What is a dirty water dog?

Dirty water dog is a term used in oilfield services to describe a chemical compound that is applied to the surface of drilling mud to remove contaminants and prevent the formation of scale. It is typically composed of a mixture of detergents, surfactants, and other chemicals that help to break down and dissolve solids, such as clay, silt, and sand. Dirty water dogs are also known as mud conditioners or mud cleaners, and they are essential for maintaining the quality and performance of drilling mud.