Erha is  a medium, sweet crude grade produced in Nigeria

Production comes from the Erha oil field, in deep water off the coast of Nigeria.  The field is operated by ExxonMobil, and is owned by ExxonMobil and Shell

Crude is loaded from the Erha FPSO

Spot prices are reported by both Platts and Argus, for 950,000-1,000,000 bbl cargoes, FOB at the Erha FPSO. There is also an official formula price posted by NNPC