A Comparison Study between Steady-State and Dynamic Operation Models on the HTPS Performance

Given the importance of enhance the performance of oil separators in production field, this research study the separation process through simulations based on a real field data, WQ-2 south of Iraq-Basra. By implementing both dynamic and steady-state approaches in Aspen HYSYS V.14, the optimization was carried out for each approach for comparison. Results from the steady-state simulation revealed limited improvement, with closely converging iterations and changes applied to only one variable at a time. In contrast, the dynamic simulation given more realistic and favorable results, as manual adjustments were applied in a real-time response to the actual field dynamics range and conditions. The result shows that the maximum OVFR=15050 m 3 /h and CO=0.1999099 at T= 60 °C and P= 15 barg for static model, while the OVFR=1580.9 m 3 /h, CO=0.0093 at P=14 barg, T=76 °C where the operation time 120 min for dynamic. Compared to the static approach, the dynamic approach was efficient to reach better performance when the selected parameters were optimized and that led to a substantial improvement in the separation efficiency. Therefore, the dynamic simulation could be considered a mandatory approach when the overall separator efficiency need to be enhanced.