Oil recovery process by micible displacement

Patent · Mon Sep 20 04:00:00 EDT 1971

OSTI ID:5464422

Ayers, Jr, R C

In a process for the recovery of oil from a subterranean formation using as a first bank a polar organic solvent and as a second bank an aqueous surfactant solution, an organic additive is added to the surfactant solution. The organic additive decreases the density of the surfactant solution and reduces the tendency of the second bank to underride the first bank. The organic additive also decreases the amount of surfactant which must be employed in the second bank to cause the second bank to miscibly displace the first bank and to be miscibly displaced by the following flood water. The organic additive must be highly soluble in both the polar organic solvent and water. The density of the organic additive should be approx. that of water or less. (5 claims)

• Assignee: Esso Production Res Co.
• Patent Number(s): US 3605891
• OSTI ID: 5464422
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
AQUEOUS SOLUTIONS
DENSITY
DISPERSIONS
ENERGY SOURCES
ENGINEERING
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
GEOLOGIC FORMATIONS
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
MOLECULAR WEIGHT
OIL WELLS
ORGANIC COMPOUNDS
PETROLEUM
PHYSICAL PROPERTIES
RECOVERY
RESERVOIR ENGINEERING
SOLUBILITY
SOLUTIONS
SOLVENTS
SURFACTANTS
VOLUME
WELLS