【摘要】：目前,國內外驅油用聚合物的耐溫性、抗鹽性等難以滿足實際生產的需要。為了提高聚合物的性能,本文合成出了一種雙尾型丙烯酰胺類疏水締合聚合物,并對其性能進行了評價。 在對現(xiàn)有的疏水單體結構認識、分析的基礎上,提出了本文的分子設計思路：采用雙尾結構以及在疏水鏈中引入苯環(huán),提高聚合物的增黏性和耐溫抗鹽性。在上述分子設計理論的指導下,設計了一種未經(jīng)文獻報道的新型雙尾型疏水單體(N-苯乙基-N-十四烷基甲基丙烯酰胺,PETMAM):采用有機合成的手段合成了該單體,并采用紅外光譜和核磁譜圖對單體的結構進行了表征。 采用光引發(fā)膠束聚合的方法合成出了雙尾型丙烯酰胺類疏水締合聚合物(DTHAP-14),用紅外、紫外、核磁以及掃描電鏡對聚合物的結構進行了表征。對聚合物合成過程中的影響因素進行了研究：在聚丙烯酰胺合成條件的基礎上,研究了丙烯酸加量、無機鹽(氯化鈉)、疏水單體含量、表面活性劑用量(十二烷基硫酸鈉,SDS)等條件對疏水締合聚合物性能的影響,確定了合適的聚合條件。 對聚合物的溶液性能進行了研究：采用黏度法作為評價的主要手段,評價了聚合物的溫敏性、鹽敏性、流變性、抗老化性以及黏彈性等。與部分水解聚丙烯酰胺的相關性能進行對比可以發(fā)現(xiàn),雙尾型疏水締合聚合物更適合作為三次采油用聚合物。 對聚合物的驅油性能進行了評價：在80℃下,用不同礦化度、不同濃度的聚合物在不同滲透率巖心中進行了驅替實驗。結果表明：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，

本文編號：2387770