l The effect of gas-condensate reservoir depletion stages on gas injection and the importance of the aerosol state of fluids in this process

摘要

As one of the primary techniques for enhanced oil recovery, the gas injection method has been investigated widely. However, introducing "dry gas" into a gas-condensate reservoir is more than miscible flooding that maintains reservoir pressure and improves oil displacement. This method is associated with complex thermodynamic processes or phase transitions, such as the re-vaporization of heavy hydrocarbon ends and connate water, the reduction of the condensate/gas ratio and retrograde dew point (RDP) pressure, etc. In this paper, a laboratory study was conducted to estimate the effectiveness of the gas injection process during gas-condensate reservoir development. Specific laboratory equipment was constructed to conduct an experimental investigation by modelling the gas injection and reservoir depletion process.