摘要
季铵盐双子表面活性剂GQA-2的黏弹特性能使酸化时达到均匀布酸的目的。本文研究了变黏分流酸体系。通过室内实验考察了酸液变黏特性;GQA-2浓度、温度、剪切速率对酸液黏弹性的影响;反应时间、原油、地层水对降低残酸黏度的影响。通过双岩心流动实验考察了变黏分流酸的分流能力。实验结果表明该酸液体系适用于非均质碳酸盐岩、砂岩地层,或高含水油井的酸化施工。
The viscoelastic properties of Gemini quaternary ammonium salt surfactant GQA-2 can make the acid evenly distributed.This paper studies the system of variable viscosity diverting acid.Researched the viscoelastic properties of VVDA by laboratory experiments,the influence of GQA-2 concentration,temperature and shear rate on fresh acid viscoelastic,the effect of reaction time,crude oil and formation water on reducing waste acid viscosity.It researched the self-diverting properties of VVDA by dual core flow experiments.Through the laboratory experiments,we can conclude that the acid system is suitable for diversion acidization of high temperature heterogeneous carbonate and sandstone reservoir,or high water wells.
出处
《石油化工应用》
CAS
2013年第2期63-66,共4页
Petrochemical Industry Application
基金
国家火炬技术项目-特低渗透油田超低阻微乳胶束液增产技术及产品
项目编号:2012GH051835
关键词
季铵盐双子表面活性剂
变黏分流酸
流变性
岩心流动
Gemini quaternary ammonium salt suffactant
variable viscosity diverting acid
rhe- ological property
core flow
