Abstract
Accurate rock characterization is critical in using resistivity and dielectric methods for source rocks. However, conventional mixing theories cannot address scenarios where the high volume inclusion exists for rocks with anisotropic electrical parameters. In this paper, an electromagnetic numerical technique using finite difference method was developed to investigate the electrical and anisotropic properties of source rocks based on 3D rock Micro-CT images. Numerical experiments were applied to study the effects of pyrites and fluids on the effective resistivity and electronic anisotropy in source rocks. It was found that less than 1% pyrite or brine significantly changed the electric property and enhanced their anisotropy.
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