Multi-disciplinary crossed natural fracture three-dimensional quantitative characterization method and system

Abstract

The invention discloses a multidisciplinary crossed natural fracture three-dimensional quantitative characterization method and system, and belongs to the technical field of petroleum and natural gas exploration and development. The method comprises the following steps: carrying out quantitative description and statistics on natural fractures according to geological data and coring data of a research area; calculating the crack strength by using coring data; analyzing the anisotropy of shear wave energy differentiation through logging data; calculating a b value by using the microseismic data; calculating a seismic curvature attribute according to the curvature of the curve; the number, strength and distribution condition of the natural fractures in the stratum are determined according to the results; from these analyses, geologic features and related geological activities are further interpreted and instructive suggestions are provided for engineering design and geological exploration. According to the method, the accuracy of an analysis result is improved, shale gas exploration and development benefits are improved, data errors and uncertainty are reduced, and more accurate engineering decisions are supported.

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