Simulation method and device for core pore network distribution and electronic equipment

Abstract

The embodiment of the invention provides a simulation method and device for core pore network distribution and electronic equipment. The method comprises the following steps: acquiring three-dimensional matrix data of a rock core sample; the three-dimensional matrix data comprises a plurality of skeleton pixels and a plurality of pore pixels; any point in the pore pixels is selected as a sphere center, an inscribed sphere tangent to the skeleton pixel boundary closest to the pore pixels is searched, and inscribed spheres corresponding to the multiple pore pixels are obtained; filtering redundant balls in the inscribed balls corresponding to the plurality of pore pixels to obtain a plurality of maximum balls; wherein the redundant balls are the inscribed balls, which are included in the other inscribed balls, in the inscribed balls; determining the minimum balls among the maximum balls with the intersection relationship in the plurality of maximum balls; and by taking the maximum sphere as a pore and the minimum sphere as a pore throat, simulating to obtain a pore network of the rock core sample, thereby improving the accuracy of acquiring the distribution of the rock pore network.

Description

technical field [0001] The embodiments of this specification relate to the technical field of oil recovery, and in particular to a method, device and electronic equipment for simulating the distribution of core pore networks. Background technique [0002] The calculation of physical parameters such as reservoir physical properties and liquid fluidity of underground porous media is an extremely important task in reservoir physical engineering, hydrophysics and even environmental engineering; some macroscopic parameters such as capillary pressure can be obtained through experiments and relative permeability, these two parameters are two crucial parameters in the EOR process of carbon dioxide flooding; however, these experimental techniques are often difficult to restore the entire displacement process; for example, the three-phase fluid in porous media Experimentation is extremely difficult, especially in low saturation regions. [0003] The current general practice in the pe...

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Problems solved by technology

[0005] This method requires great care in sample preparation, try to avoid the disturbance of the sample, pay attention to the integrity of the slice surface and the distance between two adjacent slices should not be too large to avoid spatial discontinuity, so the time cost of this test method Higher, and higher requirements for sample preparation operations, thus affecting the accuracy of the obtained rock pore network distribution

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