原油组成对碱-表面活性剂-聚合物三元复合驱的影响  

Effect of crude oil composition on ternary composite alkali-surfactant-polymer flooding

作　　者：孙哲[1] 孙学法[1] 卢祥国[1] 陈欣[1] 喻琴[1] 田春雨 

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318 [2]中国石油大庆油田公司第一采油厂,黑龙江大庆163000

出　　处：《石油化工》2016年第6期725-730,共6页Petrochemical Technology

基　　金：黑龙江省自然科学基金重点项目(ZD201312);东北石油大学研究生创新科研项目(YJSCX2015-010NEPU)

摘　　要：采用大庆油田不同区域油水样与碱-表面活性剂-聚合物(ASP)三元复合体系相互作用,研究了原油组成对三元复合驱增油效果及采出液性质的影响;采用FTIR,GC-MS,XRF等方法对原油油水样、萃取活性组分、萃余油组分及油相中硫元素含量进行表征。表征结果显示,各油水样中的萃取活性组分均具有典型一元饱和羧酸(脂肪酸和环烷酸)峰值特征,喇嘛甸油水样萃余油正构烷烃中的重质组分含量较高,其组成与表面活性剂重烷基苯磺酸盐的组分更接近。实验结果表明,油水样中萃取活性组分及萃余油与三元复合体系间界面张力虽较高,但原油与三元复合体系间却可实现超低界面张力。The interactions between oil/water samples from different districts in Daqing oilfield with ternary composite alkali-surfactant-polymer（ASP） system were studied. The effects of the crude oil compositions on the crude oil production increment with the ASP system and the properties of the produced fluid were studied. The oil/water samples, extracted active ingredients, raffinate oil and sulfur content in the oil phase were analyzed by means of FTIR, GC-MS and XRF. It was showed that, the characteristic peaks of the active ingredients in the oil/water samples accorded with the features of typical saturated monocarboxylic acids（fatty acids and naphthenic acids）. The concentration of n-alkanes with heavy component in the raffinate oil from the Lamadian oil/water sample was higher, and its composition was closer to that of the surfactant（heavy alkylbenzene sulfonates）. It was indicated that, the interracial tensions between the ASP system and the active ingredients in the oil/ water samples or the raffinate oil were high, but there were ultra-low interracial tensions between the ASP system and the crude oils.

关 键 词：采油 原油 三元复合驱 碱-表面活性剂-聚合物 

分 类 号：TQ016[化学工程]