Analysis of influence factors of start-up yield stress for heavy oil emulsions. (3rd June 2019) - Jing, Jiaqiang
Abstract: Experimental research on influence factors of yield characteristic for heavy oil emulsions, including water cut (0–50%), start-up temperature (4–20 °C), statics time (30 & 60 min) and constant shear stress (0.01–10 s −1 ). Results reveal that start-up yield stress increases with water cut and reaches maximum at 30% (phase inversion point). And the start-up yield stress displays a decay with increasing in start-up temperature and a rise with increasing of constant shear rate. Nevertheless, the coupling effect of water cut and static time was complex, which start-up yield stress increases with static time at 0% but decreases at 10–30%.