Improved water-driven lpg slug process

Conference · Sat Jan 01 04:00:00 EST 1966

OSTI ID:6524198

Thompson, J L

The economics of oil recovery by the LPG-slug process depends upon increasing the sweep efficiency and recovering the injected LPG. There are 2 basic forms of the LPG-slug processes--the gas-driven and the water-driven. The pressure required for miscibility between dry gas and LPG prohibits the use of the gas-driven LPG process in shallow reservoirs. The water-driven LPG slug process normally exhibits good sweep efficiency. However, displacement of the LPG by water is poor. An improvement in this process appears possible by injecting a slug of carbon dioxide between the LPG slug and the water drive. Laboratory experiments were conducted in linear core systems to determine the effect of pressure on the various displacement zones. A displacement test was conducted with LPG and carbon dioxide slugs large enough to avoid interference between the oil-LPG, LPG-carbon dioxide and carbon dioxide- water displacement zones. Under these conditions, essentially complete oil and LPG recovery was obtained. However, a substantial amount of carbon dioxide was left in the core at water breakthrough.

• OSTI ID: 6524198
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
EFFICIENCY
ENERGY SOURCES
EVALUATION
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
GAS INJECTION
LIQUEFIED PETROLEUM GASES
LIQUIDS
MISCIBLE-PHASE DISPLACEMENT
NATURAL GAS LIQUIDS
OIL WELLS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
RECOVERY
TESTING
WATERFLOODING
WELLS