Composition and method for corrosion inhibition utilizing an epoxy resin, an amine curing agent, and alcohol and optionally a hydrocarbon diluent

Patent · Tue Jan 07 04:00:00 EST 1992

OSTI ID:5539501

Wu, Y

This patent describes a method for treating metal surfaces of drilling equipment in a well for the recovery of natural fluids from a subterranean reservoir. It comprises an epoxy resin having more than one vicinal epoxide group per molecule; an N-tallow-1,3 diaminopropane curing agent for the epoxy resin, the curing agent and epoxy being present in an equivalent ratio of from about 1.5:1 to about 5:1; a hydrocarbon diluent present in an amount to maintain the composition in an essentially fluid state; and an alcohol selected from the group consisting of ethanol, 1-propanol, 2-proponal, n-butanol, n-pentanol, n-hexanol, n-heptanol, and combinations of any two or more thereof, present in an amount of about 10 to about 60 weight percent, based on the weight of the composition, into the well and allowing the composition to contact the metal surfaces for a time sufficient to form a corrosion-inhibiting film thereon.

• Assignee: Phillips Petroleum Co., Bartlesville, OK (United States)
• Patent Number(s): A; US 5079041
• Application Number: PPN: US 7-657237
• OSTI ID: 5539501
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040300* -- Oil Shales & Tar Sands-- Drilling
Fracturing & Mining
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALCOHOLS
AMINES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CORROSION
DILUTION
DRILLING EQUIPMENT
DRILLS
EARTH PENETRATORS
ELEMENTS
EPOXIDES
EQUIPMENT
FLUID INJECTION
HYDROCARBONS
HYDROXY COMPOUNDS
INHIBITION
INJECTION
INTAKE
METALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PENETRATORS
SUBTERRENE PENETRATORS
SURFACES