New correlations of condensate gas ratio (cgr) – part 1: for eastern niger delta region

This work aim at the use of regression method to develop condensate gas ratio (cgr) correlations using dataset obtained from eastern niger delta region. The procedure of dividing the formation into three distinct geologic zones was adopted. These zones are: transitional paralic, paralic and marine paralic zones. The basic parameters used for the correlation development are: reservoir depth (ft), reservoir pressure (psia); reservoir temperature (°f) all at (goc/gdt/gwc and these parameters are data easily obtained from the field. Matlab and excel software packages were used as the implementation platform. Both quantitative and qualitative assessments were employed to evaluate the accuracy of the new models to the experimental values. The models have very impressive statistical parameters with good ranks and better performance plots. However, caution should be exercise for the use of these models since the data used for their development was not robust enough; especially their use beyond the range of data used for their development.