Trader, Vitol was said to have bought the Sep 23-24 loading Doba cargo, at around Dated Brent -200/-180 cts/bbl, sources added, according to Platts. The tender closed on Aug 5 at 0900 hours Malaysian time (0100 GMT), with validity till Aug 7, 1200 GMT. Doba is a heavy sweet crude with an API of 20.9 degrees and 0.09% sulfur, with a product yield of naphtha 0.72%, kerosene 4.31%, gas oil 14.31% and residual oil 80.97%, making it akin to Indonesia's Duri crude. The Doba project is operated by ExxonMobil (40%), Petronas (35%) and ChevronTexaco (25%). From initial production rates of 50,000 b/d, Doba production is expected to increase to 225,000