Page 69 - DGH_Annual_Report

India's Sedimentary Basins: Subsurface Insights 69

Basin appraisal and regime-wise active acreage:

Location Basin area (skm) Appraised (skm) Active acreage [Nos./Area (skm)]

Onland 5,360 5,360 (100%) No active acreage
The basin occupies an area of 5,360 sq km. It has been appraised to the extent of 5,360 sq km (100%).

As on 31.03.2025, in terms of single-flavour Sciences, Ministry of Defence and Indian Navy.
primary datasets, NDR has archived 1,266,413 line Both MA and ECS are undertaken by NOCs
km 2D seismic data, 457,937 sq km 3D seismic (ONGC and OIL).
data, 22,777 wells including 8,180 exploratory
wells. These data exclude all value-added Out of 3.36 million sq km basin area, 2.62 million
reprocessed variants and those acquired but not sq km (79.5%) has been appraised and 0.51 sq
km area(15%) is active under different operating
yet submitted to NDR. regimes.
Among two ongoing 2D seismic acquisition As a part of GoI-sponsored initiatives,
campaigns, Mission Anveshan(MA) has been country-level assessment of conventional
planned across seven onland basins (Rajasthan, and unconventional hydrocarbons has been
Ganga-Punjab, Cuddapah, Chhattisgarh, KG, formulated with proposed participation of NOCs
Deccan Syneclise and Saurashtra) to acquire and major private E&P Operators. Such study
closed-grid data around the leads identified will be carried out by expert consulting agency
from 2D seismic data acquired under National to be engaged through competitive bidding.
Seismic Programme (2016-2022). As on The study will create National Hydrocarbon
31.03.2025, 2,954 line km was surveyed under Atlas (NHA) and help integrate with discovered
MA against the planned quantum of 20,275 line resources on National PRMS Chart. All project
km. In another 2D seismic survey, christened as deliverables will be software-agnostic and
Extended Continental Shelf (ECS) Survey has the expert-audited with futuristic update with new
objective to establish India's claim for extended data.
continental shelf boundary in East and Western
offshore beyond present day EEZ. Out of total The Chapter herein presented is intended to
30,000 line km planned, as on 31.03.2025, 22,876 give an overview of India's sedimentary basins
line km data were acquired. The western offshore with latest facts segregated at basin-level and
acquisition has been completed and east to will serve as a quick reference to hydrocarbon
be completed. The campaign is supervised by prospectivity. Additionally, it may be used as a
DGH under Ministry of Petroleum and Natural brief dossier for Indian Sedimentary Basins and
Gas in close coordination with Ministry of Earth Hydrocarbon potential.