Abstract:Faults and fractures have weak response on seismic sections and its edge structure information is easy to be weakened during the data acquisition and processing.Therefore,we analyze the nonlinear anisotropic diffusion filtering theory on the basis of previous studies.By introducing a fault operator,the anisotropic diffusion filtering is analyzed.The fault operator is a bright spot to judge the discontinuity of seismic axis,its size reflects the degree of discontinuity.When the bright spot is close to a fault and crack,the value of the fault operator is small with a weak diffusion,and vice versa.So using the fault operator can not only ensure the filtering effect,but also protect the effective geological information.Both numerical simulations and real data applications show that the anisotropic diffusion filter based on fault operator can effectively remove the noise and enhance the break-point energy.Seismic attributes can be easily extracted from the data processed by the proposed method.
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