聚合物驱深度调剖技术研究  

Research of depth profile control technology in polymer flooding.

作　　者：雷光伦[1] 陈月明[1] 李爱芬[1] 阚春玲[2] 

机构地区：[1]石油大学 [2]大庆油田有限责任公司采油一厂

出　　处：《油气地质与采收率》2001年第3期54-57,共4页Petroleum Geology and Recovery Efficiency

基　　金：中国石油天然气集团公司 2 0 0 0年"示范工程"项目

摘　　要：聚合物驱深度调剖是一项提高聚合物驱油效果的新技术。复合离子聚合物是由阴、阳、非三种单体共聚生成的一种新型聚合物 ,在油层中有很高的吸附性和流动性 ,适当交联后 ,可形成高强度的空间网状结构胶体。实验研究表明 ,复合离子聚合物调剖剂的成胶时间大于 4d ,成胶粘度大于 10Pa·s,突破压力梯度大于 14MPa/m ,堵水率大于 96 % ,适用于聚合物驱的深度调剖。现场试验表明 ,用复合离子聚合物调剖后 ,聚合物产出时间延长 ,产油量增加 ,含水率大幅下降 ,产出聚合物浓度减少 ,聚合物利用率高 。Depth profile control is a new technology for improving the oil displacement efficiency in polymer flooding. Compound ion polymer is a new type one that is polymerized by anion, cation and nonion three monomers, and of good adsorptivity and flowability in oil?bearing formations. Space reticulate?structure colloid of high intensity may come into being after proper crosslinking. Experiment study shows that gel time is longer than 4 days, gel viscosity, breakthrough pressure gradient and water plugging rate are more than 1×10 4mPa·s, 14MPa/m and 96% respectively for profile control agent of the compound ion polymer. So the polymer is suitable to the depth profile control of polymer flooding. The field experiment presents that output time is prolonged, oil production increased, water cut decreased by a wide margin, concentration of the produced polymer decreased, utilization ratio of the polymer is high and the effect on improving oil recovery is remarkable after profile control by using the compound ion polymer.

关 键 词：复合离子聚合物 交联 深度调剖 聚合物驱 提高采收率 采油 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]