泊松阻尼因子在平湖地区储层流体检测中的应用——一种定量地震解释的新方法

Application of Poisson Dampening Factor for Inspection of Reservoir Fluid in Pinghu Area——A New Method for Quantitative Seismic Interpretation

详细介绍了泊松阻尼因子(PDF)的概念,分析了泊松阻尼因子的若干特性,并经实际应用表明泊松阻尼因子对储层流体性质相当敏感,与含水饱和度关系密切,非常适合用于检测储层流体性质和预测含气饱和度。由于泊松阻尼因子仅与纵波阻抗和横波阻抗有关,没有显式的密度项,因此,不需要高角度的叠前道集资料,在一般地震资料品质条件下就可以获得比较稳定的叠前反演结果。在平湖地区的实际应用表明该技术应用效果好,是一种定量地震解释的新手段。

This article elaborates the definition of Poisson Dampening Factor （PDF） in detail and analyzes some characteristics of PDF. Actual application indicated that PDF is very sensitive to the property of reservoir fluid, closely related to water saturation and suitable to be used to detect the property of reservoir fluid and predict water saturation. PDF correlates only to P-Impedance and S-Impedance without explicit density item so that it doesn＇t need high angle prestack gather data. Therefore, we can get the relatively stable prestack inversion results under the conditions of common seismic data quality. Actual application in Pinghu area indicated that this technology is a new method for quantitative seismic interpretation with desirable results achieved.