Interfacial properties of Daqing crude oil-alkaline system

被引：11

作者：

Lin Mei-qin ^{[1
]}

Xu Xue-qin ^{[1
]}

Lv Jing ^{[2
]}

Zong Hua ^{[3
]}

Li Ming-yuan ^{[1
]}

Dong Zhao-xia ^{[1
]}

机构：

[1] China Univ Petr, Enhanced Oil Recovery Res Ctr, Beijing 102249, Peoples R China

[2] PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China

[3] SINOPEC, Shengli Engn & Consulting Co Ltd, Dongying 257026, Shandong, Peoples R China

来源：

PETROLEUM SCIENCE | 2011年 / 8卷 / 01期

关键词：

Alkali; interfacial tension; interfacial shear viscosity; Zeta potential; turbidity; STABILITY; WATER; EMULSIONS;

D O I：

10.1007/s12182-011-0120-6

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The oil/water interfacial properties of crude oil emulsions formed by alkaline/surfactant/polymer (ASP) flooding in the Daqing Oilfield were investigated in this paper by the measurement of interfacial tension, interfacial shear viscosity and Zeta potential of the oil/water system. The result showed that both NaOH and Na(2)CO(3) could react with acid substances in the crude oil to produce interfacially active components, which are adsorbed on the interfaces between the aqueous phase and oil phase, resulting in a decrease of the interfacial tension, negatively charging the surface of oil droplets, but making little change in the interfacial shear viscosity. For the same ionic strength of NaOH and Na(2)CO(3), the interfacial tension of NaOH solution-crude oil system is lower, but the interfacial shear viscosity of NaOH solution-crude oil system is higher, than that of Na(2)CO(3), solution-crude oil system. The negative value of the Zeta potential on the surface of the oil droplets is large. Accordingly, the O/W emulsion of NaOH solution-crude oil system is more stable than that of Na(2)CO(3), solution-crude oil system.

引用

页码：93 / 98

页数：6

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