SINGAPORE/NEW DELHI: Indian state refiners Indian Oil Corp and Hindustan Petroleum Corp have together purchased about 7 million barrels of crude oil through ‌tenders ⁠last ⁠week, trade sources said on Monday.Prices ​for the deals were not immediately available.IOC bought about 1 million barrels of Angola's Kissanje crude from Cathay Petroleum, the ⁠sources said. ‌It also purchased 2 million barrels of Nigeria's Agbami ⁠and Usan crude from Trafigura, and a further 2 million barrels of Angola's Nemba and Dalia crude from Chevron.Also read: Iran exploring oil sales to Japan, buyers seek longer sanctions waiver, sources sayThe cargoes are scheduled for delivery between late August and early ‌September.Separately, HPCL bought 2 million barrels of Brazil's ​Tupi crude, ​the sources ⁠said. The cargoes are scheduled for delivery in August and September.The companies ​typically do not comment on their commercial sales.