Experimental and numerical study of huff-n-puff gas injection to re-vaporize liquid dropout in shale gas condensate reservoirs

摘要

The complex flow behavior of a gas condensate reservoir is caused by the compositional changes and the creation of condensate blockage around the wellbore. Once the pressure is lower than the dew point pressure, liquid dropout is formed in the reservoir. This liquid dropout reduces gas relative permeability. As a consequence, gas production is decreased and liquid dropout-condensate, a valuable resource, remains in the reservoir.