Data Proc and Acq SIG: Unexplored Deepwater Basins of North Andaman Sea - Apr 4th

This is a Hybrid Event, you will still need to pre-register for either in person or online participation.

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Meeting Location:
10001 Richmond Ave, Q Auditorium
Houston TX 77042

Speaker: Rajesh Kalra, WesternGeco, Schlumberger India Technology Center
Co-Authors: Roberto Fainstein (late), Ex-Honorary Professor, University of Coimbra and Srinivas Chandrashekar, Oil and Natural Gas Corporation

Deepwater basins of the North Andaman Sea in the northern edge of the Far East Archipelago were assessed recently by state- of-the-art seismic technology. The North Andaman Sea embraces several Tertiary basins consisting of a forearc basin, a volcanic arc and a back-arc basin. Their massive but largely unknown stratigraphy consists of deeper Neogene lacustrine and deltaic sediments that infill basal synrift half-grabens, blanketed by massive sequences of the Late Oligocene, Miocene, and recent strata. In the extensional forearc, the deeper seismic marker horizons were structurally mapped and identified by acoustic impedance contrasts as carbonates, mass-transport complexes, synrift, and basement The shallower Pliocene and Pleistocene sequences are dominated by low-seismic-velocity hemipelagic clays that were investigated using seismic attributes and seismic inversion. In the back arc the relatively larger graben features were affected by tectonic inversion contemporaneous with the foundering of the basin into deep water in the Late Miocene. In the forearc and back arc, main hydrocarbon plays are the rimmed Early Miocene carbonate platforms, the paralic and deltaic sediments beneath the platform and the deepwater clastics of hemipelagic clays and sands that form the dominant strata of the Mio-Pliocene. This modern seismic exploration involved acquisition, processing, and interpretation to assess the hydrocarbon prospectivity of undrilled deepwater regions in the forearc and back-arc.

Speaker Biography: Rajesh Kalral, WesternGeco, Schlumberger India Technology Center (Recently relocated to Houston)

Dr. Rajesh Kalra has been working with SLB (Schlumberger) for 25 years and currently assigned as Exploration Data Business Manager based in Houston. Rajesh holds Doctorate from Indian Institute of Technology, Bombay (India), Masters from Leicester University (UK) and Master of Technology degree in Applied Geophysics from Kurkukshetra University (India). During his career with Schlumberger, he has performed in various roles & capacities ranging from Technical, Learning & Development, Human Resources, Sales & Marketing and Operations globally. He has several publications in conferences and journals at international level. In past, he has also participated twice in Antarctic Expeditions. His current area of interest has been in seismic acquisition and processing techniques, sub-basalt exploration and deepwater Andaman sea.

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4/4/2023 5:00 PM - 6:00 PM
Central Daylight Time

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