地震反演技术在储层建模中的作用

地震反演技术是储层建模的重要手段 .迭前反演主要指 AVO反演 ,它是地震剖面迭加以前利用反演振幅随炮检距变化的特征进行波阻抗反演 ;而迭后反演根据测井资料在其中所起作用大小分为 :道积分、递推反演、模型反演三种反演技术 .它们都是解决储层内的横向连续、物性变化特征的 ,但是每一种反演方法都有其局限性 ,并且解决储层地质特征的侧重点不一 .故在文中从各种反演方法原理入手 ,探讨每一种反演技术在不同级别储层模型中的作用 .这样才能在储层建模中针对不同开发阶段、不同精度的地质模型选用不同的反演法 ,使反演处理目的性更强、方法更有效

Effect of Seismic Inversion Technique in Reservoir Modeling

The requirement of the precision of reservoir model is different in different development phases. From the initial phase of development to tertiary oil recovery, the reservoir models are conceptive model, static model and forecast model in their proper order. Seismic inversion technique is an important means for reservoir modeling. It can be classified into prestack inversion and poststack inversion, and poststack inversion can further be classified into trace integration, recursion inversion and model inversion. But the particular emphases of the applications of the inversion methods are different. The authors discussed the effect of each inversion method in reservoir modeling in order that proper inversion method is selected according to the different stages of development and different requirements of the precision of reservoir models.