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榆林气田山西组碎屑岩储层岩性低孔隙度低渗透率、孔隙结构复杂,石英砂岩储层和岩屑砂岩储层具有不同的特点,是控制孔隙类型、孔隙结构、物性和含气性的主导因素,并使得各类储层在测井响应方面有着显著的差异,储层物性与电性之间不具有简单的相关关系。以岩心实验分析和测试结果为研究基础,通过深入分析典型储层岩性、物性及含油气性在电性上的响应特征,在研究区首次采用最优化测井解释方法,在准确识别石英砂岩和岩屑砂岩岩性的基础上完成较高精度的测井资料数字处理,取得了比较满意的效果。最优化测井解释方法不仅能在碳酸盐岩储层中应用,在复杂碎屑岩储层的测井解释中也能取得良好的效果。
The low permeability and low porosity of lithic reservoirs in Shanxi Formation of Yulin gas field have complex pore structure. The quartz sandstone reservoir and the lithic sandstone reservoir have different characteristics, which are controlled by pore type, pore structure, physical properties and gas-bearing And make all kinds of reservoirs have significant differences in well logging response. There is no simple correlation between reservoir physical properties and electrical properties. Based on the core experimental analysis and test results, through the analysis of the lithology, physical properties and hydrocarbon-bearing characteristics of typical reservoirs, the optimal logging interpretation method is used for the first time in the study area to accurately identify quartz sandstone And lithic sandstone lithology based on the completion of high-precision digital logging data processing, and achieved satisfactory results. The optimized logging interpretation method can not only be applied in carbonate reservoirs, but also can achieve good results in logging interpretation of complex clastic reservoir.