Home :: E&P Activities -> Sedimentary Basins Tuesday , September30, 2014


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  • Sedimentary Basins
                   

The sedimentary basins of India, onland and offshore up to the 200m isobath, have an areal extent of about 1.79 million sq. km. So far, 26 basins have been recognized and they have been divided into four categories based on their degree of prospectivity as presently known. In the deep waters beyond the 200m isobath, the sedimentary area has been estimated to be about 1.35 million sq. km. The total thus works out to 3.14 million sq. km.

Over the last twelve years, there have been significant forward steps in exploring the hydrocarbon potential of the sedimentary basins of India. The unexplored area has come down to 15% which was 50% in 1995-96.

Credit for this achievement goes in large measure to the surveys carried out by DGH in unexplored/poorly explored areas of the country including Deepwaters off west coast, east coast and in Andaman sea and acreages awarded for exploration under NELPs. Concerned efforts are continuously being done to reduce the unexplored area further.

On the basis of prospectivity basins have been categorised as follows:
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Category : Proven Commerical Productivity
Basin NameOnland AreaOffshore AreaTotal
Assam-Arakan116000-116000
Cambay51000250053500
Cauvery250003000055000
Krishna-Godawari Offshore280002400052000
Mumbai Offshore-116000116000
Rajasthan126000-126000

Category : Identified Prospectivity
Basin NameOnland AreaOffshore AreaTotal
Kutch350001300048000
Mahanadi-Nec550001400069000
Andaman-Nicobar60004100047000

Category : Prospective Basins
Basin NameOnland AreaOffshore AreaTotal
Bengal570003200089000
Ganga Valley186000-186000
Himalyan Foreland30000-30000
Kerla-Konkan Lakshdweep-9400094000
Saurashtra520002800080000
Vindhyan162000-162000
Purnea--0

Category : Potentially Prospective
Basin NameOnland AreaOffshore AreaTotal
Bastar5000-5000
Bhima Kaladgi8500-8500
Chhattisgarh32000-32000
Cuddapah39000-39000
Deccan Syneclise273000-273000
Karewa3700-3700
Narmada17000-17000
Pranhita Godavari15000-15000
Satpura-S.Rewa-Damodar46000-46000
Spiti Zanskar22000-22000

Category : Deep Water Areas Within Eez
Basin NameOnland AreaOffshore AreaTotal





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