阳离子对新疆油田二元驱油体系性能影响的研究  

Influence of cation on binary flooding system in Xinjiang oilfield

作　　者：侯军伟 廖先燕[2] 袁谅 努尔古丽 宋琪 郑晓宇 Hou Junwei;Liao Xianyan;Yuan Liang;Nuerguli;Song Qi;Zheng Xiaoyu(School of Art and Science,China University of Petroleum（Beijing）at Karamay,Karamay 834000,China;No.1 Oil Production Plant,PetroChina Xinjiang Oilfiled Company)

机构地区：[1]中国石油大学(北京)克拉玛依校区文理学院,新疆克拉玛依834000 [2]中国石油新疆油田公司采油一厂

出　　处：《无机盐工业》2018年第8期29-33,共5页Inorganic Chemicals Industry

基　　金：中国石油大学克拉玛依校区科研启动基金资助项目(RCYJ2017A-03-002)

摘　　要：新疆油田不同区块的油田污水无机盐成分相差很大,对二元复合驱的配方选择造成了较大影响。系统研究了油田污水中含量最高的Na+、Ca2+对新疆油田二元驱油体系性能影响。结果表明,对于阴离子表面活性剂KPS,界面张力随Na^+的增多呈现出先减小后增大的趋势,超低界面张力窗口很小;对于非离子与阴离子复配的表面活性剂KL(KPS+L5#),超低界面张力的窗口很大。同时随着阳离子浓度的增大,KL体系流变性降低,二元体系由剪切稀释转变为剪切增稠,逐渐由弹性流动为主转换成以黏性流动为主。There is a large difference in composition of inorganic salts in oilfield wastewater of different oilfields in Xinjiang oilfield,which has a great influence on the selection of binary compound flooding.The effects of sodium ions and calcium ions（the highest contents in the oilfield sewage） on the performance of binary flooding system in Xinjiang oilfield were studied systematically.The results showed that the interfacial tension decreased first and then increased with the increase of sodium ion,and the ultra-low interfacial tension window was very small for the anionic surfactant KPS.For the nonionic and anionic complex KL（KPS＋L5#）,ultra-low interface tension of the window was very large.At the same time,with the increase of sodium ions and calcium ions content,the rheological property of KL system decreased,and the binary system changed from shear dilution to shear thickening,and the viscous flow gradually shifted from elastic flow.

关 键 词：二元复合驱 钠离子 油田污水 钙离子 新疆油田 

分 类 号：TQ132.32[化学工程—无机化工]