Ukraine's largest gas producer, PJSC Ukrgazvydobuvannia, which is a Naftogaz fully-owned subsidiary, has intensified efforts on the additional exploration of gas fields in the west of the country, the company's press service reports.
U.S. oil and gas companies Frontera Resources and Longfellow want to extract oil and gas in Ukraine's Odesa and Poltava regions, according to the Ukrainian Energy and Coal Industry Ministry's press service.