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STEAM ASSISTED GRAVITY DRAINAGE WITH ADDED OXYGEN ('SAGDOX') IN DEEP RESERVOIRS
STEAM ASSISTED GRAVITY DRAINAGE WITH ADDED OXYGEN ('SAGDOX') IN DEEP RESERVOIRS
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机译:深层储层中蒸汽辅助重力排水(“ SAGDOX”)
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摘要
A process to recover hydrocarbons, from a hydrocarbon reservoir having a bottom, using a substantially horizontal production well, the substantially horizontal production well having a toe and a heel, the process including:(a) injecting oxygen into the hydrocarbon reservoir, the horizontal production well having at least one perforation zone for contact with the reservoir;(b) injecting steam into the hydrocarbon reservoir; the oxygen producing in situ heat and in situ carbon dioxide by combustion and the steam producing in situ heat by conduction and condensation; the in situ carbon dioxide dissolving into the liquid hydrocarbon, lowering its viscosity;(c) recovering the reservoir liquid hydrocarbons of lowered viscosity using the substantially horizontal production well; and(d) optionally conveying the recovered liquid hydrocarbons to the surface; where the process is absent a removal step of any non-condensable gas from the reservoir.展开▼