution of chemical agents injected during chemical flooding.

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