ALMATY, Aug 6 (Reuters) - Kazakhstan's biggest oil

producer, Chevron ( CVX )-led Tengizchevroil (TCO), on Tuesday

reported first-half oil output down 3.4% from the same period

last year.

TCO produced 14.4 million metric tons (114.6 million

barrels) of crude in the period and also sold 369,000 tons of

liquefied petroleum gas and more than 1.4 million tons of

sulphur, it said in a statement.