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  

Sensitivity of Tight Sandstone Reservoir in Ordos Basin and Its Controlling Factor:Taking the Chang 6 Reservoir of Yanchang Formation in Xin'anbian Area as Example

作　　者：邵东波 陈建文 

机构地区：[1]长庆油田分公司勘探部,陕西西安710018 [2]长庆油田分公司第十二采油厂,陕西西安710020

出　　处：《西安石油大学学报（自然科学版）》2017年第3期55-60,67,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

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)

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。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.

关 键 词：储层敏感性 控制因素 致密砂岩储层 长6储层 新安边地区 鄂尔多斯盆地 

分 类 号：TE122.23[石油与天然气工程—油气勘探]