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以丙烯酰胺(AM)、丙烯酸(AA)、N-烯丙基油酰胺(NAE)和3-烯丙胺基羰基-1-乙基吡啶溴化铵([mAEPy]Br)为单体,采用氧化还原引发体系,制备了一种含吡啶离子液体结构疏水缔合聚合物驱油剂AM/AA/NAE/[m-AEPy]Br。对共聚物进行了红外、核磁表征,并测定了其增黏性、剪切稀释性、耐温抗盐性,对其提高采收率能力进行了评价。结果表明:2 000 mg/L的共聚物溶液表观黏度可达510.3 m Pa·s;在剪切速率为510 s-1下,其表观黏度为27.2 m Pa·s,且在90℃时其表观黏度为42.8 m Pa·s;在10 000 mg/L NaCl、1 500 mg/L MgCl_2和1 500 mg/L CaCl_2溶液中,其表观黏度分别为21.8、27.4和27.0 m Pa·s;在模拟驱油实验中,共聚物溶液的采收率提高了11.4%。
(AM), acrylic acid (AA), N-allyl oleamide (NAE) and 3-allylaminocarbonyl-1-ethylpyridinium bromide ([mAEPy] Br) Reduction initiating system, an AM / AA / NAE / [m-AEPy] Br solution containing hydrophobic ionic liquid structure of hydrophobic association polymer was prepared. The copolymer was characterized by IR and NMR, and its tackiness, shear thinning, temperature and salt resistance were measured, and its ability to enhance oil recovery was evaluated. The results showed that the apparent viscosity of the copolymer solution at 2 000 mg / L was 510.3 mPa · s and its apparent viscosity was 27.2 mPa · s at a shear rate of 510 s-1. At 90 ℃ The apparent viscosity was 42.8 m Pa · s. The apparent viscosities were 21.8, 27.4 and 27.0 mPa · s in 10 000 mg / L NaCl, 1 500 mg / L MgCl 2 and 1 500 mg / L CaCl 2, respectively In the simulated flooding experiment, the recovery of copolymer solution increased by 11.4%.