Solvent systems having a high flash point and methods of use thereof
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United States of America Patent
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May 26, 2020
Grant Date -
Jun 15, 2017
app pub date -
Dec 1, 2016
filing date -
Dec 11, 2015
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Abstract
A method and composition of treating an oil or gas well having a wellbore, well casing, production equipment or recovery equipment. The method involves introducing into the wellbore, well casing, production equipment or recovery equipment a high flash point solvent blend. The blend includes at least one C1-C4 ester of a C16-C20 fatty acid component, at least one terpene hydrocarbon component (e.g., a pure gum turpentine, an oil of turpentine, or mixture thereof), and optionally at least one emulsifier component. The weight percent ratio of the at least one C1-C4 ester of a C16-C20 fatty acid component to the at least one terpene hydrocarbon component is from about 60:40 weight percent to about 95:5 weight percent, based on the total weight of the blend. The blend has a flash point greater than about 140° F. The blend may be biodegradable, and has no ozone depleting compounds, no hazardous air pollutants, and no carcinogens.
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