Ukrainian oil and gas company Naftogaz of Ukraine and U.S. supermajor ExxonMobil Corp. have signed a memorandum of cooperation to explore unconventional resources in Ukraine.

According to a statement by Ukraine's Energy and Coal Industry Ministry, the companies plan to analyze reserves of coal bed methane, shale gas, tight gas and other unconventional resources.

More information on this development will be posted as it becomes available.