摘要
叠前深度偏移是复杂地质构造成象的有力工具,其成象的质量主要取决于所用速度—深度模型的精度。本文根据波场外推理论,给出了层剥离波动方程偏移速度分析方法。该方法利用沿层剩余速度分析直接修改层速度,适用于3D偏移速度分析,已在复杂潜山构造成象中取得较好的效果。
Prestack depth migration is a good tool imaging complex geologic structure. Imaging quality depends mainly onthe precision of used velocity-depth model. Migration velocity analysis method of formation baring wave equation isgiven according to wave field extrapolation theory. The method uses residual velocity of edge-formation to modify di-rectly horizon velocity, which is suitable for 3D migration velocity analysis. The method has been used for imagingcomplex burial hill structure with better effect.
出处
《油气地球物理》
2003年第3期22-25,共4页
Petroleum Geophysics
