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Estimating interval anisotropy parameter for pre-stack depth migration using a least-squares method
Estimating interval anisotropy parameter for pre-stack depth migration using a least-squares method
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机译:使用最小二乘法估算叠前深度偏移的间隔各向异性参数
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摘要
An apparatus and a method for estimating interval anellipticity parameter by inversing effective anellipticity parameter in the depth domain using a least-squares method. One embodiment of interval anellipticity parameter estimator includes: 1) an interface configured to receive seismic data and borehole information; 2) a depth convertor configured to obtain a function of depth of effective anisotropy parameter based on said borehole information; 3) an inverse transformer configured to set up said function of depth of effective anisotropy parameter as a least-squares fitting problem based on said P-wave data; and 4) an iterative solver configured to use iterative methods to solve said least-squares fitting problem and to obtain an anisotropy model containing interval anellipticity parameter.
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