【摘要】 对于储层非均质性非常严重的河流相储层来说,如何更好的利用三维地震资料一直是一个难点,本文探讨了一种综合地震、测井、地质资料的方法,并以大港油田某区块为例建立了基于地质统计和地震反演的定量储层地质模型.首先通过对测井约束地震反演得到的波阻抗数据体分析,提取三维空间变异函数,利用具外部漂移的泛克里金模拟方法建立出砂体的分布模型;然后以此砂体模型为相控制条件,建立储层物性参数模型.经过验证表明,本方法可以避免常规建模方法中存在的物性分布与岩相分布不匹配的现象,从而获得与地质认识一致的结论.更多还原

【Abstract】 In highly heterogeneous fluvial reservoir modeling,how to integrate 3D seismic data is a key problem.Based mainly on geostatistics and seismic inversion,a new method of integrating seismic,logging and geological data was discussed in the paper.Taking the Dagang oil field for example,the quantitative reservoir geological model was established.Through analyzing acoustic impedance volume obtained from logging constrained seismic inversion,the 3D variogram was obtained,and the distribution model of sand body was established using Universal Kringing simulation method with external drift.Taking this sand body model as facies-controlling conditions,a reservoir property model was proposed.Results indicate that this method can effectively avoid mismatches between reservoir property distribution and lithofacies distribution,which is commonly caused in conventional reservoir modeling methods,and can get reasonable conclusion in consistent with geological knowledge.更多还原