Oil recovery by surfactant-alcohol waterflooding

Patent · Mon Dec 15 23:00:00 EST 1986

OSTI ID:6986229

Hurd, B G

This patent describes a method for the recovery of oil from a subterranean oil reservoir penetrated by spaced injection and production systems in which an aqueous fluid is introduced into the reservoir via the injection system to displace oil to the production system. The improvement described here comprises preceding the aqueous fluid introduction with an oil slug consisting of oil, a preferentially oil-soluble alcohol of limited water solubility having from 5 to 7 carbon atoms and a preferentially oil-soluble anionic surfactant is within the range of 0.2-1.0.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4629000
• OSTI ID: 6986229
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALCOHOLS
ALKALI METAL COMPOUNDS
ALKYL RADICALS
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
DISPERSIONS
ELEMENTS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
METHYL RADICALS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
NONMETALS
OIL WELLS
OIL YIELDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
QUANTITY RATIO
RADICALS
RECOVERY
SOLUBILITY
SOLUTIONS
STIMULATION
SURFACTANTS
WATER
WELL STIMULATION
WELLS
YIELDS