KYIV, April 30 – The newly-appointed chairman of the board of Naftogaz Ukrayiny, Yuriy Vitrenko, proposes to consider the merger of Ukrnafta and Ukrtatnafta (Kremenchuk oil refinery) with the subsequent receipt of a controlling stake in the new vertically integrated company by the state.

"On the one hand, Ukrnafta actually extracts oil, and only Kremenchuk oil refinery can process it in Ukraine. On the other hand, Kremenchuk oil refinery can take large volumes of oil in Ukraine only from Ukrnafta. From an economic point of view, there is a certain economic feasibility in the so-called vertical integration, when there is integration between production and processing," he said in an interview with Interfax-Ukraine.