Method of acidizing and introducing a corrosion inhibitor into a hydrocarbon producing formation

Patent · Mon Jan 25 23:00:00 EST 1965

OSTI ID:6683685

Graham, J W; Kerver, J K; Morgan, III, F A

This is an improved method for treating subsurface formations and improving both the effectiveness of the acidization technique and the corrosion inhibitor squeeze technique. A large quantity of highly viscous fluid, such as viscous crude oil, is injected into the formation to be treated. This injection is then followed by an injection of a low viscosity acid, in the case of acidization, or a low viscosity inhibitor solution, in the case of acidization, or a low viscosity inhibitor solution, in the case of corrosion inhibitor squeeze. The low viscosity fluid fingers through the higher viscosity fluid to form radial channels in the region permeated by the higher viscosity fluid. Gas may be injected between the placement of the high and low viscosity fluids to enhance the formation of fingers by the lower viscosity fluid. (6 claims)

• Assignee: TUL; EDB-81-025628
• Patent Number(s): US 3167123
• OSTI ID: 6683685
• Country of Publication: United States
• Language: English

Related Subjects

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Plowshare-- (-1989)
ACIDIZATION
CHEMICAL REACTIONS
CORROSION
CORROSION INHIBITORS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC DEPOSITS
MINERAL RESOURCES
NATURAL GAS
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NATURAL GAS WELLS
OIL FIELDS
OIL WELLS
PETROLEUM
PETROLEUM DEPOSITS
PIPES
RECOVERY
RESOURCES
VISCOSITY
WELLS