长脂肪链改性疏水缔合聚丙烯酰胺驱油剂的制备与性能  

STUDY ON PREPARATION AND PROPERTIES OF HYDROPHOBICALLY ASSOCIATING POLYACRYLAMIDE MODIFIED WITH LONG CHAIN FAT

作　　者：谭俊领[1,2] 黎晓茸[1,2] 刘观军[3] 张涛[1,2] 杨棠英[1,2] 

机构地区：[1]中国石油长庆油田分公司油气工艺研究院,陕西西安710021 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710021 [3]教育部轻化工助剂化学与技术重点实验室,陕西科技大学,陕西西安710021

出　　处：《精细石油化工》2012年第3期6-9,共4页Speciality Petrochemicals

基　　金：国家科技重大专项"低渗透油藏中高含水期稳产配套技术"(2011ZX05013-005)

摘　　要：以丙烯酸十八酯(ODA)为疏水单体,与丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酸(AA)通过自由基共聚法制得长脂肪链改性疏水缔合聚丙烯酰胺(PAMBA),采用红外光谱、X射线衍射对其结构进行了表征,并考察了其耐盐性、耐温性及耐剪切性能。研究发现,PAMBA水溶液中存在强烈的分子间缔合作用。合成的疏水缔合聚丙烯酰胺(PAMBA)具有阴离子磺酸基,因此具有良好的抗盐性。和未改性PAM相比,PAMBA在60℃下能保持较高的表观黏度,其耐温性和耐剪切性能明显提高。In order to develop a hydrophobically associating polyacrylamide oil-displacing agent, hydro- phobically associating polyacrylamide （PAMBA） modified with long chain fat was prepared by free radical copolymerization with octadecyl acrylate （ODA）, acrylamide （AM）, 2-acrylamido-2-methyl propane sulfonic acid （AMPS）, and acrylic acid （AA）. Fourier transform infrared spectrometer and X-ray diffraction （XRD） were used to characterize the structure of PAMBA. The salt resistance, tem- perature resistance and shear resistance of PAMBA were discussed. The results show that there are strongly intermolecular hydrophobically associating interactions in the PAMBA aqueous solution; the synthetic hydrophobically associating polyacrylamide （PAMBA） has good salt resistance. Compared with unmodified PAM, PAMBA maintains higher apparent viscosity at 60 °C, and the temperature re- sistance and shear resistance of PAMBA is improved appreciably.

关 键 词：疏水缔合聚丙烯酰胺 长脂肪链 耐盐性 耐温性 耐剪切性 

分 类 号：TQ357.461[化学工程]