Spray dried emulsifier compositions, methods for their preparation, and their use in oil-based drilling fluid compositions
AssigneeGeorgia-Pacific Chemicals LLC
InventorsPhillip W. Hurd, Gary D. Fultz, Jalandar Jadhav
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Abstract
Spray dried emulsifier compositions are described, which have desirable emulsifying and wetting characteristics. Among other advantages, the solid particulate emulsifier compositions greatly reduce transportation costs and simplify the logistics and environmental concerns associated with shipping large volumes of solvent-containing liquids. The emulsifier comprises (1) a carboxylic acid terminated fatty amine condensate or (2) a modified tall oil or (3) a blend of (1) and (2) that is converted to its alkali or alkaline earth metal salt and spray dried.
Claims20
A spray dried emulsifier comprising an alkali metal salt or an alkaline earth metal salt of a carboxylic acid terminated fatty amine condensate, wherein the carboxylic acid terminated fatty amine condensate comprises a reaction product of a fatty acid amine condensate and (1) a polycarboxylic acid, (2) a carboxylic acid anhydride, or (3) a polycarboxylic acid and a carboxylic acid anhydride.
A method for making a spray dried emulsifier, comprising:
- neutralizing an emulsifier comprising a carboxylic acid terminated fatty amine condensate to produce a neutralized emulsifier comprising an alkali metal salt or an alkaline earth metal salt of the carboxylic acid terminated fatty amine condensate, wherein the carboxylic acid terminated fatty amine condensate comprises a reaction product of a fatty acid amine condensate and (1) a polycarboxylic acid, (2) a carboxylic acid anhydride, or (3) a polycarboxylic acid and a carboxylic acid anhydride;
- and
- spray drying the neutralized emulsifier to produce a spray dried emulsifier comprising the alkali metal salt or the alkaline earth metal salt of the carboxylic acid terminated fatty amine condensate.
A method for making an invert emulsion drilling fluid, comprising:
- combining an oil component, a water component, and a spray dried emulsifier to produce an invert emulsion, wherein the spray dried emulsifier comprises an alkali metal salt or an alkaline earth metal salt of a carboxylic acid terminated fatty amine condensate, and wherein the carboxylic acid terminated fatty amine condensate comprises a reaction product of a fatty acid amine condensate and (1) a polycarboxylic acid, (2) a carboxylic acid anhydride, or (3) a polycarboxylic acid and a carboxylic acid anhydride.
Dependencies are inferred from the claim text.