| Abstract Submission No. | ABS-4.1-0037 |
| Title of Abstract | Deep Water Sedimentary Modelling Based on Geophysical Data Interpretation for Prospectivity Analysis towards Hydrogen Exploration in Andaman Basin |
| Authors | Dhritideb Karmakar*, Saurabh Datta Gupta |
| Organisation | Indian Institute of Technology (Indian School of Mines) Dhanbad |
| Address | VILL- PEARAH, P.O.-GANDHARBAPUR, DIST-N 24 PARGANAS Basirhat, West Bengal, India Pincode: 743427 E-mail: dhritidebkarmakar2002@gmail.com |
| Country | India |
| Presentation | Poster |
| Abstract | The Andaman basin, which is a part of Sunda Arc System, associated with convergence of west Burmese plate and subducting eastern Indian plate. The basin represents a prospect for unconventional energy resources, particularly White Hydrogen, which is very famous globally for its sustainability in the perspective of Energy Transition. This study mainly focuses on the deep marine environment of Andaman basin in the North-North west region of the western flank of main island. Only a few no. of seismic lines are available in the study area for interpretation. In absence of well log data, a comprehensive lithological idea, structural and stratigraphic concepts from literature survey is implemented for marker selection and horizon mapping. The detailed attribute analysis driven extraction of geological structure and sequence stratigraphic interpretation are also done based on the available data set and related ideas from previous works. The seismic interpretation reveals key deep water depositional features like submarine canyon, fan lobes, channel-levee complex, also with some turbidite sequences. Additionally slope apron systems and accretionary prism sedimentation are identified in the northern part of the basin. The integration of this information with published tectono- stratigraphic environment gives an insight into sediments dispersal patterns and potential entrapment mechanisms relevant to natural accumulation of hydrogen in northern Andaman. The presence of mud volcanoes in the area, give a further support in likelihood of deep-seated fluid or gas migration pathways, which may include molecular hydrogen generated by Serpentinization and Radiolysis. Owing to limited data availability, certain assumptions and insights from previously published works were incorporated, which introduces a degree of uncertainty. Although the lack of data constrains in more accurate characterization of reservoir, the sedimentary model gives a overall framework of deep water depositional set up towards prospectivity analysis for natural hydrogen exploration in such a underexplored basin like Andaman. |
| Keywords | Seismic Interpretation, Stratigraphy, Sedimentary Modelling, Deep Marine Environment, Serpentinization, Natural Hydrogen |