阳离子双子表面活性剂的合成及其在水锁损害中的应用  

Synthesis of cationic gemini surfactant and its application in water blocking

作　　者：刘燕[1] 郭亮[2] 毕凯[2] 任伟[2] 刘利[1] 李荫刚[1] 韩力挥[1] 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100 [2]长庆油田第一采油厂,陕西延安716000

出　　处：《精细与专用化学品》2011年第8期8-10,共3页Fine and Specialty Chemicals

摘　　要：针对低渗透油藏在开发过程中储层极易受到水锁损害的特点,对低渗透砂岩岩心进行了水锁损害研究。在分析了产生油井水锁损害机理的基础上,合成了一种含氟链阳离子双子表面活性剂GFS以减弱水锁损害。室内试验表明:该表面活性剂的表面张力<20×10^(-3)N·m^(-3);与多元醇溶液复配后,水锁损害的渗透率恢复率高达86%以上,具有明显的降低水锁损害的作用,对改善低渗透油藏的开发具有重要意义。The water blocking damage in low permeability sandstone core was studied for the characteristics that low permeability reservoirs are vulnerable to damage by water blocking in the development process.On the basis of the damage mechanism of water blocking in oil well,a kind of fluorinated chain cationic gemini surfactant was synthesized to reduce the damage of water blocking.Laboratory test showed that the surface tension of surfactant20×10^（-3） N·m^（-1）,its recovery rate of damaging rate of water blocking was up to 86%when mixed with the polyol solution,there was a distinct role to reduce water blocking damage.It is important to improve the development of low permeability reservoirs.

关 键 词：阳离子双子表面活性剂 合成 水锁 表面张力 

分 类 号：TQ423[化学工程]