鄂尔多斯盆地致密砂岩储层敏感性特征及其控制因素——以新安边地区延长组长6储层为例

发布时间：2018-11-10 15:17

【摘要】：应用室内水驱实验,对鄂尔多斯盆地新安边地区延长组长6致密砂岩油藏储层开展敏感性评价。结果表明,储层具有弱—中等偏弱速敏、弱—中等偏弱水敏、弱—中等偏弱酸敏、弱—中等偏弱盐敏、水敏性波动范围大的特点。储层敏感性特征的主要控制因素为黏土矿物,影响储层速敏性的黏土矿物为高岭石,影响储层水敏性和盐敏性的黏土矿物为伊蒙混层和伊利石,影响储层酸敏性的黏土矿物为绿泥石。储层黏土矿物分析结果与储层敏感性评价结果相吻合。
[Abstract]:The sensitivity evaluation of Yanchang 6 tight sandstone reservoir in Xinanbian area of Ordos Basin was carried out by using indoor water drive experiment. The results show that the reservoir has the characteristics of weak-medium weak velocity sensitivity, weak-medium weak water sensitivity, weak-medium partial weak acid sensitivity, weak-medium weak salt sensitivity and wide fluctuation range of water sensitivity. The main controlling factors of reservoir sensitivity are clay minerals, kaolinite, and immonitic and Illite, which affect water sensitivity and salt sensitivity of reservoir. The clay that affects the acid sensitivity of reservoir is chlorite. The results of reservoir clay mineral analysis are in agreement with the results of reservoir sensitivity evaluation.
【作者单位】：长庆油田分公司勘探部;长庆油田分公司第十二采油厂;
【基金】：国家自然科学基金“变形介质复杂储层应力敏感性的岩石流变学机理及动态模型”(编号:51104119) 中国石油科技创新基金项目“超深储层孔隙演化,有利储层评价预测新方法”(编号:2015D-5006-0106)
【分类号】：TE311

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