Reuters
Chevron said in January it had begun a $48 billion expansion of Tengiz, which is one of the world's deepest and most complex fields due to high sulphur levels and harsh weather conditions. Clay Neff, Chevron's head of international exploration and production, told Reuters last month that the Tengiz expansion was expected to reach full capacity of 260,000 barrels per day (bpd) by June, lifting its overall production to around 1 million barrels of oil equivalent per day. Chevron's spokesperson said on Friday that Tengizchevroil (TCO) has safely started initial production from the Future Growth Project (FGP).