| abstract |
A method of recovering hydrocarbons from a hydrocarbon-bearing subterranean formation with a matrix permeability of less than 1 mD is disclosed. The method includes injecting a volume of a first fluid having a viscosity lower than the viscosity of water into an injection well present in the formation; separately injecting a volume of a second fluid into the formation before, after, or before and after injecting the first fluid; and producing at least a fraction of the injected volume of the first fluid and hydrocarbons from the formation through a production well present in the formation. |