HYDROCARBON RECOVERY USING COMPLEX WATER AND CARBON DIOXIDE EMULSIONS

摘要

In one aspect, a method of recovering hydrocarbons from a subterranean zone includes flowing carbon dioxide in a first state into the subterranean zone including hydrocarbons, wherein a density of the carbon dioxide in the first state is greater than a density of carbon dioxide in a gaseous state, and recovering at least a portion of the hydrocarbons in the subterranean zone in response to flowing carbon dioxide in the first state into the subterranean zone.

主权项

1. A secondary or tertiary hydrocarbon recovery method comprising:
flowing a complex emulsion into the subterranean zone, the complex emulsion comprising an internal fluid-in-gas emulsion configured to increase a density and a viscosity of a gas in the internal fluid-in-gas emulsion emulsifying a fluid in the internal fluid-in-gas emulsion, the complex emulsion comprising an external fluid emulsifying the internal fluid-in-gas emulsion, the external fluid configured to carry corrosion inhibitors into the subterranean zone; and recovering at least a portion of hydrocarbons in the subterranean zone using the complex emulsion flowed into the subterranean zone.