Usan is a medium, sweet crude produced in the Nigeria
Production comes from the Usan oil field, in deep water off the coast of Nigeria. The field is operated by ExxonMobil, and is owned by ExxonMobil, CNOOC, Chevron, and Total
Crude is loaded from the Usan FPSO
Spot prices are reported by both Platts and Argus, for 950,000-1,000,000 bbl cargoes, FOB at the Usan FPSO. There is also an official formula price posted by NNPC