井间资料约束下地震波阻抗反演方法研究

井间资料约束下地震波阻抗反演方法研究

杨勤勇^1，2，韩立国¹，曹辉²，王德利¹，陈国金²,许卓¹

1.吉林大学地球探测科学与技术学院，长春 130026;2.中石化集团南京石油物探研究所，南京 210014

收稿日期:2006-01-17 修回日期:1900-01-01 出版日期:2006-05-26 发布日期:2006-05-26
通讯作者: 杨勤勇

Crosswell Seismic Constrained Acoustic Impedance Inversion

YANG Qin-yong^1,2, HAN Li-guo¹,CAO Hui²,WANG De-li¹,CHEN Guo-jin²,XU Zhuo¹

1.College of GeoExploration Science and Technology,Jilin University, Changchun 130026,China;2.Nanjing Institute of Geophysical Prospecting, Nanjing 210014, China

Received:2006-01-17 Revised:1900-01-01 Online:2006-05-26 Published:2006-05-26
Contact: YANG Qin-yong

摘要/Abstract

摘要： 采用多井约束的随机逆反演方法，结合井间地震反射成像与测井资料，首先对反射成像后的井间地震数据进行测井约束的波阻抗反演，进而从反演剖面中抽取一定量的反演道作为虚拟井数据，结合测井数据对地面地震数据进行井地联合反演。理论数据和实际数据的试算表明，井地联合反演可以为地面地震测井约束反演提供更多的约束条件，从而提高了地面地震反演的精度。

关键词: 井间地震, 约束反演, 虚拟井, 波阻抗

Abstract: Seismic traces obtained from crosswell reflection imaging and well log data are used in the multi well log restriction random inverse acoustic impedance inversion. First the crosswell reflection imaged data was inverted to obtain an acoustic impedance profile. Then some acoustic impedance traces extracted from the inversion profile were used as virtual log and combined with well log data to implement the crosswell and surface seismic joint inversion. The modeling and filed data inversion results shown that crosswell and surface seismic joint inversion can provide more restriction in the surface seismic inversion and can improve accuracy of inversion.

Key words: crosswell seismic, constrained inversion, virtual log, acoustic impedance

中图分类号:

P631.4

杨勤勇，韩立国，曹辉，王德利，陈国金,许卓. 井间资料约束下地震波阻抗反演方法研究[J]. J4, 2006, 36(03): 468-473.

YANG Qin-yong, HAN Li-guo,CAO Hui,WANG De-li,CHEN Guo-jin,XU Zhuo. Crosswell Seismic Constrained Acoustic Impedance Inversion[J]. J4, 2006, 36(03): 468-473.

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