The Petroleum reserves of India are in which of the following region? I. Sedimentary basins of Assam. II. Off-shore region in the Arabian sea

The correct answer is Both I and II . Key Points Petroleum reserves in India are primarily concentrated in the sedimentary basins of Assam and the off-shore regions in the Arabian Sea , making these two regions significant contributors to India's crude oil production. The sedimentary basins of Assam have long been known for their petroleum deposits. The Dibrugarh and Tinsukia districts host major oilfields such as Digboi, Bongaigaon, and Moran. Hence, statement I is correct. The offshore region in the Arabian Sea includes the Bombay High , India's largest offshore oilfield. It is managed by the Oil and Natural Gas Corporation (ONGC) and contributes significantly to India’s crude oil output. Hence, statement II is correct. India has a total of 26 sedimentary basins , out of which 7 are currently producing oil . These basins are divided into onshore and offshore areas . The petroleum reserves in these regions play a vital role in fulfilling the energy needs of the nation, reducing dependency on imports. Additional Information Petroleum Reserves in Assam: The Digboi oilfield , located in Assam, is the oldest oilfield in Asia and is still operational. Major oilfields in Assam include Duliajan, Moran, Lakwa, and Baghjan . These oilfields are managed by Oil India Limited (OIL) . The crude oil extracted from Assam is refined at the Numaligarh Refinery , which is one of the most modern refineries in India. Assam’s oilfields have been crucial for India’s petroleum industry since the late 19th century. Offshore Reserves in the Arabian Sea: Bombay High , discovered in 1974 , is India’s largest offshore oilfield and is located about 160 km off the Mumbai coast . Other important offshore fields include Neelam, Heera, and Bassein , which also contribute significantly to India's crude oil production. The Arabian Sea reserves are managed by ONGC , which employs advanced technologies for exploration and production. Offshore production accounts for more than 40% of India's total crude oil output . India’s Sedimentary Basins: India has 26 sedimentary basins , categorized into onshore and offshore regions . Some of the notable onshore basins include Assam-Arakan, Cambay, and Rajasthan , while offshore basins include the Krishna-Godavari Basin and Cauvery Basin . Exploration and production activities are carried out by organizations such as ONGC, Oil India Limited, and private sector companies . Importance of Petroleum Reserves: Petroleum reserves are vital for meeting India's energy demands , which are increasing due to industrialization and urbanization. India imports approximately 80% of its crude oil , and domestic reserves help reduce the import dependency. The petroleum sector significantly contributes to India's GDP and employment, especially in regions like Assam and Gujarat. Important Points Bombay High: Discovered in 1974 , it is located in the Arabian Sea. It contributes approximately 38% of India’s total crude oil production . ONGC uses advanced technologies like Enhanced Oil Recovery (EOR) to maximize output. Assam Oilfields: Assam’s oilfields have been operational since the late 19th century. The oil produced is refined at Guwahati, Bongaigaon, and Numaligarh refineries . These oilfields are known for their high-quality crude oil . Krishna-Godavari Basin: Located in Andhra Pradesh, it is one of the richest offshore reserves. It has significant deposits of natural gas and crude oil . Production from this basin contributes to India’s energy security .