Share Facebook Twitter LinkedIn WhatsApp OPEC Conference President Khaled al-Falih (seated, left) and OPEC Secretary General, Dr. Mohammed Barkindo, at the start of the 173rd OPEC Conference in Vienna on Thursday. Photograph: Joe Klamar/AFP/Getty Images OPEC Conference President Khaled al-Falih addresses the world press at the 173rd OPEC Conference in Vienna. Photograph: Joe Klamar/AFP/Getty Images Delegates at the 173rd OPEC Conference in Vienna.