摘要
本文通过分别对非线性和线性反演方法的优缺点进行分析 ,提出了一种求解地震自动剩余静校正问题的两步法。该方法首先利用非线性方法获得线性反演方法的初始解 ,再利用线性反演方法获得最终的高精度解。在非线性反演阶段采用较小的静校正量模型空间 ,加快了非线性反演的收敛速度。模型和实际资料的计算表明 ,该方法较好地解决了获得的静校正量精度越高、计算效率越低的矛盾 ,可用于地表地质条件较为复杂地区的地震资料的静校正处理。
Analyzing the advantages and the shortcomings of linear and non-linear inversion methods,the paper presented a method in two steps for estimation of seismic automatic residual statics.After using non-linear method to obtain initial solution of linear inversion, the method uses linear method to obtain the final high-precision solution.The reduced statics model space has been adopted in non-linear inversion step,accelerating the convergence of non-linear inversion. Model and real data show that the method can better solve the contradiction between desired high-precision statics and poor computational efficiency and can be used for static correction processing of seismic data in the region with more complicated surface-geologic condition.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2003年第1期22-26,共5页
Oil Geophysical Prospecting
