Stock-Tank Oil : The hydrocarbon liquid (oil or condensate) which is collected in a surface storage tank at atmospheric pressure after the produced well fluid has been processed through a gas-oil separation system. (RP 44)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}