Method of recovering petroleum from a subterranean reservoir incorporating resinous polyalkylene oxide adducts

Patent · Tue Apr 07 04:00:00 EST 1981

OSTI ID:6160933

Blair, C M

The method of recovering petroleum from a subterranean reservoir preferably comprising the steps of: (1) introducing through an injection well a predeterminable amount of a polyalkylene oxide adduct of a fusible, water-insoluble organic aromatic hydrocarbon solvent-soluble synthetic resin, wherein said resin has from between about 4 to about 15 phenolic groups and is an alkyl or cycloaliphatic substituted phenol-aldehyde condensate of an ortho - or para-substituted phenol and an aldehyde, said condensate resin being thereafter further condensed with an alkylene oxide containing less than about five carbon atoms in an amount equal to at least one mole of alkylene oxide per phenolic moiety of said resin, said condensation product at about 25* C.: (A) being less than about 1% by volume soluble in water and in isooctane; (B) having a solubility parameter in the range of between about 9 and about 8.5; and (C) spreading at the interface betwe distilled water and refined mineral oil to form a film having a thickness no greater than about 20 angstroms at a film pressure of about 16 dynes per cm, the weight ratio of oxide to condensation product in a solvent-free state being between about 1-to-10 and about 10-to-1; (2) contacting said petroleum in sai reservoir with an effective thin film forming amount of said polyalkylene oxide adduct; (3) and introducing into the formation an aqueous injection medium to urge said petroleum toward and through a producing well.

• Assignee: Magna Corp
• Patent Number(s): US 4260019
• OSTI ID: 6160933
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDUCTS
ENHANCED RECOVERY
FLUID INJECTION
INJECTION WELLS
INTERFACES
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
POLYOLEFINS
RECOVERY
RESINS
WELLS
WETTABILITY