Corrosion inhibitor deterioration reducer
In the chemical treating of wells, acidizing with hydrochloric acid comprises a substantial amount of such well-stimulation treatment. As hydrochloric acid has a deleterious effect on steel and other ferrous materials normally used in the well, it is customary to include an inhibitor in the hydrochloric acid to minimize the undersirable chemical action of the acid on the metal. A noncorrosive fluid composition for treating formations containing sulfides, consists essentially of an aqueous solution of hydrochloric acid, a corrosion-inhibiting amount of a hydrochloric acid-inhibiting agent subject to deterioration by sulfides, the sulfides being present in a sufficient amount to reduce the effectiveness of the inhibiting agent, and a corrosion inhibitor deterioration reducing agent having the formula of: ..pi..Equation/sup -/ wherein R is selected from the group consisting of alkyl group and aryl group, each group having from 2 to 10 carbon atoms. The corrosion-inhibitor deterioration reducing agent is present in a sufficient amount to reduce the deterioration effect of the sulfides on the inhibiting agent. (4 claims)
- Assignee:
- Halliburton Co.
- Patent Number(s):
- US 3567634
- OSTI ID:
- 5604032
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACIDIZATION
ADDITIVES
ALKANES
ALKENES
ALLOYS
AQUEOUS SOLUTIONS
AROMATICS
CHALCOGENIDES
CHEMICAL COMPOSITION
CORROSION INHIBITORS
CORROSIVE EFFECTS
CYLINDERS
DISPERSIONS
HYDROCARBONS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INACTIVATION
INORGANIC ACIDS
IRON ALLOYS
IRON BASE ALLOYS
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
PIPELINES
ROCKS
SOLUTIONS
STEELS
STIMULATION
SULFIDES
SULFUR COMPOUNDS
WELL COMPLETION
WELL STIMULATION
WELLS