Forecasting Hydrocarbon Production at Gas Condensate Fields Considering Phase Transformations of Reservoir Systems

Abstract

Based on the results of PVT studies, a methodology for estimating hydrocarbon recovery at various stages of a gas condensate field development, depending on the current weighted average reservoir pressure in the gas drive, is considered. In this case, the physical processes related to the phase transformations of the reservoir gas condensate mixture with a decrease in reservoir pressure in the deposit are assumed identical in the PVT bomb. That is, the effect of the porous medium is neglected. This allows describing the processes of phase transformations with the same equation of material balance, based on which it is possible to forecast hydrocarbon recovery at gas condensate fields, and provide a control over the results of phase transformation modelling of the reservoir gas condensate mixture in phase balance bomb (PVT bomb).