SURFACTANT ENHANCED INJECTIVITY OF XANTHAN MOBILITY CONTROL SOLUTIONS FOR TERTIARY OIL RECOVERY

摘要

SURFACTANT ENHANCED INJECTIVITY OF XANTHAN MOBILITYCONTROL SOLUTIONS FOR TERTIARY OIL RECOVERYAbstractAn aqueous mobility control solution for tertiaryoil recovery from saline oil fields comprises fromabout 200 to 2000 ppm xanthan biopolymer in the form ofclean, unreconstituted fermentation broth and fromabout 20 to 200 ppm of a selected water soluble poly-glycol-based surfactant. A process for tertiary oilrecovery which comprises the injection of the mobilitycontrol solution into saline oil-bearing subterranianformations is also disclosed.