矿化度对有机铬/HPAM弱凝胶的成胶及流变性的影响  

Effects of Salinity on Gelation Behavior and Rheological Properties of Organic Chromium/HPAM Weak Gels

作　　者：赵晓非[1] 章磊[1] 杨明全[1] 刘立新[1] 佘庆龙 ZHA ZHANG Lei YANG Mingquan LIU Lixin SHE Qinglong(Provincial Key Laboratory of Oil and Gas Chemical Technology, School of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, Heilong]iang 163318, P R of China Well Testing and PeoCorating Services, Daqing Oilfield Company Ltd., PetroChina, Daqing, Heilongjiang 163412, P R of China)

机构地区：[1]东北石油大学化学化工学院石油与天然气化工省重点实验室,黑龙江大庆163318 [2]中国石油大庆油田有限责任公司试油试采分公司,黑龙江大庆163412

出　　处：《油田化学》2016年第3期431-436,共6页Oilfield Chemistry

基　　金：黑龙江省教育厅科学技术研究项目"工业污水乳化油水界面特性及反相破乳机理"(项目编号12531061)

摘　　要：为获得矿化度对有机铬/HPAM弱凝胶的成胶行为和流变性的影响规律,采用布氏黏度计和RS150流变仪分别研究了有机铬/HPAM弱凝胶成胶时间、凝胶强度、剪切性能和黏弹性随矿化度变化的规律。研究结果表明,相同成胶条件下,随矿化度增大,弱凝胶成胶时间加快、黏度增大,矿化度在2371.14数3084.60 mg/L范围能延缓成胶,达到3449.44 mg/L时成胶时间明显变短。剪切作用对稳定期的弱凝胶产生不可逆的破坏,低剪切速率下,矿化度高的弱凝胶表现较高的黏度;而在高剪切速率(≥21 s^(-1))下,不同矿化度下的弱凝胶的剪切黏度均相差不大。储能模量(G')和损耗模量(G'')均随矿化度增加而增大,矿化度高时弱凝胶以弹性占主导,矿化度低则以黏性为主。For organic chromium/HPAM weak gels, salinity（ 〈5000 mg/L ） of NaHCO3 type oilfield wastewater has a huge impact on its gelation time and strength. The effect of salinity on the performance of organic chromium/HPAM weak gels, such as gelation time, gel strength, shear properties and viscoelastic were investigated by brookfield viscometer and RSI50 rheology instrument. The experimental results showed that under the identical gelation condition, the gelation time shortened and the viscosity of weak gels raised as salinity increased. Salinity ranging from 2371.14 mg/L to 3084.60 mg/L had a significant delay effect on gelation, while the acceleration arose when salinity was beyond 3449.44 mg/L. Damage of shear on weak gel was not reversible. The weak gel with high salinity had higher viscosity at a low shear rate, while the viscosity with different salinity was similar at a high shear rate （ I〉 21 s-1）. Storage modulus G＇ and loss modulus G＂ of the weak gels increased with the increase of salinity. Elastic of weak gel were dominant at high salinity, while viscous became dominant at low salinity.

关 键 词：有机铬/HPAM弱凝胶 矿化度 成胶时间 剪切 弹性 黏性 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]