KIEV, Sept. 25 - Ukraine will probably sign a production sharing agreement (PSA) with Chevron over development of Olesska shale gas deposit by early November, Environment and Natural Resources Minister Eduard Stavytskiy said Tuesday.

Chevron was picked by the government in May as the winner of tender for development of the Olesska deposit in the Lviv region, outbidding Eni S.p.A. of Italy. Chevron submitted its draft PSA to the government on Sunday.