A highly soluble salt which imparts special properties to drilling fluids, but primarily to increase the density of the fluids and to accelerate the hydration reaction of cement and water. See: Accelerator. (Bul 10C)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}