Corrosion inhibitor for well acidizing treatments

Patent · Tue Oct 06 04:00:00 EDT 1987

OSTI ID:5864786

Briggs, G L

This patent describes a treatment fluid useful for increasing the permeability of a subterranean formation in the vicinity of a borehole penetrating the formation, comprising: an aqueous solution of an acid selected from the group consisting of hydrochloric acid, hydrofluoric acid, formic acid, acetic acid, citric acid, and mixtures thereof. The acid is present in an amount effective to increase the permeability of the formation being treated; and an effective amount of a corrosion inhibiting composition which prevents the formation of sludge. The corrosion inhibiting composition comprising a mixture of: 80-90 weight percent propargyl alcohol; 5-10 weight percent 2 ethoxy ethanol; 0.5-3.0 weight percent polyethylene glycol.

• Assignee: Hughes Tool Co., Houston, TX
• Patent Number(s): US 4698168
• OSTI ID: 5864786
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACETIC ACID
ACIDIZATION
ALCOHOLS
ALDEHYDES
ALKYL RADICALS
AQUEOUS SOLUTIONS
AROMATICS
AZAARENES
AZINES
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
CITRIC ACID
CORROSION INHIBITORS
CORROSION PROTECTION
CORROSIVE EFFECTS
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
EPOXIDES
FLUIDS
FORMALDEHYDE
FORMIC ACID
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROCHLORIC ACID
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
HYDROXY ACIDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
MIXTURES
MOLECULAR WEIGHT
MONOCARBOXYLIC ACIDS
NATURAL GAS
NATURAL GAS WELLS
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PERMEABILITY
PETROLEUM
PHENOLS
POLYMERS
PROPARGYL RADICALS
PYRIDINES
QUINOLINES
RADICALS
RECOVERY
RESERVOIR ROCK
SOLUTIONS
STIMULATION
WELL STIMULATION
WELLS