Sterling Energy and Exploration Production Limited (SEEPCO) , Diversification in Petroleum Exploration and Production. The SEEPCO has businesses in 6 continents and several countries viz. India, USA, China, Japan, Europe, Middle East, South East Asia etc, The SEEPCO has ventured into the Petroleum Exploration and Production in 2006 by establishing Sterling’s footprint as an Operator in an OPEC country, Nigeria.