CO2 STORAGE IN ORGANIC-RICH ROCK FORMATION WITH HYDROCARBON RECOVERY

摘要

A method for producing hydrocarbons from and/or storing C02 in an organic-rich rock formation. One embodiment of the method includes the steps of injecting the C02 into an injection well in the organic-rich rock formation and producing the hydrocarbons from a production well when a drainage volume of the production well has an average reservoir pressure equal to or less than a predetermined pressure. The hydrocarbons substantially include natural gas and the injection well is in fluid communication with the production well. The embodiment also includes capping the production well and feeding the C02 into the injection well when the produced hydrocarbons include a C02 mole fraction greater than or equal to a predetermined mole fraction.