Secondary recovery method

Patent · Tue Feb 20 04:00:00 EST 1968

OSTI ID:6080037

Bond, D C; Bernard, G G

In this secondary oil recovery method, a stable, tenacious foam is placed in the underlying water-bearing stratum. The foam acts as a barrier to prevent subsequently injected driving fluids, or fluids generated in situ (such as combustion gases and products), from entering the water- bearing stratum and thereafter channeling through the bottom-water layer or stratum to the output or production well, thus bypassing a major portion of the oil-bearing formation or stratum. The foam may be used in bank or slug form so that its movement through the reservoir or formation will be correlated with the movement of an oil bank formed in the upper, oil-bearing formation upon the initiation of the driving process. (19 claims)

• Assignee: Union Oil Co. California
• Patent Number(s): US 3369601
• OSTI ID: 6080037
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CHANNELING
CHEMICAL REACTIONS
COLLOIDS
COMBUSTION
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOAMS
FOSSIL FUELS
FUELS
IN-SITU COMBUSTION
IN-SITU PROCESSING
OIL WELLS
OXIDATION
PETROLEUM
PLUGGING
PROCESSING
RECOVERY
SATURATION
THERMAL RECOVERY
THERMOCHEMICAL PROCESSES
WATER SATURATION
WATERFLOODING
WELLS