测井约束地震特征反演及效果分析

Well Constrained Seismic Character Inversion and Effect Analysis

测井约束地震特征反演是一种多参数地震反演技术 ,它可以综合地质、地震、测井、录井等各类信息求得的储层参数 ,建立三维储层特征模型。其基本思想是依据从三维面元中提取的地震特征信息及其组分 ,结合地质模型及其组分来迭代修改反演的波阻抗或属性模型 ,通过主组分分析及模型优化的方法 ,将优化所得合成地震道与原始地震道进行比较 ,残差最小的反演结果即为最终反演的波阻抗或属性结果。反演结果既包含了地震资料的中频信息 ,又包含了测井资料的高低频信息 ,可以更加有效地进行储层预测和油藏描述 ,进一步提高油田的勘探开发精度。

Well constrained seismic character inversion is a comprehensive techniques of seismic reservoir inversion.This techniques can integrate geologic and make-hole and seismic information etc,the inversion result include high frequency information of well and intermediate frequency information of seismic data.The result may forecast reservoir effectively.The basic idea of this techniques is pick-up seismic character ,and integrate geologic model.Via make use of main component analysis technique.We compare theoretical seismic trace with actual seismic trace and corrected the initial model until a low residual error is obtained.Such inversion technology possess the characteristic of improve resolving power ,and trust seismic data.