榆林气田山2段低渗砂岩储层测井综合评价

榆林气田山2段储层属于典型的低孔、低渗、致密砂岩储层,孔隙类型以粒间孔、晶间孔为主,有少量杂基溶孔。岩性是影响储层孔隙类型、孔隙结构、储层物性和含气性的主要因素。同一岩性储层的孔渗关系、孔隙类型和结构、储产能力、电性响应特征趋于一致；随着岩性的变化，“四性”之间的对应关系也发生变化。在精细研究储层“四性”关系和准确识别岩性的基础上，对于不同的岩性建立了不同的参数解释模型，最终实现了对储层的综合评价。指出了井间储层的有利区块,为下一步滚动勘探开发提供了依据。

COMPREHENSIVE EVALUATION OF WELL LOGGING OF LIGHT SANDSTONE GAS RESERVOIR AT SHAN MEMBER 2, YULIN GAS FIELD

The reservoir at Shan member 2, Yulin gas field is typically low porosity, low permeability and tight sandstone reservoir, the types of pore spaces are dominated by intergrain pores and intercrystal pores, with a few dissolved matrix pores. Lithology is the key factor impacting pore types, pore structure, physical properties of the reservoir and gascontaining property. The relationship between porosity and permeability, the types and structure of pore spaces, reserving and productive capacity and response character of electrical property in the reservoir with same lithologic property tend to coincidence. As the change of lithologic property, the corresponding relationship among the “four characters”mentioned above changes too. On the basis of fine study of the four characters and accurate identification of lithologic property, different parameter interpretation models are set up for different lithologic properties, the comprehensive evaluation of the reservoir is finally realized. The favorable reservoir areas between wells are pointed out, which provides reference for the next ongoing exploration and exploitation.