According to the decisions of President Gurbanguly Berdimuhamedov, Dovletdurdy Tachdurdiyevich Hajiyev was appointed as the Chairman of the State Concern “Turkmenneft”, Sahym Abdrahmanov as the Chairman of the State Corporation “Turkmengeologiya”, and Dovletmyrat Nurberdiyevich Byashimov as the General Director of Turkmenbashy Complex of Refineries.