Supermajor Chevron posted first quarter 2013 income of $6.18 billion, or $3.18 per share, down from $6.47 billion, or $3.27 per share, in the first quarter last year.
Global oil and gas production was up slightly to 2.65 million barrels per day from 2.63 bpd a year earlier, but weaker prices and downstream work fuelled the dip in earnings.
Production increases from project ramp-ups in the US and Nigeria were largely offset by normal field declines, Chevron said.
