Immiscible oil recovery process

Patent · Tue Oct 21 04:00:00 EDT 1986

OSTI ID:5097333

Shu, W R

This patent describes a method for the recovery of oil from a subterranean, oil-bearing reservoir penetrated by an injection well and a production well extending from the surface of the earth into the reservoir. The method comprises: (i) injecting into the reservoir through the injection well, a mixture of an oil-displacing fluid. The fluid is essentially immiscible with the oil under the conditions prevailing in the reservoir. Up to 25 mole percent of a hydrocarbon additive thereby forms a mobile phase which substantially increases the limited solubility of the displacing fluid in the reservoir oil to reduce the viscosity of the reservoir oil; and (ii) producing fluids including oil from the production well.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4617996
• OSTI ID: 5097333
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
DISPERSIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
HYDROCARBONS
INJECTION WELLS
MIXTURES
OIL WELLS
OIL YIELDS
ORGANIC COMPOUNDS
PETROLEUM
QUANTITY RATIO
RECOVERY
RESERVOIR FLUIDS
SOLUBILITY
STIMULATION
VISCOSITY
WATERFLOODING
WELL STIMULATION
WELLS
YIELDS