Kazakhstan's oil output down after drone attacks forced exporting terminal closure, sources say

MOSCOW, July 23 (Reuters) - Oil production in Kazakhstan has declined following closure of a Black Sea terminal, the main gateway for the country's crude exports, which was attacked by drones, two industry sources said on Thursday.

Output decline is especially pronounced at the Chevron-led CVX.N Tengiz oilfield, the country's largest.

A source said output there more than halved, to around 406,000 barrels per day on Wednesday from 925,000 bpd on average in July.

Overall oil and gas condensate output in Kazakhstan declined on Wednesday to 1.63 million bpd from July's average of 2.07 million bpd, according to the source.

Chevron and Kazakhstan's energy ministry did not immediately reply to requests for comment.