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Evaluation of Viscosity Correlations for Niger Delta Gas Reservoirs

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2015

Key Words:

Author NameUniversity of Author
Abstract (2. Language): 
An accurate prediction of viscosity as a property of Natural gas is very important in the design and operation of fluid transportation, production, and processing. This paper presents the evaluation of gas viscosity correlations for the Niger Delta gas reservoirs. The correlations were evaluated using statistical analysis such as percentage mean relative error, percentage absolute error, standard deviation of the mean relative error and absolute error as well as the coefficient of correlation. These statistical parameters were combined into a single parameter called rank using Multiple Statistical Optimization Model (MULSON). The analysis was done using 319 data sets obtained from Niger Delta gas reservoirs. From the statistical analysis, Dempsey (1965) correlation ranked the best with the numerical value of 0.705 and also with the best performance plot. Charts of Viscosity against Pseudo Reduced Pressure and Temperature as well as Viscosity Ratio versus Pseudo Reduced Pressure and Temperature were developed based on Dempsey (1965) correlation for Niger Delta region. This work is valid for data range of 1.4 ≥ Tr ≥ 1.90 and 0.2 ≥ Pr ≥ 10.80.
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