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Impedance Inversion Based on Structure-Oriented Regularization
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE 2020 Annual Conference & Exhibition Online, Dec 2020, Volume 2020, p.1 - 5
Abstract
Regularization methods are widely used in impedance inversion problems to solve the ill-posed problem. At present, some common regularization methods are applied to the poststack seismic inversion problems by imposing isotropic smoothness on impedance. However, isotropic smoothness can blur small-scale geologic features and reduce the resolution of inversion results. To overcome this shortcoming, we have developed a new regularization that imposes smoothness along the orientations of geological structures. Such a structure-oriented regularization is often isotropic in most areas but can be anisotropic in areas where the structural features are anisotropic. Therefore, our method can preserve small-scale structural features and increase the accuracy and lateral continuity of inversion results. The inversion results of synthetic seismic data demonstrate that the proposed method can effectively improve the resolution and accuracy of the inversion results.