India’s Hydrocarbon Outlook 2024 82 A Report on Exploration & Production Activities Source: DGH Internal Source: DGH Internal Himalayan foreland basin is an east–west trending elongate basin that extends from Pakistan in the west to India in the east. The basin came into existence at the close of Mesozoic Era following the first India–Asia impingement, resulting in the deposition of the initial foredeep sediments in front of the rising Himalaya. Hydrocarbon exploration in Himalayan Foothills of erstwhile-named Punjab Basin was initiated in 1956 by M/s ONGC. Under geophysical campaign, aeromagnetic surveys were conducted in 1957, which was followed by seismic and gravity-magnetic (GM) surveys in 1957-58. Major part of the basin is covered by GM surveys. Such surveys bring out clearly that northwest-southeast Himalayan trend is the dominant lineament in the basement. However, there is a strong perception of northeast-southwest Aravalli trend in the area lying between Kalka and Dehradun. The basin has the close analogy with Potwar Basin of Pakistan. Poonch-Ravi sector, Doon Sector and Rishikesh-Tanakpur sector call for conceptual analysis in view of data gaps. The source rocks identified are Proterozoic limestone having moderately good TOC of 0.521.58%. While Subathu shales have poor organic matter content, the Eo-Cambrian shales are perceived to be equivalent to Salt range Formation that has reported TOC of 23 %. The reservoirs are limestone of Vaishnodevi and Subathu Group and sandstones of Dharamsala/ Muree Group. 9. HIMALAYAN FORELAND BASIN Himalayan Foreland is a Category III basin, implying that the basin has entirely undiscovered inplace, that calls for intense exploration for a potential discovery. The geographical area of the basin partially overlaps with the state(s) of Chandigarh, Haryana, Himachal Pradesh, Jammu and Kashmir, Punjab, Uttar Pradesh and Uttarakhand.
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