基于伪多道匹配的时移地震互均化方法  

Cross-equalization based on pseudo-multichannel matching in time-lapse seismic

作　　者：李志娜 张敏[1] 李振春[1] 王一惠 徐辉[2] 傅金荣[2] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]中国石化胜利油田物探研究院,山东东营257022

出　　处：《石油地球物理勘探》2015年第6期1083-1088,1030-1031,共6页Oil Geophysical Prospecting

基　　金：国家"973"计划项目(2011CB202402);山东省自然科学基金资助项目(ZR2013DL012);高等学校博士学科点专项科研基金资助课题(20120133120012);中国博士后科学基金(2015M582162)联合资助

摘　　要：为了提高数据匹配的精度,更好地消除两期数据非油气藏区域的地震响应差异,文中提出采用伪多道匹配法代替最小二乘匹配法进行时移地震互均化处理。采用伪多道匹配算法同时对时间、振幅、频率和相位进行约束,将模型道表示为关于时间、振幅、频率和相位的表达式,通过公式推导化简为用四道数据精确表示的模型道表达式。该方法相比传统的最小二乘匹配算法具有更高的匹配精度,可以更好地消除非油气藏的静态差异,反映地下油气藏的动态变化。模型试算及实际资料处理验证了本文方法的有效性。In order to improve the accuracy of data matching,and better eliminate seismic response difference between data of different periods in non-reservoir area, we introduce a pseudo-multichannel matching filter for cross-equalization instead of the least square matching method.Pseudo-multichannel matching algorithm is used to constrain time,amplitude,frequency,and phase.The model channel may be expressed as a function of time,amplitude,frequency,and phase.After derivation,the model channel can be reduced to an expression of four channels by time,amplitude,frequency,and phase as constraints at same time.The proposed method can gain higher matching precision than conventional matching filters.And it can better reflect dynamic changes of reservoirs.Numerical and real data examples prove the effectiveness of the proposed method.

关 键 词：伪多道匹配 最小二乘匹配 时移地震 互均化 

分 类 号：P631[天文地球—地质矿产勘探]