摘要
采用具有疏水结构的丁苯烯(PB)和具有亲水结构的丙烯酰胺(AM)、丙烯酸(AA)、2-丙烯酰胺-2甲基丙磺酸(AMPS)合成双亲性聚合物。聚合物链中的苯环结构可嵌进稠油沥青质的板结结构中,进入稠油内部聚合物链上的亲水基团可促进O/W乳状液的形成,进而降低稠油黏度。聚合物的红外光谱、热重分析、凝胶渗透色谱结果表明,单体AM,AA,AMPS和PB均参与了共聚,较高的热解温度(250℃)保证了降黏剂的热稳定性,较低的相对分子质量(8×10^4~10×10^4)之间有利于降黏剂进入到稠油的“内部”。以绥中36-1脱气稠油(SZ)和江汉油区八面河稠油(BMH)为降黏处理对象,降黏剂在一定条件下(70℃,质量分数为0.5%和0.6%),降黏率分别为86.14%和83.85%,表明双亲性聚合物具有优良的降黏效果,且在一定条件下(70℃,质量分数0.5%),降低油水体积比(低于6∶4)可有效提高降黏效果。
Amphiphilic polymers were synthesized using butadiene(PB)with a hydrophobic structure and acrylamide(AM),acrylic(AA),2-acrylamide-2 methylpropane sulfonic acid(AMPS)with a hydrophilic structure.The benzene ring structure in the polymer chains can be embedded in the dense structure of the heavy oil asphaltenes.The hydrophilic groups on the polymer chains inside the heavy oil can promote the formation of O/W emulsions,thereby reducing the viscosity of the heavy oil.The IR,TG,and GPC characterization results of the polymer indicate that all four monomers AM,AA,AMPS,and PB have participated in the copolymerization.The higher pyrolysis temperature(250℃)ensures the thermal stability of the viscosity reducing agent,and the lower molecular weight(8×10^4~10×10^4)is helpful for the viscosity reducer to enter the“inside”of the heavy oil.With Suizhong 36-1 degassed heavy oil(SZ)and Bamianhe heavy oil(BMH)in Jianghan Oil Region as viscosity reduction target,when the viscosity reduction agent is under certain conditions(70℃,the mass fraction is 0.5%and 0.6%respectively),the viscosity reduction rates of the heavy oil are 86.14%and 83.85%,respectively,showing that amphiphilic polymers have excellent viscosity reduction effects.Under certain conditions(70℃,mass concentration is 0.5%),reducing the oil-water volume ratio(less than 6∶4)can effectively improve the viscosity reduction effect.
作者
马超
张明华
张雄
王哲
张鹏
张雅楠
张熙
Chao Ma;Minghua Zhang;Xiong Zhang;Zhe Wang;Peng Zhang;Yalan Zhang;Xi Zhang(College of Petroleum Engineering,Key Laboratory of Oil and Gas Drilling and Production Engineering,Yangtze University,Wuhan 430100,China;State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute,Sichuan University,Chengdu 610065,China;Drilling Fluid Company of Petro China Western Drilling Engineering Co.,Ltd.,Karamay 834000,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2020年第4期61-66,共6页
Polymer Materials Science & Engineering
基金
新疆维吾尔自治区自然科学基金资助项目(2019D01A91)
高分子材料工程国家重点实验室(四川大学)开放课题基金(sklpme2018-4-36)。
关键词
乳液聚合
双亲性聚合物
疏水单体
稠油降黏
降黏效果
emulsion polymerization
amphiphilic polymer
hydrophobic monomer
heavy oil viscosity reduction
viscosity reduction effect
