双尾型丙烯酰胺类疏水缔合聚合物的合成与性能评价  

Synthesis and performance evaluation of a hydrophobic associating acrylamide-based copolymer with double-tailed hydrophobic monomer

作　　者：蒲万芬[1,2] 杜代军 任豪[3] 姜峰[1,2] 刘锐[1,2] 

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]油气藏地质及开发工程国家重点实验室(西南石油大学),四川成都610500 [3]中石油新疆油田分公司风城油田作业区,新疆克拉玛依834000

出　　处：《现代化工》2016年第4期117-120,122,共5页Modern Chemical Industry

摘　　要：为解决油田用丙烯酰胺类聚合物抗温、抗盐性能差的问题,以丙烯酰胺、丙烯酸及双尾型疏水单体N-苯乙基-N十二烷基甲基丙烯酰胺(PEDMAM)为主要原料,合成了一种新型疏水缔合聚合物(DTHAP-12)。采用KYPAM作为对比,研究了DTHAP-12的增黏性能、抗温抗盐能力和驱油性能,结果表明,聚合物的临界缔合质量浓度在2 400 mg/L左右,95℃聚合物的黏度保留率达72.39%,同时在一定的矿化度范围内表现出明显的盐增稠效应。岩心驱替实验表明,水驱至含水率为98%后,0.3 PV DTHAP-12驱及后续水驱的采收率提高了15.14%;聚合物驱第2段塞DTHAP-12采收率提高了10.53%,远远高于第2段塞KYPAM的3.28%。In order to improve salt resistance and temperature tolerance of the acrylamide-based copolymer,a hydrophobic associating copolymer（ DTHAP-12） is synthesized by using acrylamide（ AM）,acrylic acid（ AA） and Nphenethyl-N-dodecylmethacrylamide（ PEDMAM） as monomers. Taking KYPAM as control,the viscosifying ability,salt resistance and temperature tolerance of DTHAP-12 are studied. The critical association concentration of DTHAP-12 is about 2 400 mg / L. Even if the temperature is raised to 95° C,the viscosity retention rate is also kept for 72. 39%.Meanwhile,with a certain degree of mineralization,polymer shows obvious salt thickening efficiency. When water cut is achieved 98% with water flooding,15. 14% of oil recovery can be increased by subsequent 0. 3 PV DTHAP-12 flooding and water flooding. For DTHAP-12 flooding,the oil recovery is further increased by 10. 53%,which is higher than that of KYPAM（ 3. 28%）.

关 键 词：疏水缔合聚合物 黏度 耐温抗盐 

分 类 号：TE357[石油与天然气工程—油气田开发工程]