DOWNHOLE FLUID INJECTIONS, CO2 SEQUESTRATION METHODS, AND HYDROCARBON MATERIAL RECOVERY METHODS

摘要

Downhole fluid injection systems are disclosure that can include a fi rst well extending into a geological formation, and a fluid injector assembly located withi n the well. The fluid i njector assembly can be configured to inject a liquid CO₂/H₂O-emulsion into the surrounding geological formation. CO₂ sequestration methods are provided that can include exposing a geological formation to a liquid CO₂/H₂O- emulsion to sequester at least a portion of the CO₂ from the emulsion withi n the formation. Hydrocarbon material recovery methods are provided that can include exposing a liquid CO₂/H₂O emulsion to a geological formation having the hydrocarbon material therein. The methods can include recovering at least a portion of the hydrocarbon material from the formation.