Petroleum Engineering
1. An Experimental Study on Evaluation of Factors Influencing the Viscosity and Viscoelastic Properties of Waxy Crude Oil

Yavar Karimi; Ali Reza Solaimany Nazar

Volume 9, Issue 1 , Winter 2020, , Pages 1-15

http://dx.doi.org/10.22050/ijogst.2019.194137.1513

Abstract
  The influences of several operating factors on the viscosity of the Isfahan refinery waxy crude oil sample are studied through conducting some rheological shear rotational tests. The Taguchi design method is adopted to determine the impact of factors such as shear rate, temperature, cooling rate, wax ...  Read More

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

Yavar Karimi; Ali Reza Solaimany Nazar

Volume 6, Issue 1 , Winter 2017, , Pages 26-44

http://dx.doi.org/10.22050/ijogst.2017.44374

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 ...  Read More