Amni International Petroleum Development Company Limited | 8,597 followers on LinkedIn. ...focused on growth | Amni International Petroleum Development Company Limited (Amni) is an Independent Oil & Gas Exploration & Production (E&P) company with its head office in Lagos, Nigeria. Amni is proud to be one of Nigeria’s leading Independent Oil Producing Companies. Over 25 years, Amni has pioneered the participation of independent companies in offshore oil and gas fields in West Africa.