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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: India—Historical and Emerging Plays, Identifying New
Petroleum Systems Using Regional PSDM Seismic 
Data
Data
1Independent Geological Consultant, Geological Advisor to GX Technology, Houston, TX
2Rift Institute for Teaching and Training, Las Cruces, NM
3GX Technology, ION Geophysical, Houston, TX
This presentation provides an overview of the historic producing
provinces of India. The discussion will include examples
of recent emerging plays together with some new play ideas for India’s offshore areas based on the results of a campaign of
regional pre-stacked depth migrated (PSDM) seismic acquired in
2006-2007 by ION-GX Technology.
The history of oil and gas discoveries
in India dates back to 1867
in the Assam Basin onshore and
to the 1974 discovery of the giant
Bombay (Mumbai) High field off
the west coast. Earliest east coast
discoveries were in 1979-1980 in
the Krishna-Godavari (K-G)
Basin near the coast and expanding
to the offshore in the 1990s.
Since then, gas was found along
the east coast in a few fields in the
Mahanadi Basin in 2003, but the
big east coast gas reserves were
discovered in the new offshore KG
fields. These discoveries now
total over 30 trillion cubic feet of
gas and promise to provide a
sorely needed source of fuel to
meet India’s rapidly growing
energ y consumpt ion. Mos t
recent ly, di scover ies in the
Cretaceous beneath the K-G
Tertiary gas field, in the deep
water of the Cauvery Basin, and
in the Kutch Basin on the west
coast, suggest additional new
potential.
Two examples of new plays will
be presented that have greatly
increased India’s exploration
India:
Surface geology and free air gravity—showing basins and oil and gas fields.
End_Page 23---------------
potential. The first, on the east coast, is the 85E Ridge. The 85E Ridge was previously thought to be a hot spot track and is now interpreted to be a continental fragment supporting a very large (50 by 100 kilometer) carbonate platform underlain by potential Jurassic through Cretaceous source rocks. The second example is a large deep (15 to 20 kilometer) coastal graben that likely contains Albian-Aptian source rocks in the active oil generation window beneath the Deccan Traps on the west coast.
Understanding the new play ideas relies
on data
from India’s conjugate margins in
Africa and Antarctica, and on analogs to the formation of Indian
continental margins that formed during the breakup of
Gondwana.
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