By analyzing formation heterogeneity classification of oil region ,its factors and inner-bedded heterogeneity features based on logging data and confined coring test data ,it is believed that the reservoir stratum of Jianghan Oil-field belongs totally to one with macro pores and fine throat .It has the characteristics of medium porosity and low permeability with oil-bearing area 16 .48 Km2 ,average effective thickness 9 .2 m and oil-geology reserves 1 068 × 104 tons .The reservoir belongs to lithology and lithology -structure reservoir .Lithology ,physical property and low amplitude structure control the oil layers distribution .%通过对江汉油田油区储层非均质性的分类、成因及层内非均质性特征等的分析 ,结合测井数据、经密闭取芯化验等资料 ,认为江汉油田油区储层总体属于大孔隙细喉道储层;油藏储层属中孔低渗储层类型 ,储层物性较好,孔隙度中等,渗透率较低,属于较好的储层 ;含油面积16 .48 km2 ,平均有效厚度9 .2 m.石油地质储量1 068万吨,该储量为一级探明开发储量;油藏类型为岩性、岩性-构造油藏 ,油层分布受岩性、物性及低幅度构造控制.
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