Petroleum and Natural Gas Minister Dharmendra Pradhan today said that Oil and Gas Sector is emerging as a vehicle for Socio Economic change in the country. Inaugurating the Petrotech 2016 Exhibition at Pragati Maidan in New Delhi, Mr Pradhan said, over the years it has made efforts to provide affordable energy throughout the country. The Petrotech -2016 Exhibition is one of the biggest oil and gas exhibitions, in which nearly 600 exhibitors from over 50 countries are participating.