NEW DELHI/SINGAPORE: State refiner Indian Oil Corp (IOC) bought 5 million barrels of crude oil from West Africa and Middle East via a ‌tender this ⁠week, ⁠trade sources said on Friday.IOC ​purchased Angola's Kissanje and Nemba crude for ​delivery to its Paradip refinery, the sources said.The company also ​bought Nigeria's Usan ⁠crude from ‌ExxonMobil and Abu ​Dhabi's ​Murban crude from Mercuria ⁠for delivery to Vadinar.IOC also purchased ​Murban crude from Totsa, the ​trading arm of TotalEnergies, for delivery to Chennai, the people said.The West African cargoes traded at premiums of ‌around $4 a barrel to dated Brent, while Murban ​cargoes were ​sold ⁠at flat to a slight premium to dated Brent, they added.The companies ​typically do not comment on their commercial sales.