Oil recovery by in situ combustion

Patent · Wed Dec 01 04:00:00 EST 1965

OSTI ID:7057765

Santourian, M

This is a method for igniting a thick stratum over its entire thickness around an ignition well and moving the resulting combustion zone through the stratum toward 1 or more offset wells. The ignition well is tubed to a lower level of the stratum. A packer is set at an intermediate level of the stratum dividing it into an upper and lower level. The upper and lower levels of the stratum are ignited while at least 1 offset well is closed-in. Combustion-supporting gas is passed directly into the combustion zone at the selected level so as to expand the zone through the stratum to the other level by direct drive. Thereafter, a second combustion phase is conducted by passing gas to the annular combustion zone, from the ignition well to an offset well, so as to move the combustion zone, from the ignition well to an offset well, so as to move the combustion zone toward the offset well. Hydrocarbons produced by the second phase combustion are recovered from one of the wells. (10 claims)

• Assignee: TUL; EDB-81-025476
• Patent Number(s): US 3165154
• OSTI ID: 7057765
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION WAVES
ENERGY SOURCES
ENGINEERING
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
GAS INJECTION
IGNITION
IN-SITU COMBUSTION
IN-SITU PROCESSING
INJECTION WELLS
OIL WELLS
OXIDATION
PETROLEUM
PROCESSING
RECOVERY
RESERVOIR ENGINEERING
RESERVOIR FLUIDS
RESERVOIR ROCK
STIMULATION
THERMOCHEMICAL PROCESSES
WELL STIMULATION
WELLS