A method for establishing a three-dimensional percolation model of a volume fracturing horizontal well in a tight reservoir
A tight oil reservoir and volumetric fracturing technology, which is applied in the field of petroleum development and model establishment, can solve the problems of not considering the thickness of tight oil reservoirs, not considering the intersection of different fractures, etc., and achieve fast calculation speed, efficient development and accurate simulation calculated effect
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[0054] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.
[0055] 1. Establish the basic solution of 3D seepage based on the boundary element method
[0056] 1. Establish a point source physical model of infinite tight reservoir space
[0057] It is assumed that there is a point in the infinite dual-media tight oil reservoir, and the liquid at this point is produced instantaneously, and the liquid at this point will cause the flow of liquid at other positions in the tight oil reservoir. The point source physical model of infinite tight reservoir space is as follows: image 3 shown.
[0058] Dual-matrix tight reservoirs are described by the Warren-Root model. The matrix system is the main storage space for liquid, and the natural microfracture system is the main flow channel for liquid.
[0059] 2. Establish a mathematical model corresponding to the point source physical model
[0060] The pro...
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