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Carbon dioxide injection with in situ combustion process for heavy oils

Patent ·
OSTI ID:6632288
This patent describes a method of recovering hydrocarbons by injecting an oxygen-containing gas to form an in situ combustion front in an underground reservoir penetrated by at least one injection well and at least one production well. The improvement described here comprises: injecting about 25 MCF to about 117 MCF carbon dioxide per acre-foot of reservoir volume into the reservoir; and allowing the injected carbon dioxide to soak in the reservoir for about 2 to about 30 days prior the injection of an oxygen containing gas and ignition of the combustion front.
Assignee:
Texaco, Inc., White Plains, NY
Patent Number(s):
US 4649997
OSTI ID:
6632288
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE INJECTION
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
ELEMENTS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
IGNITION
IN-SITU COMBUSTION
IN-SITU PROCESSING
INJECTION WELLS
MISCIBLE-PHASE DISPLACEMENT
NONMETALS
OIL WELLS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PETROLEUM
PROCESSING
QUANTITY RATIO
RECOVERY
STIMULATION
THERMOCHEMICAL PROCESSES
VISCOSITY
VOLUME
WELL STIMULATION
WELLS