BSW
BS&W is a very commonly used acronym in oil & gas industry. It stands for Basic Sediments and Water. When reservoir fluid flows to surface, the flow of reservoir fluid includes water and suspended particles of impurities like dirt, sand, paraffin, scale, rust etc. BS&W varies greatly from field to field. Water and suspended particles are separate from reservoir fluid before taking measurement during well testing and prior to transporting hydrocarbons to production facilities.