Physical Model Experimental Device for Measuring Displacement Pressure Gradient of Plane Radial Flow

Abstract

The invention relates to a physical model experiment device for measuring the displacement pressure gradient of plane radial flow, which is characterized in that the device is a detachable disc-shaped device, which includes a disc-shaped sand filling container, a pressure measuring point A flat plate and a fastening plate; the upper part of the disc-shaped sand filling container is provided with a flat plate with pressure measuring points, and the lower part is provided with a fastening plate; the flat plate with pressure measuring points and the fastening plate penetrate the surrounding area through fastening bolts The disc-shaped sand filling container is tightly sealed; the flat plate with pressure measuring points is provided with 1 injection point or 4 extraction points; wherein the injection point is set at the center of the flat plate, and the extraction points are symmetrical Distributed around the flat plate; wherein the plate with pressure measuring points is provided with a plurality of pressure measuring points; layout.

Description

technical field [0001] The invention relates to a physical model experiment device for measuring the displacement pressure gradient of plane radial flow. Background technique [0002] A large number of water flooding experiments have proved that the efficiency of water flooding is affected by external dynamic conditions such as injection ratio and displacement pressure gradient. Domestic oilfields generally have a water cut above 90%, and high injection multiples often lead to ineffective circulation of injected water, resulting in low oil displacement efficiency and uneconomical. Under the general situation of low international oil prices, water plugging and profile control operations aimed at increasing the displacement pressure gradient are favored by more and more oilfield companies as a low-cost and efficient means of controlling water and stabilizing oil production. It is self-evident that the understanding of the displacement pressure distribution of the formation is...

AI Technical Summary

Problems solved by technology

At present, the routine experiments for the study of formation pressure in the laboratory include core displacement experiments and visual plate experiments, and there is no experimental device specially used to study the distribution of plane displacement pressure gradients.

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