Recovery of waterflood residual oil
Patent
·
OSTI ID:6896227
This is a method of recovering additional oil from a reservoir that has been depleted both by primary production and then by waterflooding. A bank of solvent is injected into the reservoir through an injection well. The solvent is followed with the injection of a scavenging and propelling fluid. Oil is withdrawn from the production wells. The solvent consists of a blend of liquid propane and a highly viscous distillate oil. The distillate oil has a true boiling range between 680-1,250$F and a viscosity of 200-6,000 cp at 100$F. The blend consists of 60-90% propane by volume, and the scavenging fluid can be water. (7 claims)
- Assignee:
- TUL; EDB-81-043534
- Patent Number(s):
- US 3240272
- OSTI ID:
- 6896227
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKANES
BOILING POINTS
ENERGY SOURCES
ENGINEERING
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUEL OILS
FUELS
HEATING OILS
HYDROCARBONS
INJECTION WELLS
LIQUID FUELS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PROPANE
RECOVERY
RESERVOIR ENGINEERING
STIMULATION
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VISCOSITY
WELL STIMULATION
WELLS
020300* -- Petroleum-- Drilling & Production
ALKANES
BOILING POINTS
ENERGY SOURCES
ENGINEERING
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUEL OILS
FUELS
HEATING OILS
HYDROCARBONS
INJECTION WELLS
LIQUID FUELS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PROPANE
RECOVERY
RESERVOIR ENGINEERING
STIMULATION
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VISCOSITY
WELL STIMULATION
WELLS