Enhanced Natural Gas and Condensate Recovery by Carbon Dioxide and Methane Flooding

摘要

The authors quantitatively investigates the recovery efficiency, pattern behavior, and relative permeability of (a) condensate following supercritical carbon dioxide (CO2) injection, methane (CH4) injection, and the injection of their mixtures;;and (b) natural gas of various compositions following pure supercritical CO2 injection. A high-pressure high-temperature experimental laboratory was established to simulate reservoir conditions and to perform relative permeability measurements on sandstone cores. This work is part of an integrated enhanced natural gas and condensate recovery project conducted for a local reservoir in Western Australia. This data will help the operators develop operational and design strategies for their present and future EOR projects.