Sour Crude Oil (Sour Crude) : An oil containing free sulphur or other sulphur compounds whose total sulphur content is in excess of one percent. (ITOGP)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}