【摘要】 速度分析的密度和精度是影响高精度三维复杂断块成像精度的关键因素之一,常规的速度分析方法采用双曲线动校公式来实现,速度分析的密度和精度受到限制。当高精度三维存在各向异性时,旅行时方程是非双曲线方程,应采用双谱分析方法拾取速度和各向异性参数,实现高精度动校正。在YA高精度三维数据处理过程中应用高密度速度分析技术实现了高精度三维逐道的非双曲线动校正,提高了速度分析的密度和精度,改善了地震资料的成像质量。更多还原

【Abstract】 The density and precision of velocity analysis are one of key factors,which influences the imaging precision of high precision 3-D seismic in complex fault blocks.The conventional velocity analysis is carried out by hyperbolic NMO formula,and the density and precision are restricted.When anisotropy is existed in high precision 3-D seismic,the travel time equation is non-hyperbolic,so the bispectral analysis method should be used to pick velocity and anisotropy parameters to realize the high precision dynamic correction.High-density velocity analysis was applied in the data processing of YA high precision 3-D seismic to realize the non-hyperbolic dynamic correction of all traces.As a result,the density and precision of velocity analysis were enhanced,and the quality of seismic data imagine was improved.更多还原