江汉油田油区储层非均质性研究

A Study of Reservoir Heterogeneity in Jianghan Oilfield

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16.48km2,平均有效厚度9.2m。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。

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 Oilfield belongs totally to one with macro pores and fine throat.It has the characteristics of medium porosity and low permeability with oil-bearing area 16.48Km2,average effective thickness 9.2mand oil-geology reserves 1 068×104tons.The reservoir belongs to lithology and lithology-structure reservoir.Lithology,physical property and low amplitude structure control the oil layers distribution.