publication . Article . 2017

Measurement and Prediction of Time-independent and Time-dependent Rheological Behavior of Waxy Crude Oil

Yavar Karimi; Ali Reza Solaimany Nazar;
Open Access English
  • Published: 01 Jan 2017 Journal: Iranian Journal of Oil & Gas Science and Technology (issn: 2345-2412, eissn: 2345-2420, Copyright policy)
  • Publisher: Petroleum University of Technology
Abstract
Wax deposition phenomenon changes the rheological behavior of waxy crude oil completely. In the current work, the rheological time-dependent and time-independent behaviors of waxy crude oil samples are studied and flow curve and compliance function are measured for the oil samples with various wax contents at different temperatures. A decrease in temperature and an increase in wax content lead to an increase in the viscosity and yield stress but a significant drop in compliance function. A modified Burger model is developed to predict the behavior of the compliance function and a modified Casson model is used to predict the flow curve of the waxy crude oil sampl...
Subjects
free text keywords: waxy crude oil, viscoelastic properties, rheological model, flow curve, Petroleum refining. Petroleum products, TP690-692.5, Gas industry, TP751-762
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