缝洞储层的地震检测和预测

Detection and prediction of fracture-cavecontained reservoir from seismic data

探讨了与缝洞储层检测和预测有关的若干问题。只要储层中的缝洞系统有足够大的密度 ,则缝洞储层的地震检测和预测是有可能成功的。通过缝洞储层的物理模型实验和数值模拟分析可以看出 ,地震波动力学参数(振幅、相位 ,衰减等 )对缝洞系统的响应较运动学参数 (速度 ,走时等 )更敏感 ,因此利用动力学参数进行缝洞检测更有效。要得到缝洞储层的可靠预测 ,使用地质、地震、测井。

In this paper we mainly discuss three problems related to detection and prediction of fracture karst cave contained reservoir from seismic P wave data. First,we showed that it is possible to detect and predict the fracture cave system when their density is large enough. Second, we demonstrated that seismic dynamic responses (amplitude, phase, attenuation etc.) to fracture cave sets are more sensitive than kinematic ones (velocity, traveltime etc.) based on the results from physical modelling and numerical simulation of fractured reservoir models.Therefore it is more effective to detect the fractured reservoir by using seismic dynamic attributs.Finally,we noted that it is important to utilise integrative data which include geological,seismic, well logging, drilling and developing informations for making a reliable estimation.