Three-dimensional simulation visualization method for shale gas fracturing fracture extension process

Abstract

The invention discloses a three-dimensional simulation visualization method for a shale gas fracturing fracture extension process, which comprises the following steps: S1, designing a fracture three-dimensional visualization model which consists of a main fracture, a branch fracture and a secondary fracture; s2, storing three-dimensional crack width simulation data calculated by the crack extension model; s3, defining a node data structure; s4, detecting and separating crack width simulation data of each cluster; s5, calculating a main fracture starting point and an end point of each cluster;s6, calculating a main crack extension track of each cluster; s7, calculating a branch crack extension track of each cluster; s8, calculating a secondary fracture extension track of each cluster; s9,drawing main cracks of each cluster; and S10, drawing branch cracks and secondary cracks of each cluster. The method is used for simulating the geometrical morphology of the crack, the generation process of gradual extension of the crack can be displayed, and therefore the problem of unbalanced crack density distribution can be solved.

Description

technical field [0001] The invention relates to the field of data visualization, in particular to a three-dimensional simulation visualization method for the shale gas fracturing fracture extension process. Background technique [0002] At present, the visualization technology of oil and gas production provides an effective judgment basis for the optimization of the production and construction process. Since shale gas mining often adopts hydraulic fracturing technology, the fracturing process occurs in the shale layer about 4,000 meters underground, and the formation and extension of artificial fractures in shale are invisible. The existing numerical simulation technology calculates the opening of artificial fractures, and mainly displays the fracture area and its width graphically in the form of a heat map. At present, the commonly used display methods are mainly two-dimensional heat map and three-dimensional grid heat map. The former can only reflect the partial profile i...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention aims to provide a three-dimensional simulation and visualization method for the shale gas fracturing fracture propagation process, which is used to simulate the fracture geometry, Show the generation process of the gradual extension of cracks, which can solve the problem of uneven distribution of crack density

Images