A METHOD FOR ANALYSIS OF GEOLOGICAL STRUCTURE EVOLUTION AND DEFORMATION PROCESS

Abstract

The invention provides an analysis method of a geological tectonic evolution and deformation process. The method of the invention includes the following steps that: the current formation information and geological characteristics of a target area are acquired; a tectonic evolution process and historical formation information are obtained through inversion according to the current formation information and geological characteristics; an initial discrete element model is generated according to the historical formation information of the target area, wherein the initial discrete element model is composed of randomly-generated particles of different radiuses; tectonic deformation is performed on the initial discrete element model according to the tectonic evolution process, so that a tectonic model can be obtained; whether the geological characteristics of the tectonic model and the geological characteristics of the current formation information satisfy preset similarity is judged; and if the geological characteristics of the tectonic model and the geological characteristics of the current formation information do not satisfy the preset similarity, the material parameters of the particles of various historical formations in the initial discrete element model are adjusted, tectonic deformation is performed on the parameter-adjusted initial discrete element model until the geological characteristics of a tectonic model which is obtained through the deformation of the parameter-adjusted initial discrete element model and the geological characteristics of the current formation information satisfy the preset similarity.

Description

technical field [0001] Embodiments of the present invention relate to exploration technology, and in particular, to a method for analyzing evolution and deformation processes of geological structures. Background technique [0002] The important work of oil and gas exploration is to analyze the reservoir properties of the target area, so as to analyze whether there are reservoirs or reserves in the area. [0003] The prior art uses physical simulation to infer the geological structure evolution and deformation process of the target area, and then infers the reservoir properties of the target area according to the inferred geological structure evolution and deformation process of the target area. Specifically, a large number of experiments are performed to simulate the geological structure evolution and geological deformation process of the target area by selecting the material of the stratum close to the target area. [0004] This method cannot obtain the stress and strain i...

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Problems solved by technology

[0005] The embodiment of the present invention provides an analysis method for geological structure evolution and deformation process to solve the problem that existing methods cannot obtain the stress and strain inside the region

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