(73b) Impact of Pressure on Thermodynamic Behavior of Waxy Model Oil with Methane

This research delves into the impact of pressure on the thermodynamic behavior of waxy model oil. High pressure Differential Scanning Calorimeter (DSC) is utilized to understand pressure’s effect on wax deposition and to determine wax appearance temperature (WAT) and precipitation under varying pressures. At higher pressures, the heavier molecules are more likely to remain dissolved, reducing waxy oil properties. Conversely, reduced pressure, typical in production and transportation, can induce precipitation of these components. The paper underscores the pressure dependency of oil’s phase behavior, noting that high pressures can alter fluid phases, thereby influencing WAT. This behavior is crucial for understanding component interactions under different pressure conditions. The use of laboratory experiments, particularly Differential Scanning Calorimetry (DSC), is emphasized as a means to understand pressure's effect on wax deposition and to determine WAT under varying pressures. Understanding these dynamics is pivotal for the oil industry in developing effective strategies to address wax-related issues.