叠前有色反演技术在地震岩性学研究中的应用  

Application of prestack colored inversion technology in seismic lithology

作　　者：刘力辉[1] 陈珊[2] 倪长宽[3] 

机构地区：[1]北京诺克斯达石油科技有限公司,北京100192 [2]中国地质大学(北京),北京100083 [3]中国石油天然气股份有限公司勘探开发研究院西北分院,甘肃兰州730020

出　　处：《石油物探》2013年第2期171-176,112-113,共6页Geophysical Prospecting For Petroleum

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目(2012B-3709)资助

摘　　要：地震岩性学是将地震数据通过特殊处理转化为具有明确岩性意义的岩性体,为地震地貌表征服务。该地震岩性体需要满足3个方面的要求:①数据体的幅值与岩性相关;②数据体的横向振幅相对保持;③数据体的值最好为相对值。叠前射线弹性阻抗有色反演技术,既使反演体数值与井资料靠近,又保持了反演振幅的横向相对关系,可以作为实现地震岩性体的一个关键技术。该技术在冀中坳陷饶阳凹陷蠡县斜坡实际应用中取得了很好的效果,预测结果符合研究区的地质背景和沉积规律,为地震地貌刻画提供了有利工具。Seismic lithology and seismic geomorphology are subdisciplines of seismic sedimentology.Seismic geomorphology focuses on plane sedimentary imaging by stratal slice.Seismic lithology serves seismic geomorphology by interpreting the seismic data into a lithologic data with a clear sense of lithology cube.The seismic lithologic cube should satisfy three demands.Firstly,the amplitude of the data volume is related to lithology.Secondly,the horizontal amplitude preserved relatively.Thirdly,the value of data should be relative.The result of Ray-path elastic impedance colored inversion can be regarded as an attribute volume with lithology cube meaning for its value is close to well and horizontal amplitude is preserved relatively.This technology obtained good result in practical application of seismic lithology research at Lixian slope of Raoyang Sag in Jizhong Depression.

关 键 词：地震沉积学 地震岩性学 地震地貌学 有色反演 射线弹性阻抗 

分 类 号：P631.4[天文地球—地质矿产勘探]