元坝气藏须二段物性特征研究  

Physical Properties Researchof Gas Reservoir Xu-2 Formation in Yuanba Area

作　　者：王喻[1] 谢润成[1] 周文 王浩[1] 张冲[1] 

机构地区：[1]成都理工大学能源学院,成都610059 [2]油气藏地质及开发工程国家重点实验室,成都610059

出　　处：《四川理工学院学报（自然科学版）》2013年第4期55-60,共6页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

摘　　要：元坝须二气藏是元坝气藏重要研究层段之一,属于致密裂缝型砂岩气藏。通过对岩心、铸体薄片及扫描电镜的观察,结合样品测试分析资料结果,对元坝须二段物性特征进行研究。研究表明,须二段储层岩石主要以中粒岩屑砂岩为主,孔隙类型主要为微孔隙,裂缝对渗流及孔隙相关性有较大影响,石英、长石、胶结物与方解石是影响物性的主要因素。其中,孔渗相对高值区集中的须二下亚段,是接下来的勘探开发的重点区域。Xu-2 Formation is an important gas productive reservoir in Yuanba area, it belongs to fractured tight gas res- ervoir. In combination with analysis results of test data, the reservoir physical properties is studieol through the observation of core, casting thin sections and SEM. The results show that the reservoir mainly consists of medium-grained lithic sandstone, and the pore types is primarily micropore. The fracture plays an important role in seepage and porosity-permeability correlativity. Quartz, feldspar, cement and calcite are the main factors that affect physical properties. The lower part of Xu-2 formation with high-value areas of porosity and permeability will be the preferred region for exploration in the future.

关 键 词：元坝 致密气藏 须二段 物性特征 

分 类 号：P618.130.21[天文地球—矿床学]