Wells – Processes – Distinct – separate injection and producing wells
Patent
1990-06-04
1991-07-16
Suchfield, George A.
Wells
Processes
Distinct, separate injection and producing wells
166303, 252 8554, E21B 4322, E21B 4324
Patent
active
050316982
ABSTRACT:
An improved process for recovering oil by flowing a mixture of steam and steam foam surfactant into an oil-containing subterranean reservoir, the improvement provided by using surfactants enriched in olefin disulfonate. The surfactants may be used in either a steam drive or a steam soak process. Disulfonate-enriched steam foam surfactants and mixtures are also described.
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Borchardt John K.
Lau Hon C.
Shell Oil Company
Suchfield George A.
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