叠前AVA反演预测储层流体的方法与应用

Method and Application of Prestack AVA Inversion to Predict Reservoir Fluid

AVO能够用来作为储层流体预测的工具,已经有很多文献论述了它的优越性。叠前AVA弹性多参数反演用来预测流体的研究才处于起步阶段,但是已经表现出很强的生命力。在研究前人文献的同时,从叠前AVA反演出发,将其用于胜利油田某一区块的实例计算,在得到了不同参数的反演剖面的基础上,进行了AVO的属性分析,提取了6个AVO的属性体,从各个不同的方面去预测储层流体的性质。从与井相对应的效果来分析,识别储层的符合率较高,说明了地震反演与AVO属性体结合起来,是一种较为有效的岩性与流体的预测方法。

AVO could be used for predicting reservoir fluid, there were many literatures discussed its superiority.The prestack AVA elasticity multiparameter inversion was used to predict reservoir fluid, but it already showed strong vitality.Based on predecessors' literatures, starting from prestack AVA inversion, it was used for a case calculation in a block of Shengli Oilfield.On the basis of different parametric inversion profiles, AVO attribute was analyzed.Six AVO attribute monocrystals were extracted to predict the properties of reservoir fluid from different aspects.From the analyses of the effects corresponding to wells, reservoirs can be identified more effectively.It shows that the integration seismic inversion and AVO attribute monocrystal used as virtual method of lithology and fluid prediction.