Multi-scale fusion dominant seepage channel three-dimensional modeling method

The invention discloses a multi-scale fusion dominant seepage channel three-dimensional modeling method, and belongs to the field of oil and gas field development. On the basis of the longitudinal high-precision characteristic of logging information, a comprehensive evaluation index capable of recognizing and evaluating a dominant seepage channel formed by sandstone oil reservoir long-term water injection development is constructed, a geologic structure tensor capable of reflecting stratum characteristics is extracted by utilizing the transverse continuous characteristic of seismic data, and then the geologic structure tensor is calculated through an elliptic partial differential equation interpolation method. A three-dimensional model of the dominant seepage channel is formed, and a basis is provided for efficient development of high-water-cut-period oil reservoirs. The method is high in precision and wide in applicability, the problem that an existing method is difficult to identify and evaluate the regiona