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从四维地震数据中获取储层饱和度和压力变化的定量信息对油气田管理和提高油气采收率非常重要。但在空间上动态变化小于地震分辨率的非均质储层中,常规四维解释方法不能记录到个别岩性体的定量变化。缺少与某一种已有的四维效果相关联的特殊岩性的信息,不利于对油藏的了解与预测。本文提出了一种使用静态和动态岩石物理模型(岩石物理模板)、实时可视化进行四维叠前反演数据交互解释的方法。该方法的显著特点是将四维效果和特定岩性体联系在一起。
Quantitative information obtained from 4-D seismic data on reservoir saturation and pressure changes is very important for oil and gas field management and for enhanced oil and gas recovery. However, in the heterogeneous reservoirs whose spatial variation is less than the seismic resolution, the conventional four-dimensional interpretation method can not record the quantitative change of individual lithologic bodies. The lack of specific lithology information associated with an existing four-dimensional effect is detrimental to reservoir understanding and prediction. This paper presents a method for interactive interpretation of four-dimensional pre-stack inversion data using both static and dynamic petrophysical models (petrophysical templates) and real-time visualization. The salient feature of this method is the association of four-dimensional effects with a particular lithology.