摘要
本文针对胜利油田Ⅲ类油藏采出率较低,缺少适用的聚驱材料的现状,研究了自制的按丙烯酰胺(AM)、丙烯酸(AA)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)的单体摩尔比为74∶25∶1合成的AM-AA-AMPS三元共聚物(LH-2500)的相关性能,并与MO-4000及一种疏水缔合产品HYPAM-1进行了对比。采用光散射测得LH-2500相对分子质量在1.0×107以上。LH-2500溶解性能良好,溶解时间小于2 h;85℃Ⅲ型盐水中1500 mg/L LH-2500溶液黏度达16mPa.s;最重要的是LH-2500无疏水缔合行为及地层吸附。双管模拟驱油实验表明,注入聚合物LH-2500溶液后的采收率明显高于注入MO-4000溶液的,在水驱(采收率36.8%)基础上提高采收率达29%;此外LH-2500与石油磺酸盐SLPS-01C复配表现出较好的协同效应,在水驱(采收率20.8%)基础上提高采收率达35%。
Due to the lack of the suitable polymer flooding materials,so far the oil recovery percent of the shengli Ⅲ reservoir is low.In this paper,the performance of a polymer flooding material for shengli Ⅲ reservoir,named as LH-2500,which was synthesized in the laboratory in the presence of acrylamide,acrylic acid and 2-acrylamide-2-methyl-propyl sulphonic acid at the molar ratio of 74∶25∶1,was mensurated and contrasted with MO-4000 and a hydrophobic material HYPAM-1.The results indicated that LH-2500 solution,obtained with Shengli Ⅲ salt water,had higher apparent viscosity,reaching 16 mPa·s at LH-2500 concentration of 1500 mg/L at 85℃.What＇s more,LH-2500 had no hydrophobically associating behavior in Shengli Ⅲ salt water and almost no absorption on reservoir sand.Mw as determined by light scattering exceeded the order of magnitude of 107.Double tube oil displacement experiments indicated that 1500 mg/L LH-2500 solution could improve oil recovery by 29% after 36.8% oil recovered by water flood,which was much higher than that of MO-4000.The higher enhancement in oil recovery was observed with 3000 mg/L petroleum sulfonate SLPS-01C＋1500 mg/L LH-2500,being of 35 % after 20.8% oil recovered by water flood,which exhibited the existence of good synergistic effects between LH-2500 and SLPS-01C.
出处
《油田化学》
CAS
CSCD
北大核心
2010年第2期200-204,共5页
Oilfield Chemistry
关键词
耐温抗盐
丙烯酰胺类聚合物
提高采收率
石油磺酸盐
协同效应
temperature tolerant and salt resistant
acrylamide copolymer
improving oil recovery
petroleum sulfonate
synergistic effects
