【摘要】 随着油气田精细勘探对地震数据分析精度的要求越来越高,方位各向异性成为必须考虑的重要因素之一。地下裂缝导致地震波场呈现方位各向异性的特征,地震波反射振幅随炮检距和方位角的变化而变化。运用地震波近似反射系数公式推出裂缝介质的弹性参数反演公式,通过模型对反演公式进行验证,反演结果能够满足精度要求。更多还原

【Abstract】 With the higher requirement of oil-gas field exploration on the accuracy of seismic data analysis,azimuthal anisotropy is one important factor has to be considered.The existence of cracks underground leads to a seismic wave field characteristic of azimuthal anisotropy.The seismic wave reflection amplitude varies with offset and azimuth change.Using seismic-wave reflection coefficient approximate inversion formula for the introduction of cracks in elastic medium parameters inversion formula,the model is used to verify inversion formula.And the inversion results can satisfy the precision requirement.更多还原