地震多属性在浊积扇河道砂体识别中的应用  

Application of seismic multi-attributes in the identification of the channel sand in turbidite body

作　　者：刘伟[1] 贺振华[1] 陈学华[1] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059

出　　处：《西安石油大学学报（自然科学版）》2011年第5期6-10,16,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金项目(编号:41004054)

摘　　要：浊积体中河道砂体单层厚度薄,横向变化快,受断层构造影响大,利用常规瞬时振幅沿层切片方法很难识别河道砂体展布,而用地层切片构建等时地层格架,利用谱分解技术将相干属性与地层切片结合起来,运用测井相、沉积相资料可对浊积扇的河道砂体进行综合预测.将此方法运用到渤海工区中取得了较好的实际效果,查明了河道砂体的展布规律,为后期的布井钻探提供了依据.The channel sandbodies in turbidite body are characterized by little single-layer thickness,quick horizontal variation and the great influence of fault structure.Therefore it is difficult to identify the distribution of the channel sandbodies by conventional instantaneous amplitude attributes in stratum slicing.But if coherence attributes are combined with stratum slicing attributes by constructing isochronous stratigraphic framework and spectrum decomposition technology,the distribution of sandbodies in turbidite body can be predicted based on logging data and sedimentary facies data.This prediction method was applied to Bohai area and the distribution of sandbodies in the area was obtained,which provides basis for the arrangement of wells in later exploration.

关 键 词：地震多属性 河道检测 浊积体 相干属性 谱分解 地层切片 

分 类 号：P631.4[天文地球—地质矿产勘探]