Nauvall Juliansyah is a Senior Geophysicist at Harbour Energy Indonesia, with 14 years of experience working in oil and gas industry focusing on regional and exploration activities, including basin studies, prospect evaluation and maturation in East Java, East Kalimantan, South Sumatra, North Sumatra, East Indonesia, and several other basins globally. Nauvall has been with a number of national and international oil and gas companies throughout his career, such as HESS, PETRONAS and Harbour Energy. He is currently located in Jakarta as part of Harbour Energy Indonesia Andaman Exploration Team, actively conducting prospects identification and evaluation within Harbour Energy’s active blocks as well as active involvement in exploration well drilling campaign. He has been actively writing and presenting technical publication in numerous conference and events, with his latest publication was awarded as Best G&G Oral Presentation during Indonesia Petroleum Association Conference and Exhibition in 2022.