Spray dried emulsifier compositions, methods for their preparation, and their use in oil-based drilling fluid compositions

摘要

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.

主权项

1. A method for preparing a spray dried emulsifier, comprising:
spray drying a neutralized composition to produce a spray dried emulsifier, wherein the neutralized composition comprises a mixture of a carboxylic acid terminated fatty amine condensate, a modified tall oil, and water and has a pH of about 8 to about 11.5, and wherein the carboxylic acid terminated fatty amine condensate is prepared by reacting a fatty acid amine condensate with a polycarboxylic acid or a carboxylic acid anhydride.