靖边气田下古气藏相对富水区控制因素及气水分布模式研究

Research on dominant factors and gas-water distribution modes in relative water rich area in Low Palaeozoic of Jingbian gasfield

根据马五1地层相对富水区的平面分布特征,结合测井解释成果、区域构造演化及特征,对控制相对富水区的地质因素进行了分析。认为区域构造特征是控制相对富水区分布的基本条件,储层的非均质性决定其具体的分布形式。在此基础上,提出了4种气水分布模式。并指出由于岩性变化和储集条件变化形成的相对富水区是该区气水分布的主要类型。

According to the areal distribution characteristics of relative water rich area in MaV1 formation, logging interpretation results and regional structural evolution and characteristics, the geologic factors controlling relative water rich area are analyzed. It is believed that the regional structural characteristics are the basic factors controlling the distribution of relative water rich area, and the heterogeneity of reservoirs dominates the distribution modes. Based on the research, 4 gas-water distribution modes are put forward, and the relative water rich area formed due to lithology change and storage conditions change is the main type in this region.