NEW DERIVED CORRELATIONS FOR LIBYAN CRUDE OIL TO ESTIMATE BUBBLE-POINT PRESSURE

  • Mustafa Sharrad Dept. of Chemical and Petroleum Engineering, Sabratha Faculty of Engineering, Sabratha University, Sabratha, Libya
  • Hamid Hakim Abd-Alrahman Dept. of Chemical and Petroleum Engineering, Sabratha Faculty of Engineering, Sabratha University, Sabratha, Libya
Keywords: PVT properties, Empirical Correlations, Bubble point pressure

Abstract

The key factor of all petroleum engineering calculation is the knowledge of the PVT (Pressure, Volume, Temperature) parameters, such as determination of oil and gas flowing properties, predicting production performance in the future, production facilities designing and enhanced oil recovery planning methods. Those PVT properties are ideally determined experimentally in the laboratory. However, some of these experimental data is not always available; consequently, empirical correlations are used to estimate them. Many researchers have been focusing on models for predicting reservoir fluid properties from the available experimental PVT data, such as reservoir pressure, temperature, crude oil API gravity, gas oil ratio, formation volume factor, and gas gravity. The present study compares between some of the available empirical PVT correlations for estimating the bubble point pressure of some Libyan crude oils based on 35 data point samples from different Libyan oil fields. In the second part of this study, a new correlation has been derived to predict the bubble point pressure using Eviews software and compares the output results of this new correlation with some derived correlations found in the literature using statistical analysis such as the Average Absolute Error (AARE). The results showed an AARE as low as 8.7%, for bubble point pressure estimated by this new derived correlation. These results are valid to compare to other driven empirical correlations that have been evaluated. 

Author Biographies

Mustafa Sharrad, Dept. of Chemical and Petroleum Engineering, Sabratha Faculty of Engineering, Sabratha University, Sabratha, Libya

Dept. of Chemical and Petroleum Engineering, Sabratha Faculty of Engineering, Sabratha University, Sabratha, Libya

Hamid Hakim Abd-Alrahman, Dept. of Chemical and Petroleum Engineering, Sabratha Faculty of Engineering, Sabratha University, Sabratha, Libya

Dept. of Chemical and Petroleum Engineering, Sabratha Faculty of Engineering, Sabratha University, Sabratha, Libya

Published
2019-04-25
How to Cite
Sharrad, M., & Abd-Alrahman, H. (2019). NEW DERIVED CORRELATIONS FOR LIBYAN CRUDE OIL TO ESTIMATE BUBBLE-POINT PRESSURE. Scientific Journal of Applied Sciences of Sabratha University, 2(1), 1-13. Retrieved from https://jas.sabu.edu.ly/index.php/asjsu/article/view/27