Sandeep Chandola is a Custodian (Geophysics) with PETRONAS, the Malaysian national oil company. He received a master's degree in physics in 1984 from H.N. Bahuguna Garhwal University and a specialized diploma in petroleum geophysics from the Indian Institute of Technology, Roorkee in 1985. Sandeep started his career as a field geophysicist with ONGC, the Indian national oil company, and served for more than 20 years in various capacities in seismic data acquisition, interpretation, technology evaluation and strategic planning. In 2005, he joined PETRONAS Carigali in the Exploration Division, where he continues. His main professional contributions include design and implementation of innovative land, marine, and OBC 3D acquisition geometries, introduction of several new geophysical technologies (broadband seismic, 4C seismic, 4D seismic, controlled-source electromagnetics, full-tensor gradiometry, passive seismic, etc.) in ONGC and PETRONAS. Sandeep is a part of the Global Affairs Committee of SEG, a member of SEG, EAGE and the Society of Petroleum Geophysicists (India), and has been on the organizing committee of several workshops and conferences by SEG and EAGE. Sandeep has more than 35 technical publications, including papers presented at the SEG, EAGE, IPTC, PGCE, SPG and other international conferences. He was the recipient of the coveted National Petroleum Management Programme Award by the government of India in 2005 and the Professional of the Year Award by ONGC in 2004. In 2002, Sandeep also received the award for presenting the best technical paper at SPG conference at Mumbai.