耐温抗盐疏水缔合聚合物的合成及驱油性能评价
发布时间：2018-12-20 09:10
【摘要】：目前,国内外驱油用聚合物的耐温性、抗盐性等难以满足实际生产的需要。为了提高聚合物的性能,本文合成出了一种双尾型丙烯酰胺类疏水缔合聚合物,并对其性能进行了评价。 在对现有的疏水单体结构认识、分析的基础上,提出了本文的分子设计思路：采用双尾结构以及在疏水链中引入苯环,提高聚合物的增黏性和耐温抗盐性。在上述分子设计理论的指导下,设计了一种未经文献报道的新型双尾型疏水单体(N-苯乙基-N-十四烷基甲基丙烯酰胺,PETMAM):采用有机合成的手段合成了该单体,并采用红外光谱和核磁谱图对单体的结构进行了表征。 采用光引发胶束聚合的方法合成出了双尾型丙烯酰胺类疏水缔合聚合物(DTHAP-14),用红外、紫外、核磁以及扫描电镜对聚合物的结构进行了表征。对聚合物合成过程中的影响因素进行了研究：在聚丙烯酰胺合成条件的基础上,研究了丙烯酸加量、无机盐(氯化钠)、疏水单体含量、表面活性剂用量(十二烷基硫酸钠,SDS)等条件对疏水缔合聚合物性能的影响,确定了合适的聚合条件。 对聚合物的溶液性能进行了研究：采用黏度法作为评价的主要手段,评价了聚合物的温敏性、盐敏性、流变性、抗老化性以及黏弹性等。与部分水解聚丙烯酰胺的相关性能进行对比可以发现,双尾型疏水缔合聚合物更适合作为三次采油用聚合物。 对聚合物的驱油性能进行了评价：在80℃下,用不同矿化度、不同浓度的聚合物在不同渗透率岩心中进行了驱替实验。结果表明：DTHAP-14可以提高16.9%的原油采收率。
[Abstract]:At present, it is difficult to meet the needs of practical production of polymer for oil displacement at home and abroad, such as high temperature resistance and salt resistance. In order to improve the properties of the polymer, a kind of hydrophobically associating polymer with double tail acrylamide was synthesized and evaluated. Based on the understanding and analysis of the existing hydrophobic monomer structure, the molecular design idea of this paper is put forward: adopting double tail structure and introducing benzene ring into the hydrophobic chain to improve the viscosity and temperature resistance and salt resistance of the polymer. Under the guidance of the above molecular design theory, a novel two-tailed hydrophobic monomer (N-phenylethyl-N-tetradecyl methacrylamide, PETMAM):) was designed and synthesized by organic synthesis. The structure of monomers was characterized by IR and NMR spectra. Double tailed acrylamide hydrophobically associating polymers (DTHAP-14) were synthesized by photo-initiated micellar polymerization. The structures of the polymers were characterized by IR, UV, NMR and SEM. The factors affecting the synthesis of polymer were studied. On the basis of the synthetic conditions of polyacrylamide, the addition of acrylic acid, inorganic salt (sodium chloride), hydrophobic monomer content, surfactant dosage (sodium dodecyl sulfate, sodium dodecyl sulfate) were studied. The effect of SDS) on the properties of hydrophobically associating polymers was determined. The properties of polymer solution were studied. The viscosity method was used to evaluate the temperature sensitivity, salt sensitivity, rheology, aging resistance and viscoelasticity of the polymer. Compared with the partially hydrolyzed polyacrylamide, it is found that the double tail hydrophobically associating polymer is more suitable for tertiary oil recovery. The flooding performance of polymer was evaluated: at 80 鈩，
本文编号：2387770
[Abstract]:At present, it is difficult to meet the needs of practical production of polymer for oil displacement at home and abroad, such as high temperature resistance and salt resistance. In order to improve the properties of the polymer, a kind of hydrophobically associating polymer with double tail acrylamide was synthesized and evaluated. Based on the understanding and analysis of the existing hydrophobic monomer structure, the molecular design idea of this paper is put forward: adopting double tail structure and introducing benzene ring into the hydrophobic chain to improve the viscosity and temperature resistance and salt resistance of the polymer. Under the guidance of the above molecular design theory, a novel two-tailed hydrophobic monomer (N-phenylethyl-N-tetradecyl methacrylamide, PETMAM):) was designed and synthesized by organic synthesis. The structure of monomers was characterized by IR and NMR spectra. Double tailed acrylamide hydrophobically associating polymers (DTHAP-14) were synthesized by photo-initiated micellar polymerization. The structures of the polymers were characterized by IR, UV, NMR and SEM. The factors affecting the synthesis of polymer were studied. On the basis of the synthetic conditions of polyacrylamide, the addition of acrylic acid, inorganic salt (sodium chloride), hydrophobic monomer content, surfactant dosage (sodium dodecyl sulfate, sodium dodecyl sulfate) were studied. The effect of SDS) on the properties of hydrophobically associating polymers was determined. The properties of polymer solution were studied. The viscosity method was used to evaluate the temperature sensitivity, salt sensitivity, rheology, aging resistance and viscoelasticity of the polymer. Compared with the partially hydrolyzed polyacrylamide, it is found that the double tail hydrophobically associating polymer is more suitable for tertiary oil recovery. The flooding performance of polymer was evaluated: at 80 鈩，
本文编号：2387770
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