Abstract：Many sets of red clastic rock formations are developed in Ek3 to Es4s in the southern part of Dongying Depression. They are inter-beds of sandstone and mudstone interspersed with multi-period basalt. Low seismic data resolution and small velocity difference between the deeply buried inter-beds make reservoir prediction very difficult. Based on the rock physics analysis, we obtain the reflection characteristics by well logging and seismic calibration, and choose sensitive seismic attributes by the forward modeling. As the result, a series of seismic reservoir prediction approaches are formed for red layer with different facies in different plays. Based on our research, using multi-attributes can identify reservoirs from the surrounding rocks in the basin. On slope denuded belts, the sandstone velocity is obviously higher than the mudstone velocity, and the instantaneous amplitude reflects the distribution pattern of sandstone. On step-fault belts and sags, the prestack attribute such as the velocity ratio between P-wave to S-wave reflects sandstone features, and the sandstone distribution is predicted with prestack AVO attributes and other information.
潘兴祥. 东营凹陷南坡西段“红层”储层地震描述方法[J]. 石油地球物理勘探, 2013, 48(增刊1): 82-88.
Pan Xingxiang. Red layer reservoir characterization in the Dongying Depression. OGP, 2013, 48(增刊1): 82-88.
