Method for recovering hydrocarbons

Patent · Tue Nov 28 04:00:00 EST 1978

OSTI ID:6540785

Allen, J C

A two-step method is described for recovering hydrocarbons from a subterranean formation in which in situ combustion is first initiated in the formation by injection of air. For example, through an injection well, the injection of air is terminated and in a final step a combustion-supporting gas such as air, air mixed with oxygen, etc., and a combustible gas such as hydrogen, carbon monoxide and mixtures thereof are introduced into the formation preferably through separate sets of casing perforations; and finally hydrocarbons are recovered via a production well.

• Assignee: Texaco Inc.
• Patent Number(s): US 4127171
• OSTI ID: 6540785
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AIR
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
CRYOGENIC FLUIDS
DISPERSIONS
ELEMENTS
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
GAS INJECTION
GASES
GEOLOGIC DEPOSITS
HYDROGEN
IN-SITU COMBUSTION
IN-SITU PROCESSING
MIXTURES
NONMETALS
OIL WELLS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PETROLEUM DEPOSITS
PROCESSING
RESOURCES
THERMOCHEMICAL PROCESSES
WELLS