P-Wave Velocity Analysis Method Based on HTI Media Theory

Abstract

Abstract: With the continuous improvement of exploration precision, the isotropic media theory can no longer meet the current velocity analysis and normal moveout (NMO) processing of wide-azimuth and far-offset seismic data. Using wide-azimuth P-wave seismic data, velocity analysis method based on horizontal transverse isotropy (HTI) media theory is discussed in this paper. According to anisotropic theory, velocity azimuth anisotropic elliptic equation has been obtained. The least-square fitting method has been applied to solve elliptic equation parameters. The azimuth velocity has been calculated by elliptic equation and used for NMO processing. The method has been applied to process the wide-azimuth seismic data in HXC-GMZ area in western Sichuan successfully.

Key words: P wave, horizontal transverse isotropy (HTI) media, velocity, azimuth, anisotropy

CLC Number:

P631.443.2

MA Zhao-jun, TANG Jian-ming. P-Wave Velocity Analysis Method Based on HTI Media Theory[J]. Xinjiang Petroleum Geology, 2010, 31(4): 426-428.

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P-Wave Velocity Analysis Method Based on HTI Media Theory

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