TANGERANG, Indonesia, May 20 (Reuters) - U.S. oil major

Chevron ( CVX ) is interested in exploring and developing oil

and gas assets in Indonesia with sizable reserves, Djoko

Siswanto, chairman of its upstream oil and gas regulator SKK

Migas, said on Tuesday.

Chevron ( CVX ) is seeking blocks with potential reserves of around

15 trillion cubic feet of gas, Djoko said, adding that the

company is currently in an early evaluation of some of those

potential assets.

Indonesia will offer blocks in Bali or other parts in

eastern Indonesia.