A Simple Multivariate Bubble Point Correlation for Deep Offshore Niger Delta Crude.

In this study, a new linear bubble point correlation for deep offshore Niger Delta crude was developed using Excel. Using 129 data points characterizing crude from deep offshore Niger Delta fields, a simple multivariate model was developed by dividing the data points into modeling and validation data. With R2 of 0.999, the new model was found to satisfactorily predict the bubble point pressure of deep offshore Niger Delta crude samples. However, it was discovered that for crude samples with API density less than 50, the percentage error between predicted actual bubble points were less than 10%. While for crude samples with API gravity above 50, percentage error was above 10%, reaching up more than 60% in for some API gravities. Therefore, it was deduced that the developed model is applicable to deep offshore Niger Delta crude samples with API densities less than 50. [ABSTRACT FROM AUTHOR]