摘要
根据永宁河川区长6储层物性分析,扫描电镜、铸体薄片、高压压汞等实验分析,明确长6储层主要为细粒长石砂岩,孔隙类型以溶蚀粒间孔、长石溶孔为主,研究区储层为中孔-特低渗型。并利用压汞曲线、岩石学特征、物性特征、孔喉特征对长6储层分类,总体划分为一类储层和二类储层。继而对储层进行敏感性评价,分析黏土矿物对敏感性的影响,总结影响储层敏感性因素,为该地区开发提供依据,提高石油开发产量。
According to the physical property analysis of Chang 6 reservoir of Yongning River,scanning electron microscope,casting sheet and high pressure mercury,it is clear that the Chang 6 reservoir is mainly fine feldspar sandstone,the pore type is mainly dissolved intergranular hole and feldspar dissolved hole,and the reservoir in the study area is medium-low permeability type.The mercury pressure curve,petrographic characteristics,physical characteristics and throat characteristics are used to classify the Chang 6 reservoir,which is generally divided into first class reservoir and second class reservoir.Then the sensitivity of the reservoir is evaluated,the influence of clay minerals on the sensitivity is analyzed,and the factors affecting the sensitivity of the reservoir are summarized,so as to provide a basis for the development of the area and increase the oil development output.
作者
李香雪
张惠
LI Xiangxue;ZHANG Hui(College of Earth Science and Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China;Shaanxi Key Lab of Petroleum AccumulationGeology,Xi'an Shiyou University,Xi'an Shaanxi 710065,China)
出处
《石油化工应用》
CAS
2023年第10期72-77,共6页
Petrochemical Industry Application
基金
国家青年科学基金项目(42102178)。
关键词
长6储层
储层特征
储层分类
敏感性
Chang 6 reservoir
reservoir characteristics
reservoir classification
sensitivity
