FORMULATION OF SURFACTANT TO ENHANCE CRUDE OIL RECOVERY
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United States of America Patent
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Issued Date -
Jul 2, 2015
app pub date -
Nov 26, 2014
filing date -
Dec 2, 2013
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Abstract
A method for improving recovery from an oil-bearing subterranean formation includes the steps of: injecting a surfactant solution into the subterranean formation, wherein the surfactant solution comprises a mixture of fatty acids and salts of the fatty acids with a mild base, whereby oil-water interfacial tension in the formation is reduced; and producing fluids from the formation.
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