Updates with Chevron statement, adds output from a source, detail

By Nailia Bagirova

BAKU, June 1 (Reuters) - Kazakhstan has restored its oil production to 290,000 metric tons per day following earlier production losses at the country's largest oilfield, Tengiz, Energy Minister Erlan Akkenzhenov said on Monday.

Kazakhstan produces 2% of the world's daily supply of crude oil. It is mainly exported via the Caspian Pipeline Consortium to Russia's port of Novorossiysk.

In barrels, production of crude and oil condensate reached around 2.175 million per day, according to Reuters calculations using barrels/tons ratio of 7.5.

Two industry sources told Reuters on Friday that oil production at the Chevron CVX.N-led Tengiz field fell sharply on May 26 as a result of an accident.

Chevron's venture in a statement on Friday said part of the Tengiz oilfield had experienced "minor operational disruption" on May 28 and that output was being restored. It did not give further details.

On Monday, Chevron's venture, Tengizchevroil, said its oil production was "close to normal operating rates" following a brief disruption at one of its facilities on May 28.

An industry source said oil production at Tengiz has recovered to around 900,000 bpd on May 31 from 310,000 bpd on May 28. The source also said that Kazakhstan's total oil and gas condensate production average at 2.1 million bpd in May, down from 2.16 million bpd in April.

Production at the Tengiz field, located near the Caspian Sea in the far west of Kazakhstan, was only fully restored by April after output was halted in January following an issue involving power distribution.