... Although, experimental method gives an accurate description of gas compressibility factor, it is very expensive. The method is also considered complex when compared with other evaluation methods because of the enormous time consumed during the laboratory analysis and the difficulty associated...

... pipelines and flowlines. Over the years, several correlations for estimating gas compressibility factor have been developed. However, these correlations have not been so successful in predicting the compressibility factor for High pressure-High temperature (HPHT) reservoirs and this explains why...

... Spline Method correlation Oil Viscosity difference method interpolation technique gas compressibility factor data point good result society of petroleum engineers Reservoir analysis interpolation method order polynomial Introduction The effort of achieving reliable reservoir and well...

... The gas compressibility factor, Z is calculated using ( Dranchuk and Abou-Kaseem, 1975 ; Peng and Robinson, 1976 ) correlations. ( Peng and Robinson, 1976 ) correlation is recommended for HPHT well and for all natural gas. To account for gas migration, ( Davies and Taylor, 1950 ; Harmathy, 1960 ) bubble...

... Abstract Accurate prediction of gas compressibility factor is important in engineering applications such as gas metering, pipeline design, reserves estimation, gas flow rate, and material balance calculations. This factor also is important in calculating gas properties such as gas formation...

... for the Niger Delta natural gas is Brill and Beggs. It has a rank of 2.82, a percentage absolute error (E a ) of 3.234 and the best performance plot. Brill and Beggs is recommended to be used in situations where laboratory PVT data of natural gas compressibility factor is not available for the Niger Delta gas...