网格层析速度建模方法在潜山勘探中的应用

Application of grid tomography velocity modeling method in Qianshan exploration

针对潜山复杂构造地区地震资料速度建模技术进行了深入的研究。在常规的垂向和沿层速度建模基础上,应用了网格层析反演速度建模技术,求得了准确偏移速度模型,最终通过Kirchhoff叠前深度偏移取得了理想的成像效果,为潜山勘探做出了重要贡献。

in this paper,the velocity modeling technology of seismic data in complex tectonic area of Qianshan is studied deeply.Based on the conventional vertical and along layer velocity modeling,the grid tomographic inversion velocity modeling technique is applied to obtain the accurate migration velocity model.Finally,the Kirchhoff prestack depth migration is used to obtain the ideal imaging effect,which has made an important contribution to the exploration of Qianshan.