Method for removal of asphaltene depositions with amine-activated disulfide oil
AssigneeStandard Oil Company (Indiana)
InventorShelby P. Sharp
Life of this patent
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Abstract
A method for treating and removing unwanted asphaltene deposits from oil and gas wells, surface equipment, flow lines, and pore spaces of oil-baring formations comprises treatment with an amine-activated aliphatic disulfide oil as an asphaltene solvent. In a preferred aspect, the aliphatic disulfide oil is a dialkyl disulfide oil and is activated by the addition of 10 weight percent of diethylamine. In a specific use, the activated disulfide oil is used to remove asphaltene deposits from an oil-bearing formation and a producing well penetrating the formation.
Claims15
A method for treating an asphaltene deposit comprising contacting the asphaltene deposit with an amine-activated dialkyl disulfide oil.
A method for treating an asphaltene deposit in an oil-bearing formation and a producing well penetrating said formation comprising contacting the asphaltene deposit with an amine-activated dialkyl disulfide oil.
A method for treating an asphaltene deposit comprising contacting the asphaltene deposit with an amine-activated dialkyl disulfide oil in an amount effective for removal of at least a portion of the asphaltene deposit.
A method for treating asphaltene deposits in an oil-bearing formation comprising:
- (a) injecting an amine-activated dialkyl disulfide oil into a well penetrating said formation;
- (b) displacing said amine-activated dialkyl disulfide oil into said formation;
- (c) shutting said well in for a time period;
- and
- (d) returning said well to production.
Dependencies are inferred from the claim text.