川东南嘉陵江组储层地质特征及储层预测研究

针对川东南地区嘉陵江组储层横向变化大、非均质性强、勘探难度较大的特点，以嘉陵江组一段为例，在地层对比、储层微观孔隙结构、储层物性特征研究的基础上，开展波阻抗反演工作，并结合储层的地质特征和地球物理响应特〖JP〗征确定波阻抗反演结果解释方案，进行储层解释，预测有利储层的平面展布特征。依据储层地质特征研究成果，优选相关地震属性，采用多元回归的方法建立地震属性与储层孔隙度的关系，预测储层孔隙度平面展布。最后综合地质、储层预测、孔隙度预测的结果提出有利勘探目标区。结果表明，该套方法比较适合对研究区的地质解释，效果良好。

The Geologic Characteristics and Reservoir Prediction of Jialingjiang Formation in the Southeast Area of Sichuan

Aiming at the properties of large transversal change,strong heterogeneity and highly difficult exploration reservoirs of Jialingjiang formation in Southeast area of Sichuan,taking T₁j₁ for example,based on stratigraphic correlation,pore micro-geometry and physical properties,acoustic impedance inversion is carried on and its interpretation scheme combining reservoir geologic with geophysics response characteristics is determined,distribution of favorable reservoir is predicted.According to the reservoir geologic characteristics and optimized seismic attribute,step wise regression is used to establish the relationship between seismic attribute and reservoir porosity to predict distribution of reservoir porosity.Finally,the favorable exploration area is pointed out by the results of reservoir geologic inversion and porosity prediction.The method combining geology and geophysics gives the more reasonable geologic interpretation for reservoir prediction and porosity inversion,effective result is obtained.