抗高温高盐油藏聚合物微球室内研究  

Study of High Temperature and High Salt Resistant Polymer Microspheres in Oil Reservoirs

作　　者：王春艳[1] 张蔚红[2] 潘杰[3] 张亚芹 李涛 WANG Chun-yan;ZHANG Wei-hong;PAN Jie;ZHANG Ya-qin;LI Tao(Yanchang Oilfield Co.,Ltd.,Yan'an Shaanxi 716000,China;Shaanxi Energy Vocational and Technical College,Xianyang Shaanxi 712000,China;Northwest University,Xi'an Shaanxi 710069,China;Xi'an Alberta Resources&Environment Analysis and Testing Technology Co.,Ltd.,Xi'an Shaanxi 710000,China)

机构地区：[1]延长油田股份有限公司,陕西延安716000 [2]陕西能源职业技术学院,陕西咸阳712000 [3]西北大学,陕西西安710069 [4]西安阿伯塔资环分析测试技术有限公司,陕西西安710000

出　　处：《当代化工》2023年第6期1307-1310,共4页Contemporary Chemical Industry

基　　金：国家科技重大专项课题,低渗-致密油藏高效提高采收率新技术(项目编号:2020ZX05009-004)。

摘　　要：目前使用的聚合物微球存在抗温抗盐缓膨性能不佳、堵塞能力较差等不足。以丙烯酰胺(AM)作为主要单体,并选择2-丙烯酰胺-2-甲基丙磺酸(AMPS)和丙烯酸(AA)作为辅助单体合成出抗高温高盐的低弹性聚合物微球。红外光谱表征结果表明,产物为AM-AMPS-AA聚合产物;扫描电镜照片表明,微球干粉为球形微小颗粒,平均粒径1~3μm;激光粒度仪分析结果表明,微球在水中的中值粒径为9.124μm;热失重实验结果表明,微球干粉在392℃时损失50%的质量;岩心驱替实验结果表明,微球能够进入液测渗透率在81.52~375.58 mD之间的岩心,可在这些岩心中完成运移,并保持较高的封堵效率,最高封堵效率可达84.27%。The currently used polymer microspheres have deficiencies,such as poor resistance to temperature and salt retardation and poor plugging ability.In this paper,acrylamide(AM) was used as the main monomer,and 2-acrylamide-2-methylpropanesulfonic acid(AMPS) and acrylic acid(AA) were selected as auxiliary monomers to synthesize low elasticity polymer microspheres with high temperature and high salt resistance.The infrared spectral characterization results showed that the products were AM-AMPS-AA polymerization products;The scanning electron microscope photographs showed that the dry microspheres were spherical tiny particles with an average particle size of 1~3 μm;The laser particle size analysis results showed that the median particle size of microspheres in water was 9.124 μm;The thermal weight loss experiments showed that the dry microspheres lost 50% of their mass at 392 ℃;The core flooding experiments showed that the microspheres could enter the cores with liquid measured permeability of 81.52~375.58 mD,and could complete the transport in these cores and maintained a high blocking efficiency,with the highest blocking efficiency of 84.27%.

关 键 词：乳液聚合法 聚合物微球 抗高温 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]