NNPC said it would not hinder but instead facilitate international oil and gas companies in executing divestments. : Nigerian National Petroleum Co. Ltd. (NNPC) has said it would not hinder but instead facilitate international oil and gas companies (IOCs) in executing divestments. Mele Kyari, chief executive of the national oil and gas company, declared the position at the Nigerian International Energy Summit in Abuja, NNPC said in a news release.