一种相对渗透率调节剂的静态吸附研究  

Study on Relative Permeability Modifier Static Adsorption

作　　者：齐自远[1] 王业飞[1] 刘承杰[2] 王涛[2] 于维钊[1] 王所良[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266555 [2]中国石化胜利油田分公司采油工艺研究院,山东东营257000

出　　处：《石油钻探技术》2011年第3期96-99,共4页Petroleum Drilling Techniques

基　　金：国家高技术研究发展计划("863"计划)项目"渤海油田聚合物驱提高采收率"(编号:2007AA090701);国家重大科技专项"海上稠油化学驱油技术"(编号:2008ZX05024-002);"泰山学者"建设工程资助项目(编号:ts20070704)资助

摘　　要：油田进入中高含水期后,为控制产水量,可以注入相对渗透率调节剂(RPM)。RPM可以大幅降低水相渗透率,而对油相渗透率影响很小甚至没有影响。RPM在地层岩石中的吸附性能是评价其性能的重要指标,为此笔者通过室内试验分析了阳离子聚合物型相对渗透率调节剂链节的荷电性、地层水矿化度、固体表面润湿性对RPM吸附过程的影响。结果表明,RPM在石英砂及油砂上的吸附量主要受静电引力及固体表面润湿性的影响,聚合物链节及岩石带电性的匹配对RPM的吸附具有重要影响;RPM的吸附量随着矿化度的增大而增大;RPM在石英砂和油砂上的吸附均符合单层吸附规律,且在油砂上的吸附量远小于在石英砂上的吸附量;RPM的吸附可使石英片表面润湿性由油湿向弱水湿方向转变。Relative permeability modifier （RPM） can be applied to control water production when reservoirs enter high water cut stage. RPM can reduce water relative permeability without affecting oil relative permeability. Adsorption of RPM on rock surface is an important indicator to evaluate its property. This paper studied the effects of polymer charge, formation water salinity and solid surface wettability on RPM adsorption. Experimental results indicate that the static adsorption of RPM on quartz sands and oil sands is affected by electrostatic interaction and solid surface wettability. The matching between polymer and rock surface charge has an important influence on adsorption. The adsorption increases with the increase of brine salinity. The adsorption of RPM on quartz sands and oil sands is Langmuir adsorption,and the adsorption on oil sands is far less than that on quartz sands. In addition, RPM adsorption could turn the oil-wet on quartz plate to weakly water-wet.

关 键 词：相对渗透率调节剂 静态吸附 吸附量 矿化度 润湿性 

分 类 号：TE357[石油与天然气工程—油气田开发工程]