KIEV, Feb. 26 - Ukraine will probably sign a production sharing agreement with Chevron over development of Olesska shale gas deposit by early May, Environment and Natural Resources Minister Oleh Proskuriakov said Tuesday.

"I think that within the next two months the deal with Chevron will be signed," Proskuriakov said.

The PSA, originally expected to be signed by September 2012, was delayed amid opposition from local councils in regions due to environmental concerns.