Emulsion 05 : A mixture of crude oil and formation water. Generally requires time and heat, chemicals (called DEMULSIFIERS or EMULSION BREAKERS) or electricity to separate the water form the oil. (ITOGP)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}