Process for increasing oil recovery by miscible displacement

Patent · Tue Aug 02 04:00:00 EDT 1966

OSTI ID:6760374

Kiel, O M; Malinowsky, C F

This is a miscible displacement method which involves a linear, gas-driven gravity-controlled flow mechanism. The formation is fractured and a condensible gas is injected into the fracture which has a substantial degree of miscibility with the reservoir oil. Thereafter a relatively non-condensible gas is injected through the fracture and into the reservoir. The volume of the non-condensible gas is sufficient to raise the reservoir pressure at least 50 psi above the vapor pressure of the condensible gas. Injection of the non-condensible gas is then stopped and oil is produced through the fracture with a controlled back pressure to offset the tendency of the miscible liquid to finger through the reservoir oil. (7 claims)

• Assignee: Esso Production Res Co.
• Patent Number(s): US 3263751
• OSTI ID: 6760374
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKANES
COMMINUTION
ENERGY SOURCES
ENGINEERING
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FRACTURING
FUELS
GAS INJECTION
HYDROCARBONS
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
ORGANIC COMPOUNDS
PETROLEUM
PHYSICAL PROPERTIES
RECOVERY
RESERVOIR ENGINEERING
STIMULATION
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE
WELL STIMULATION
WELLS