反相乳液聚合制备疏水缔合聚合物AAMS-2及其压裂液性能评价  

Preparation of hydrophobically associating polymer AAMS-2 by inverse emulsion polymerization and its performance as a fracturing fluid thickener

作　　者：吴伟 刘平平 武继辉[2] 孙昊 张晓云 

机构地区：[1]中国石油大学(华东)理学院,山东青岛266580 [2]中石化胜利油田滨南采油厂,山东滨州256600

出　　处：《应用化工》2016年第2期203-206,共4页Applied Chemical Industry

基　　金：国家自然科学基金课题(51374230)

摘　　要：采用反相乳液聚合方法制备了AM(丙烯酰胺)/AMPS(2-丙烯酰胺-2-甲基丙磺酸)/疏水单体M(二甲基十八烷基烯丙基氯化铵)/刚性单体S(4-丙烯酰基氨基苯磺酸钠)的四元疏水缔合聚合物AAMS-2,并用红外光谱对聚合物进行了表征。热重分析(TGA)表明聚合物在240℃下化学结构稳定。利用扫描电镜(SEM)清晰观察到AAMS-2的乳液颗粒和水溶液形成的网状结构。AAMS-2压裂液具有良好的粘弹特性、携砂、破胶和岩心低伤害特性。耐温耐剪切测试表明体系具有优良的耐温能力,0.6%的AAMS-2压裂液在150℃、170 s^(-1)条件下剪切2 h,表观粘度保持在50 mPa·s以上。A quaternary hydrophobically associating polymer AAMS-2 was synthesis by inverse emulsion polymerization protocol, using AM （acrylamide）/AMPS （ 2-acrylamido-2-methylpropane sulfonate acid） / hydrophobic monomer M （allyldimethyldodecylammonium chloride） and steric hindered monomer S （4- acryloyl amino benzene sulfonate） as the comonomers. The polymer structure was characterized by FTIR spectroscopy. Thermal analysis （TGA） measurement revealed that the polymer is quite stable under 240 ℃. Clear network microstructure of the AAMS-2 solution was observed by scanning electron microscopy （SEM）. Satisfactory results were found in evaluating its sand-carrying, gel-breaking and core damage properties. The viscosity of 0.6% AAMS-2 fracturing fluid remained above 50 mPa · s at 150 ℃ and 170 s^-1 after 2 h,indicating the polymer has satisfactory high-temperature and shearing stabilities.

关 键 词：乳液聚合 压裂液 疏水缔合 

分 类 号：TQ317[化学工程—高聚物工业] TE39[石油与天然气工程—油气田开发工程]