Honourable Minister of State for Petroleum Resources, Dr. Emmanuel Ibe Kachikwu (first right), NNPCGMD, Dr. Maikanti Baru (middle) and Secretary General of the Organisation of the Petroleum Exporting Countries (OPEC), Dr. Mohammed Sanusi Barkindo,at the Opening Ceremony of the 2018 Nigerian Oil & Gas Conference (NOG 2018) in Abuja, Tuesday