Metallic soaps of modified fatty acids and rosin acids and methods of making and using same
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United States of America Patent
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Oct 7, 2008
Grant Date -
Nov 8, 2007
app pub date -
Jul 17, 2007
filing date -
Oct 31, 2001
priority date (Note) -
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Abstract
A superior powder form of a metallic soap for enhancing the properties of an invert emulsion drilling fluid may be prepared by a dry process saponification reaction. The process includes mixing a source of metal cations with the product of a Diels-Alder reaction of dienophiles with fatty acids and/or resin acids and allowing the mixture to react. Heating the mixture increases the rate of reaction. The solid product is ground to form a powder. The properties of the drilling fluid that may be improved by adding the soap include filtration control, fluid loss control, emulsification and emulsion stability, and electrical stability.
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