摘要
为了进一步提高稠油油藏的开发效率,以丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸AMPS和可聚合表面活性单体(A-2)为原料,制备出了一种新型两亲性聚合物乳化降黏驱油剂AP-2。优化了AP-2的制备条件,并对其乳化降黏性能以及驱油性能进行了评价。结果表明:当单体总质量分数为25%、单体A-2的质量分数为4%、引发剂AIBA的质量分数为0.05%、乳化剂SDS的质量分数为3.5%、反应温度为12℃、反应时间为6 h时,AP-2的黏均相对分子质量最大。AP-2的质量分数越大,其对稠油样品的降黏率相对越大,填砂管的采收率提高幅度相对越大;当AP-2的质量分数为0.8%时,降黏率为99.26%,填砂管的采收率提高幅度可以达到43.8%;老化温度越高,降黏率相对越小,当老化温度为120℃时,乳化降黏率仍能达到96.84%。
In order to further improve the development efficiency of heavy oil reservoirs,a novel amphiphilic polymer emulsion viscosity reducing oil displacement agent AP-2 was prepared using acrylamide(AM),2-acrylamido-2-methylpropanesulfonic acid(AMPS),and polymerizable surface-active monomer(A-2)as raw materials.The preparation conditions of AP-2 were optimized,and its emulsifying and viscosity reducing properties as well as oil displacement performance were evaluated.The results showed that when the total mass fraction of monomers was 25%,the mass fraction of monomer A-2 was 4%,the mass fraction of initiator AIBA was 0.05%,the mass fraction of emulsifier SDS was 3.5%,the reaction temperature was 12℃,and the reaction time was 6 h,the viscosity average relative molecular weight of AP-2 was the highest.The higher the mass fraction of AP-2,the greater its viscosity reduction rate on heavy oil samples,and the greater the improvement in recovery rate of sand filled pipes;when the mass fraction of AP-2 was 0.8%,the viscosity reduction rate was 99.26%,and the recovery rate of sand filled pipes was increased by 43.8%;the higher the aging temperature,the smaller the viscosity reduction rate.When the aging temperature was 120℃,the emulsification viscosity reduction rate still reached 96.84%.
作者
白小娟
BAI Xiaojuan(PetroChina Yumen Oilfield Branch Supervision Center,Jiuquan Gansu 735019,China)
出处
《当代化工》
2025年第9期2074-2079,共6页
Contemporary Chemical Industry
基金
国家重点研发计划项目(项目编号:2022YFC4005616)。
关键词
稠油油藏
两亲性聚合物
乳化降黏
制备条件
性能评价
黏度
表面活性剂
石油
Heavy oil reservoir
Amphiphilic polymer
Emulsification and viscosity reduction
Preparation conditions
Performance evaluation
Viscosity
Surfactants
Petroleum
