壬基酚聚氧丙烯醚硫酸盐-Na2CO3-桩西原油体系的油-水动态界面张力  

DYNAMIC INTERFACIAL TENSION OF OIL-WATER IN NONYLPHENOL POLYOXYPROPYLENE ETHER SULFATE-Na_2CO_3-ZHUANGXI CRUDE OIL SYSTEM

作　　者：刘海涛[1] 葛际江[1] 张贵才[1] 梁保红[1] 曾家新[1] 

机构地区：[1]中国石油大学石油工程学院,山东青岛266555

出　　处：《石油学报（石油加工）》2008年第6期733-738,共6页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家863项目(2006AA062227，2007AA062201);新世纪优秀人才计划(NECT-07-0846);山东省泰山学者计划资助

摘　　要：合成了壬基酚聚氧丙烯醚硫酸盐(NPPS)表面活性剂。以NaCl质量分数0.5%的盐水为模拟地层水,分别配制了NPPS、Na_2CO_3及Na_2CO_3-NPPS复配物与桩西原油的混合体系,测定了体系的油-水动态界面张力。结果表明,单独使用Na_2CO_3或NPPS都无法使盐水-桩西原油体系的油-水界面张力降到0.01 mN/m以下。采用NPPS与Na_2CO_3复配,协同效应明显,当体系中Na_2CO_3质量分数大于0.35%时,仅需质量分数0.0025%的NPPS,体系中油-水界面张力即可以降至10^(-4)mN/m以下。Nonylphenol polyoxypropylene ether sulfate（NPPS）, a candidate surfactant for enhanced oil recovery, was synthesized. Dynamic interracial tensions of oil-water were examined in the systems of NPPS, Na2 CO3 and Na2 CO3-NPPS combinational, respectively, with Zhuangxi crude oil, into which 0.5% NaCl （mass fraction） was added to imitate Zhuangxi formation water. It is found that interracial tension of oil-water could not reach 0.01 mN/m in the Na2CO3-Zhuangxi crude oil system or NPPS-Zhuangxi crude oil system. NPPS was of a good synergistic effect with Na2CO3, and only 0. 0025G （mass fraction） NPPS was needed to lower interfacial tension of oil water to 10 4 mN/m in the system of Na2CO3-NPPS-Zhuangxi crude oil when more than 0.35G mass fraction of Na2CO3 was added.

关 键 词：壬基酚聚氧丙烯醚硫酸盐(NPPS) 动态界面张力 碱 复配 协同效应 

分 类 号：O647.2[理学—物理化学]