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U.S. Department of Energy
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Selective steam foam soak oil recovery process

Patent ·
OSTI ID:6355988
In a steam soak oil recovery process in a heavy oil reservoir which is susceptible to gravity override, improved results are obtained by injecting the steam in the form of a steam-foam-forming mixture which has a chemical selectivity for being more mobile within the reservoir in contact with the reservoir oil than in the absence of that oil.
Assignee:
Shell Oil Co.
Patent Number(s):
US 4532993
OSTI ID:
6355988
Country of Publication:
United States
Language:
English