【摘要】 酸化处理是油气井增产增注的重要措施,而其中稠化剂是酸液中重要的酸液添加剂。以二甲基二烯丙基氯化铵、丙烯酰胺和2-甲基-2-丙烯酰胺基丙磺酸单体为原料,利用反相乳液聚合,合成了酸液稠化剂SC-1。实验结果表明:SC-1分子量高,增黏能力强,易溶于水和酸溶液,受剪切影响较小;SC-1的缓速性能优良,具有良好的热稳定性、剪切稳定性、抗盐能力和化学相容性;SC-1在酸液中具有较好的增黏性能,用它配制的稠化酸增稠效果好,在低于75℃的井下SC-1用量为2.5%即可达到要求,在高温下用量适当加大。更多还原

【Abstract】 Acidification of reservoir formations is an important measure in stimulation jobs,and thickening agent plays a role in acidification.Using dimethyl diallyl ammonium chloride(DMDAAC) and 2-Acrylamido-2-methylpropanesulfonic acid(AMPS) as the reaction monomers,an acid thickening agent,SC-1 was synthesized utilizing inverse emulsion polymerization.Lab researches showed that SC-1 has a high molecular weight and high viscosity in aqueous solution.SC-1 has a good solubility in water and acid solution.The performance of SC-1 is not affected by shearing action and is stable at high temperatures.SC-1 can be used in saltwater and with other commonly used additives.SC-1 can effectively viscosify acid solutions.The concentration of SC-1 at less than 75 ℃ is 2.5%,and should be higher at elevated temperatures.更多还原