Fractured formations show very strong azimuthal anisotropy, causing great difficulties in exploration.
裂缝性地层表现出很强的各向异性，勘探难度很大。
For azimuthal anisotropy seismic exploration, it is very important to separate the fast and slow shear waves splitting in this type of anisotropic media.
在各向异性地震波勘探中分离快、慢横波技术是关键环节。
The maximum azimuthal anisotropy inferred from the azimuthal distribution method is decreased by about 30% because of dispersion of the azimuthal Angle of the reaction plane.
对于方位角方法，反应平面方位角的离散使方位角分布最大非对称性的计算值比真值下降了约30%。
Theory and real data show that vertically aligned fractures can induce azimuthal anisotropy. 3D P-wave seismic exploration is an effective and economic method for detecting fractures.
理论和实践表明，垂直定向排列的裂缝能够诱导方位各向异性，三维P波地震是一种经济有效的裂缝勘探方法。
Theory and real data show that vertically aligned fractures can induce azimuthal anisotropy. 3D P-wave seismic exploration is an effective and economic method for detecting fractures.
理论和实践表明，垂直定向排列的裂缝能够诱导方位各向异性，三维P波地震是一种经济有效的裂缝勘探方法。
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