His proficiency extends to the technical evaluation of proposals and scientific reports, reserve estimation, and the development of play-based exploration strategies. He has also played a pivotal role in strategic planning, business development, OALP process, and acreage acquisition and bidding in ONGC, significantly expanding exploration activities in Category-II and III basins.

Dr. Nag has published over twenty research and technical papers in scientific journals and has presented his work at major international and national conferences. He also serves on the board of studies for several Indian universities.