The Open Fuels & Energy Science Journal

2014, 7 : 55-61
Published online 2014 October 03. DOI: 10.2174/1876973X01407010055
Publisher ID: TOEFJ-7-55

Model for Rheological Behavior of Crude Oil and Alkali-Surfactant- Polymer Emulsion

Renyi Cao , Linsong Cheng and Y. Zee Ma
MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing, China.

ABSTRACT

Characterization of rheological behavior of alkali-surfactant-polymer (ASP) solution and oil emulsion is difficult, due to the complex chemical components and various physiochemical reactions with oil during chemical flooding. Through rheological experiments of ASP and crude oil emulsion, this paper presents the studies on influencing factors of rheological behavior, including interfacial tension, polymer and water cut, and discusses the stability mechanism of ASP and crude oil emulsion. The relationships among viscosity, interfacial tension, water cut and sheer rate were built through fitting the experimental data. The model and calculation can be used to more accurately simulate the ASP flooding in oil reservoirs.

Keywords:

Emulsion, chemical flooding, rheological behavior, viscosity mode.