光引发纳米级聚丙烯酰胺堵水剂的制备及性能  

Preparation and properties of photoinitiated nano-polyacrylamide water shutoff agent

作　　者：李文才 董文魁[2] 王俊有 宣雅妮 赵世成[1] LI Wen-cai;DONG Wen-kui;WANG Jun-you;XUAN Ya-ni;ZHAO Shi-cheng(Shanghai Key Laboratory of Multiphase Materials Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;The Second Oil Production Plant,Changqing Oilfield Company,Qingyang 745000,China)

机构地区：[1]华东理工大学上海市多相结构材料化学工程重点实验室,上海200237 [2]长庆油田公司第二采油厂,甘肃庆阳745000

出　　处：《应用化工》2022年第7期1859-1863,1868,共6页Applied Chemical Industry

基　　金：国家自然科学基金(21878089)。

摘　　要：使用一种自由基型光引发剂苯基-2,4,6-三甲基苯甲酰亚膦酸锂(LAP),在常温下引发由丙烯酰胺(AM)和2-丙烯酰胺-2-甲基丙磺酸(AMPS)为单体的反相微乳液聚合,制得纳米级聚丙烯酰胺微球,微球具有良好的球状形貌和比较均匀的粒径分布,平均尺寸为50.2 nm。在70 000 mg/L的矿化度下,6 d的溶胀倍率为3.2倍,在60℃下,6 d的溶胀倍率为3.4倍,有着良好的耐温耐盐性能。在填砂管调驱实验中封堵率最高可达97.2%,表明微球具有良好的封堵效果,有望在实际应用中提升原油采收率。Using a free-radical photoinitiator: lithium phenyl-2,4,6-trimethylbenzoylphosphinate(LAP),successfully initiate the inverse microemulsion polymerization of acrylamide(AM) and 2-acrylamide-2-methylpropanesulfonic acid(AMPS) as monomers at room temperature, successfully prepared nano-polyacrylamide.The polyacrylamide microspheres have good spherical shape and relatively uniform particle size distribution, and the average size is 50.2 nm.Under the salinity of 70 000 mg/L,the swelling ratio for 6 d is 3.2 times, and the swelling ratio for 6 d at 60 ℃ is 3.4 times.The polyacrylamide has good temperature and salt resistance.In the sand-packing pipe control and flooding experiment, the plugging rate can reach up to 97.2%,indicating that the microspheres have a good plugging effect and are expected to improve oil recovery in practical applications.

关 键 词：纳米级聚丙烯酰胺 光引发 封堵效果 制备与性能 

分 类 号：TQ326.4[化学工程—合成树脂塑料工业]