Describing viscosity of IOR polymer solutions with differential non-Newtonian fluid models
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- Master's theses (TN-IEP) 
The non-Newtonian viscosity of multiple of polymers was measured. For tests were taken polymers that are widely used in oil industry. They are: HEC; Xanthan gum; Polypack; Flopaam: 5115VHM, 5115VLM, AN 125VHM, AN 125VLM, 3610VHM, 3130S. These polymers were dilute to a number of low concentrations and viscosity for all of them was measured at rheometer with a cone-plate tool. All calculated and measured values are recorded in tables and presented in Experimental section . The graphical analysis was performed for each polymer and trends were identified and compared between different polymers. The regions with “very dilute” concentrations were identified. This helped to find a criterion for “very dilute” solution. Such knowledge is very important due to gives a key to understanding what model can be applied for this particular polymer at this particular concentration. Then data from measurements were tested against the prediction curves of several advanced, physic-based non-Newtonian models. These models are Finitely Extensible Nonlinear Elastic-Peterlin (FENE-P) dumbbell model, which was designed for dilute concentrations and exponential Phan-Thien-Tanner model (PTT), which was designed for concentrated solutions. The ranges of concentrations with a good correlation between data points and model curves were identified for each polymer. Results from different polymers were compared and some similarity in trends identified. The section Conclusions  sum up all conclusions that were made after experiments and analysis of model prediction.
Master's thesis in Petroleum Engineering