scholarly journals Selection of Optimum Surfactant Formulations with Ultralow Interfacial Tension for Improving the Oil Washing Efficiency

ACS Omega ◽  
2021 ◽  
Author(s):  
Haihua Pei ◽  
Jingling Shan ◽  
Guicai Zhang ◽  
Jiazhen Zheng ◽  
Jianwei Zhao
Keyword(s):  
Interfacial Tension ◽  
Washing Efficiency ◽  
Ultralow Interfacial Tension ◽  
Selection Of

Synthesis and Interfacial Activity of Alkyl Polyoxypropylene Sulfonate for Chemical Combination Flooding

2012 ◽  
Vol 550-553 ◽  
pp. 3-9
Author(s):  
You Yi Zhu ◽  
Zhang Lei Ning ◽  
Qing Feng Hou ◽  
Ming Lei ◽  
Guo Qing Jian
Keyword(s):  
Salt Tolerance ◽  
Interfacial Tension ◽  
Divalent Cation ◽  
Carbon Chain ◽  
Carbon Chain Length ◽  
Formation Water ◽  
Interfacial Activity ◽  
Chemical Combination ◽  
Ultralow Interfacial Tension ◽  
Oil Formation

A serious of alkyl polyoxypropylene sulfonate surfactant was synthesized. The O/W interfacial activity of alkyl polyoxypropylene sulfonate surfactant was investigated. The results showed that the interfacial tension of Indonesia crude oil/formation water could reach ultralow level (10-3mN/m order of the magnitude) under weak alkali (Na2CO3) concentration from 0.4wt% to 1.0wt% with C16PO8S, C16PO10S, C18PO8S and C18PO10S alkyl polyoxypropylene sulfonate respectively. These surfactants showed good interface activity and salt and divalent cation tolerance ability. Combinations of alkyl polyoxypropylene sulfanate homologies with different carbon chain length could significantly improve the interface activity. The IFT of Indonesia oil/formation water could reach ultralow interfacial tension under alkali free conditions. The combination of alkyl polyoxypropylene sulfonate surfactant with petroleum sulfonate could improve the salt tolerance ability of formula.

Instability of Emulsions Made with Surfactant–Oil–Water Systems at Optimum Formulation with Ultralow Interfacial Tension

Langmuir ◽  
2018 ◽  
Vol 34 (31) ◽  
pp. 9252-9263 ◽  
Author(s):  
Ronald Marquez ◽  
Ana M. Forgiarini ◽  
Dominique Langevin ◽  
Jean-Louis Salager
Keyword(s):  
Interfacial Tension ◽  
Water Systems ◽  
Optimum Formulation ◽  
Oil Water ◽  
Ultralow Interfacial Tension
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