融合地震和测井信息的三角洲沉积微相随机建模研究--以扶余油田二夹五区块为例  

Stochastic modeling study of deltaic sedimentary microfacies by integrating seismic information with logging information——taking Erjiawu block in Fuyu oilfield as an example

作　　者：李晓锋[1] 彭仕宓[1] 王海江 李佳利[3] 

机构地区：[1]中国石油大学(北京)资源与信息学院,北京102249 [2]中海油研究中心,北京100027 [3]大庆油田采油六厂,黑龙江大庆163114

出　　处：《西安石油大学学报（自然科学版）》2008年第5期37-39,42,共4页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：重大基础研究前期研究专项(编号:2002CCA00700)资助

摘　　要：小型三角洲沉积储层厚度薄,砂体的规模小,侧向变化快,主要以砂泥岩间互的形式出现.利用三维地震资料具有覆盖面广和采集密度大的优点,以沃尔索相律和沉积微相与地震波阻抗之间的概率关系作为约束,应用序贯指示模拟结合同位协同克里金的方法融合地震和测井信息,建立了三角洲沉积微相的地质模型.实践结果证实,该方法能够对相变较快的三角洲沉积井间沉积微相的不确定性进行表征,提高了模型预测的可靠性.Small-scale delta sediment has some characters as follows:its reservoir is thin,its sand-body scale is small,its lateral facies variation is quick,and it is mainly composed of laterally intervallic sand-rock layers and mud-rock layers.The stochastic geologic model of deltaic sedimentary microfacies is established,in which seismic information is integrated with logging information by combining sequential indicating simulation method with collocated co-Kriging method and the probability relationship between Walther phase rule and sedimentary microfacies and seismic impedance is as constraint.The modeling method utilizes the advantages of the broad coverage and high acquisition density of 3D seismic data.The practice proves that the modeling can well characterize the uncertainty of the interwell delta microfacies of the delta sediments of the quick lateral facies variation,which enhances the reliability of model forecast.

关 键 词：三角洲沉积微相 地质模型 随机建模 同位协同克里金 波阻抗 扶余油田 

分 类 号：TE121.31[石油与天然气工程—油气勘探] TE122.23