KIEV, Sept. 25 - UkrNafta, Ukraine's biggest oil producer, wants tax breaks reinstituted for the development of fields that are exhausted or difficult to develop, First Deputy Chairman for economics and finance at the company Volodymyr Pustovarov said.

"Normal practice throughout the world is to differentiate taxation for production of oil to set lower taxes for the development of exhausted fields or resources that are difficult to extract," he said.