中文摘要：

利用X-衍射、扫描电镜、敏感性流动实验等技术方法研究了东濮凹陷文东油田沙三中深层高压低渗透油藏储层敏感性,主要分析了敏感性类型、敏感性伤害程度及储层敏感性的影响因素。研究结果表明,储层具有弱速敏、中等偏强水敏、弱酸敏、弱-无盐敏特征。在油藏储层常规流动敏感性实验的基础上,提出了体积流量敏感性,研究区储层体积敏感为中等偏弱。影响储层敏感性最直接的因素是储层物性、储层孔隙结构及黏土矿物等。注水开发中后期,地层压力下降明显,储层物性变差,储层敏感程度增强,注水效果差。

英文摘要：

With the technology of X-ray diffraction,SEM（scanning electron microscope） and flowrate test,the reservoir sensitivity in the middle-deep section of high pressure and low-permeability sandstone reservoir of Wendong Oilfield in Dongpu Depression were analyzed.The analysis included the sensitivity type,damage degree to the rock sensitivity and the influence factors of the reservoir sensitivity.The sensitivity test showed that this reservoir was characterized by weak speed sensitivity,middle to strong water sensitivity,weak acid sensitivity and weak-non salt sensitivity.Based on the regular reservoir flowrate test,the volume sensitivity was put forward,and the result of volume sensitivity test in the study area is middle to weak.The most direct influence factors of the reservoir sensitivity are reservoir properties,the pore structure and clay minerals.During medium-late stage of the waterflooding development,the strata pressure decreases significantly,the reservoir physical property becomes weaker,the sensitivity of rock damage degree increases,and the flood effectiveness is poor.