Metallic soaps of modified fatty acids and rosin acids and methods of making and using same
AssigneeHalliburton Energy Services, Inc.
InventorJeffrey J. Miller
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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.
Claims29
A process for preparing a metallic soap additive for a drilling fluid, said process comprising:
- providing a blend of an acid terminated polyamide and a mixture produced by the Diels-Alder reaction of dienophiles with a mixture of modified fatty acids and resin acids;
- reacting said blend with a metal oxide or metal hydroxide;
- and recovering the solid reaction product of said mixture.
A method for preparing a metallic soap additive for a drilling fluid, said method comprising saponifying a blend of a polyamide and a mixture produced by the Diels-Alder reaction of dienophiles with a material selected from the group consisting of fatty acids, resin acids, and mixtures thereof, by a dry process employing a source of metal cations.
A drilling fluid additive comprising a metallic soap prepared by the process comprising:
- (a) blending an acid terminated polyamide and a mixture produced by the Diels-Alder reaction of dienophiles with acids selected from the group consisting of fatty acids, modified fatty acid, resin acids, and mixtures thereof;
- (b) adding to said blend a source of metal cations selected from the group of materials consisting of metal oxides, metal hydroxides, and mixtures thereof;
- (c) allowing said blend to react with said metal cations;
- and
- (d) recovering the solid reaction product.
A method for preparing a metallic soap additive for a drilling fluid, said method comprising saponifying a mixture produced by the Diels-Alder reaction of dienophiles with a material selected from the group consisting of fatty acids, resin acids, and mixtures thereof, by a dry process employing a source of metal cations.
Dependencies are inferred from the claim text.