Estimating Solution Gas-Drive Future Well Performance As A Function Of Oil Mobility Profile

Abstract

Wiggins et al. pointed out the key to know a solution gas-drive performance lies in its mobility function. In predicting future inflow performance relationship of a solution gas-drive reservoir, the underlying assumption of almost all available correlations is the oil mobility profile stays the same throughout a reservoir life. However, in order to know the complete mobility profile of a reservoir, one of the parameters that has to be know is the reservoir’s saturation distribution – which it is not. This study aims to generalize oil mobility profile of solution gas-drive reservoirs to solve the issue. All cases for this study are generated using commercial reservoir simulator. By incorporating the generalized oil mobility profile into Standing’s definition of future well performance, the new method requires only a single flow data test to be able to estimate future performance and gives a more accurate estimation compared to other method that also requires a single flow data test.