Well-ground frequency domain electromagnetic detection method, device and electronic equipment

Abstract

This invention provides a well-to-surface frequency domain electromagnetic detection method, device, and electronic equipment. It includes constructing a holistic computational domain based on a three-dimensional geological model, setting a perfectly matched layer based on stretched coordinate transformation outside the model, and performing adaptive mesh generation based on posterior error estimation within this domain. This generates a locally refined unstructured tetrahedral mesh in the target area. On this tetrahedral mesh, first- or second-order vector finite element methods are used in H (curl) space to spatially discretize and solve Maxwell's equations in the frequency domain, achieving well-to-surface frequency domain electromagnetic forward modeling. This invention, through the synergy of adaptive meshing and vector finite element methods within a differentiable framework, balances accuracy and efficiency, improves forward modeling stability and imaging resolution, and provides a scientific basis for improving efficiency and saving costs in mineral resource exploration and development.

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