The Effect of Asphaltene Content on Bubble Point Pressure of Oil Reservoirs: Experimental and Modeling Study

DOI: 10.5176/2251-189X_SEES19.70

Authors: Osamah Alomair, Mohamed El Aily1, Atheer Alfadhli1, and Jmayel Aldhafiri

Abstract: The bubble point pressure is crucial for understanding how petroleum behaves within the reservoir and indicates the probable drive mechanisms. In the absence of the experimentally measured bubble point pressure, it is necessary for the engineer to make an estimate of this crude oil property from the readily available measured producing parameters. Asphaltene content is one of important parameter in the crude oil reservoir composition and it affects the ability of oil reservoir to keep in stable single phase,wherefore there is a direct relation between asphaltene content and bubble point pressure. This paper presents a new model to predict the bubble point pressure using a new parameter asphaltene content percentage and other parameters such as reservoir temperature, Gas oil ratio, API gravity and wellstream molecular Weight. A new model calculates the bubble point with correlation coefficient of 95.7 %.

Keywords: Bubble point pressure, Asphaltene content, Oil reservoir, New model.