1. n. [Drilling Fluids]
A group of organic chemicals with the general formula RCO–NH2 formed from reactions of ammonia (NH3) and a carboxylic acid, RCOO–H+. "R" groups range from hydrogen to various linear and ring structures. Amides and polyamides are emulsifiers and surfactants, many of which are made from fatty acids.
See: amines, bland coring fluid, emulsion, fatty acid, oil-mud emulsifier, surfactant
