中文摘要：

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。

英文摘要：

The sensitivity of Chang 6tight sandstone reservoir of Yanchang Formation in Xin＇anbian area of Ordros Basin was evaluated through laboratory water flooding experiment. It is shown that, the reservoir has weak-medium velocity sensitivity, water sensitivity, acid sensitivity and salt sensitivity, and the variation range of water sensitivity is large. The main control factor of the reservoir sensitivity characteristics is clay mineral, kaolinite controls the velocity sensitivity, ilite-smectite mixed layer and illite influence water sensitivity and salt sensitivity, and chlorite influences acid sensitivity. The analysis result of reservoir clay minerals is consistent with the analysis result of reservoir sensitivity.