Method of well stimulation

Patent · Tue Jun 06 04:00:00 EDT 1972

OSTI ID:6048550

Milton, Jr, H W

Crude oil production from a producing means in fluid communication with an oil-bearing subterranean reservoir is improved by injecting into the formation about 0.1 to 10 bbl of a micellar dispersion per vertical foot of oil-bearing sand and then injecting a sufficient volume of hydrocarbon solution containing an oil-wetting agent, e.g., high molecular amines, substituted-ammonium compounds, etc., into the formation to displace the micellar dispersion radially out into the reservoir and to wet the reservoir rock with the hydrocarbon solution to a distance of about 3 to 20 ft, and thereafter returning the well to production. Such a process, inter alia, improves the relative permeability to the flow of crude oil and establishes an oleophilic character in the reservoir immediately adjacent to the wellbore, the overall effect being to improve the productivity index. (15 claims)

• Assignee: Marathon Oil Co.
• Patent Number(s): US 3667548
• OSTI ID: 6048550
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
COLLOIDS
DISPERSIONS
EMULSIONS
ENHANCED RECOVERY
FLUID INJECTION
GEOLOGIC DEPOSITS
MICELLAR SYSTEMS
MICROEMULSIONS
MINERAL RESOURCES
OIL WELLS
PERMEABILITY
PETROLEUM DEPOSITS
RECOVERY
RESERVOIR ROCK
RESOURCES
SAND
STIMULATION
SURFACTANTS
WELL STIMULATION
WELLS
WETTING AGENTS