Page 43 - DGH_Annual_Report

India's Sedimentary Basins: Subsurface Insights 43

2.2.5 KUTCH BASIN

Kutch is a Category II basin with sub-commercial discovered in-place, potential to be commercially
produced. The area geographically overlaps with the state(s) of Gujarat, Rajasthan.

Source: DGH Internal

established in Paleocene, Late Cretaceous,
and Early Cretaceous in the basin. All the
hydrocarbon accumulations are related to mild
inversion tectonics involving Mesozoic and
Tertiary sections.

Improved sub-basalt imaging is a major push
towards assessment of Mesozoic sequences.
Basin area is under revision to 69,986 sq km,
Source: DGH Internal subject to a detailed review during the next
hydrocarbon resource assessment study.
The basin is geologically contiguous with • Hydrocarbon prospectivity and Basin
Saurashtra basin, separated by the Saurashtra maturity:
Arch in the offshore part. The Mesozoic
sediments ranging in age from Middle Jurassic In the basin, 17 plays are identified within Middle
to Cretaceous are exposed in the mainland Jurassic-to-Cretaceous in Onland and Middle
Kutch and encountered in the wells drilled in Jurassic-to-Trap-to- Middle Miocene in Offshore.
offshore. The Cenozoic strata are also exposed Petroleum system was modelled in 3D where
in the southwestern part of Kutch mainland and datasets were adequate and Aerial Yield method
encountered in the offshore wells. was used where data were limited.

The basin has significant opportunity to Onland sub-basin has a total hydrocarbon
consolidate discovered resources of Tertiary in-place of 39 MMTOE and this is entirely
Plays. Being analogous to Saurashtra Basin, undiscovered risked in-place. The basin has
opportunity also lies for exploring Mesozoic 100% of total in-place, potential to be explored
Plays. and discovered.

Stratigraphically, the northern limit of Kutch Offshore sub-basin has a total hydrocarbon in-
outcrops is continued beyond Indo-Pakistan place of 457 MMTOE. This includes discovered
border. In the offshore of Kutch and further in-place of 60 MMTOE and undiscovered risked
south, the basin is contiguous with Saurashtra in-place of 397 MMTOE. The discovered in-place
offshore basin. is subject to commercial development.
Middle Miocene and Early Eocene are the The basin has 86.9% of total in-place, potential to
main plays and additional hydrocarbons are be explored and discovered.