Removing resin coatings from wellbore surfaces

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United States of America Patent

PATENT NO 9944890
SERIAL NO

15028137

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Abstract

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Methods and compositions are provided for removing a residue of resin from the surface of equipment. In one embodiment, the methods comprise: providing a cleaning solution comprising a pH-adjusting agent, a chemical solvent, and water, wherein the chemical solvent is selected from the group consisting of β-lactam, γ-lactam, δ-lactam, ϵ-lactam, 2-pyrrolidone, N-methylpyrrolidone, 1,3-dimethyl-2-imidazolidinone (DMI), caprolactam, cyclohexanone, cyclopentanone, β-butyrolactone, γ-butyrolactone, δ-decalactone, γ-valerolactone, ϵ-caprolactone, butylene carbonate, propylene carbonate, and ethylene carbonate, any combination thereof, and any derivative thereof; allowing the cleaning solution to contact a surface at least partially coated with a layer of resin; and allowing the cleaning solution to at least partially dissolve the resin.

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Patent Owner(s)

Patent OwnerAddress
HALLIBURTON ENERGY SERVICES INC3000 N SAM HOUSTON PARKWAY E HOUSTON TX 77032-3219

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nguyen, Philip Houston, US 12 256
Vo, Loan K Houston, US 68 355

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