REAGENT FOR INCREASING OIL RECOVERY OF FORMATION POSSESSING ABILITY OF DESTROYING WATER-OIL EMULSION, INHIBITING CORROSION, AND ASPHALTENE-RESIN-PARAFFIN DEPOSITS, AND DESULFURIZATION OF OIL Russian patent published in 2004 - IPC
Abstract RU 2242595 C2
FIELD: oil and gas production.
SUBSTANCE: galactomannan is proposed as reagent possessing above-indicated properties.