Rheological and Emulsification Behavior of Xinjiang Heavy Oil and Model Oils
Jiaqiang Jing1, 2, Jiatong Tan1, *, Haili Hu1, Jie Sun1, Peiyu Jing1
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, No.8 Xindu Avenue, Xindu District, Chengdu City, Sichuan Province, P.R. China
2 Oil & Gas Fire Protection Key Laboratory of Sichuan Province, Chengdu City, Sichuan Province, P.R. China
Abstract
Transparent model oils are commonly used to study the flow patterns and pressure gradient of crude oil-water flow in gathering pipes. However, there are many differences between the model oil and crude oils. The existing literatures focus on the flow pattern transition and pressure gradient calculation of model oils. This paper compares two most commonly used model oils (white mineral oil and silicon oil) with Xinjiang crude oil from the perspectives of rheological properties, oil-water interfacial tensions, emulsion photomicrographs and demulsification process. It indicates that both the white mineral oil and the crude oils are pseudo plastic fluids, while silicon oil is Newtonian fluid. The viscosity-temperature relationship of white mineral oil is similar to that of the diluted crude oil, while the silicon oil presents a less viscosity gradient with the increasing temperature. The oil-water interfacial tension can be used to evaluate the oil dispersing ability in the water phase, but not to evaluate the emulsion stability. According to the Turbiscan lab and the stability test, the model oil emulsion is less stable than that of crude oil, and easier to present water separation.
Keywords: Emulsions, Heavy oil, Rheology, Viscosity.
Article Information
Article History:
Received Date: 7/12/2015
Revision Received Date: 22/06/2016
Acceptance Date: 23/06/2016
Electronic publication date: 09/08/2016
Collection year: 2016
© Jing et al.; Licensee Bentham Open.
open-access license:
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* Address correspondence to this author at the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, No.8 Xindu Avenue, Xindu District, Chengdu City, Sichuan Province, P.R. China; Tel: +86-152-028-57560;
Email: tanjiatong@outlook.com
Open Peer Review Details |
Manuscript submitted on 7-12-2015 |
Original Manuscript |
Rheological and Emulsification Behavior of Xinjiang Heavy Oil and Model Oils |