Hello Milan,
Every Major Indian Petroleum Company has subsidiaries in foreign countries. If you have an aspiration to work in Petroleum and Energy sector, then it is a very good decision. The petroleum sector is one of the most crucial economic factors for any country. You can imagine how important this sector is.
Oil and Natural Gas Corporation, Indian Oil, Bharat Petroleum, GAIL, Reliance Industries, Essar Energy are one of those industries have their branch in foreign countries. You will be provided accommodation by the company itself whereas some Company hires local residential for international integrity purpose. 

If you join any of the above, you can get posted abroad locations based on your performance and Cost to Company. 
If you wish to work abroad, then after 2-3 years of work experience you can go abroad easily. There are lots of opportunity in Oil Petroleum and Refineries sector. Just perform well.
All the best.