Page 55 - DGH_Annual_Report

India's Sedimentary Basins: Subsurface Insights 55

Source: DGH Internal

• Hydrocarbon prospectivity and Basin
maturity:

In the basin, Satpura and South Rewa have Early
Permian-to-Cretaceous plays while Damodar
has Early Permian-to- Triassic. In 3 sub-basins of
Satpura, South Rewa and Damodar, Aerial Yield
method was used on analogy of Cooper Basin
(Australia).
Source: DGH Internal
Satpura sub-basin has a total hydrocarbon
in-place of 19 MMTOE and this is entirely
The Gondwana rocks of Satpura-South Rewa- undiscovered risked in-place. South Rewa sub-
Damodar Basin are exposed along a linear belt basin has a total hydrocarbon in-place of 39
and known for commercial production of coal MMTOE and this is entirely undiscovered risked
seam gas. in- place.

The basin has limited geoscientific data, specific Damodar sub-basin has a total hydrocarbon
to exploration of conventional hydrocarbons. in-place of 3 MMTOE and this is entirely
The elements of conventional petroleum system undiscovered risked in-place.
in the basin are largely speculative. • Overview of producing fields:

The basin has Gondwana sediments - both Commercial production in Damodar area
Lower Permian plays and the Upper Mesozoic. commenced in 2007. Major producing fields

The basin has hypothetical Gondwana with cumulative production in parenthesis are
petroleum system, having a close analogy with namely Raniganj-East (2.9 BCM), Raniganj-
the Cooper Basin of Australia. There are three South (1.8 BCM). The area has 4 fields with 702
plays identified. viz. Early Permian, Mid. to Late producing wells.
Permian and Triassic to Cretaceous across all Commercial production in South Rewa area
three sub-basins viz. Satpura, South Rewa and commenced in 2011. Major producing fields
Damodar. with cumulative production in parenthesis are
Instances of igneous intrusions call for namely Sohagpur-West (2.3 BCM). The area has
an integrated approach during mapping 2 fields with 391 producing wells. The maximum
hydrocarbon resources. flow rates achieved by any field on record are
Gas 1 MMSCMD.