BIODEGRADABLE NON-ACIDIC OIL-IN-WATER NANOEMULSION

摘要

Formulation for a natural product as a replacement for the use of traditional acidic chemical stimulation methods for the emulsification, removal and release of paraffin and asphaltenes from low producing or pumped off wells and reservoirs with the use of traditional methodologies. Also a method of use of formulation for stimulating an oil well consisting of introducing into the wellbore a biodegradable, non-reactive fluid system containing a water-miscible fatty acid solvent, a solution of fatty acids, an amino alcohol, and at least one non-ionic surfactant. The fluid system may be further in the form of a nanoemulsion that is formed by combining a colloidal solution with one or more emulsifiers, an alcohol, and water. The fluid system may be used in well remediation and stimulation as well as additional, alternative applications such as the cleaning of surface and/or downhole equipment.

主权项

1. A biodegradable, non-acidic, oil-in-water nanoemulsion comprising
(a) A micellar solution of fatty acids; (b) a water-soluble organic solvent, wherein the water soluble organic solvent is an alcohol; (c) an emulsifier; (d) at least one non-ionic surfactant and (e) water; (f) wherein the nanoemulsion has an average droplet size from about 5 nm to about 50 nm in diameter, and (g) wherein the nanoemulsion disperses and removes paraffin, asphaltenes deposits, sulfur, pipe dope and hydrocarbons.