Wells – Processes – In situ combustion
Patent
1984-12-24
1987-03-17
Suchfield, George A.
Wells
Processes
In situ combustion
166263, E21B 43243
Patent
active
046499970
ABSTRACT:
The invention process is a method of conducting in situ combustion in heavy oil or tar sand reservoirs wherein carbon dioxide is injected into the formation prior to, during, or prior to and during in situ combustion. The carbon dioxide may be injected concurrently with the injection of the oxygen-containing gas or the oxygen-containing gas and carbon dioxide may be injected in alternate slugs. The injection of carbon dioxide aids in situ combustion by lowering the viscosity of the oil, creating channels in the heavy oil deposits for the passage of the oxygen-containing gas and increasing the mobility of oil ahead of the combustion front.
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Delhommer Harold J.
Park Jack H.
Priem Kenneth R.
Suchfield George A.
Texaco Inc.
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