井间资料约束下地震波阻抗反演方法研究  

Cross-well Seismic Constrained Acoustic Impedance Inversion

作　　者：杨勤勇[1] 韩立国[1] 曹辉 王德利[1] 陈国金 许卓[1] 

机构地区：[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

出　　处：《吉林大学学报（地球科学版）》2006年第3期468-473,共6页Journal of Jilin University：Earth Science Edition

基　　金：中石化集团重点科技项目(P02046)

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。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.

关 键 词：井间地震 约束反演 虚拟井 波阻抗 

分 类 号：P631.4[天文地球—地质矿产勘探]