Master10
Mining, Minerals & Strategic Metals Module

Fossil Fuels, Petroleum Basins & MMDR Framework

Fossil fuel reserves and statutory mineral governance underpin India's industrial energy security and raw material supply chains. Coal deposits are predominantly distributed across two geological formations: Gondwana coalfields (accounting for over 98% of reserves in river valleys like Damodar, Son, Mahanadi, and Godavari) and Tertiary coalfields in Assam and Meghalaya. Hydrocarbon exploration spans 26 sedimentary basins categorised by commercial maturity under the Directorate General of Hydrocarbons (DGH), with key producing regions in the Mumbai Offshore, Cambay Basin, Krishna-Godavari deepwater tracts, and Assam Shelf. The regulatory architecture is governed by the Mines and Minerals (Development and Regulation) Act of 1957, which was amended to introduce competitive e-auctions, composite exploration licences, and the District Mineral Foundation (DMF) for local community welfare.

Key Concepts & Examination Highlights

  • Over 98% of India's coal reserves belong to the Gondwana geological age, primarily found in the Damodar, Mahanadi, Godavari, and Wardha basins.
  • Jharia in Jharkhand is India's largest coalfield and the primary domestic source of prime coking coal used in metallurgical blast furnaces.
  • Digboi in Assam, discovered in 1889, is India's and Asia's oldest operating oil well and refinery.
  • The MMDR Amendment Act of 2015 mandated competitive e-auctioning of mineral concessions and instituted the District Mineral Foundation (DMF).
  • Anthracite is the highest quality coal with over 80% carbon content found only in small quantities in Jammu & Kashmir, whereas Bituminous coal forms the bulk of Indian Gondwana reserves.
  • Tertiary coal, which is younger (Eocene epoch) and characterized by higher moisture and sulphur content, is found in Assam, Meghalaya, Arunachal Pradesh, and Nagaland.
  • Neyveli in the Cuddalore district of Tamil Nadu holds the largest deposits of Lignite (brown coal) in India, mined by NLC India Limited for thermal power generation.
  • The Directorate General of Hydrocarbons (DGH), established in 1993 under the Ministry of Petroleum and Natural Gas, oversees upstream petroleum exploration and licensing.
  • Hydrocarbon Exploration and Licensing Policy (HELP), introduced in 2016, replaced NELP by adopting a revenue-sharing contract model and an Open Acreage Licensing Policy (OALP).
  • The Krishna-Godavari (KG) offshore basin on the east coast is renowned for massive deep-water natural gas discoveries, notably the KG-D6 block.
  • District Mineral Foundations (DMFs) are statutory non-profit trusts established under Section 9B of the MMDR Act in mining-affected districts, funded by contributions from mining lease holders.
  • Coal India Limited (CIL), established in 1975 and headquartered in Kolkata, is a Maharatna CPSE producing over 80% of India's domestic coal.
  • Mumbai High (discovered in 1974 by ONGC using the seismic drillship 'Sagar Samrat') is India's most productive offshore oilfield, located in the Arabian Sea off Mumbai.
  • The Cambay Basin in Gujarat hosts major onshore and offshore oil discoveries, including Ankleshwar (termed the 'Fountain of Prosperity' by Jawaharlal Nehru), Kalol, and Mehsana.
  • The Barmer Basin in Rajasthan hosts the massive onshore Mangala, Bhagyam, and Aishwariya (MBA) oilfields, operated commercially by Cairn Oil & Gas (Vedanta).
  • Oil and Natural Gas Corporation (ONGC), established in 1956 and headquartered in New Delhi, is India's largest crude oil and natural gas exploration Maharatna CPSE.
  • Oil India Limited (OIL), headquartered in Duliajan, Assam, was founded in 1959 to pioneer hydrocarbon exploration in the Northeast and achieved Maharatna status in 2023.
  • The Raniganj Coalfield in West Bengal, where commercial mining began in 1774 under the British East India Company, is the birthplace of the Indian coal industry.
  • Singareni Collieries Company Limited (SCCL), jointly owned by the Government of Telangana (51%) and Government of India (49%), operates coal mines across the Pranhita-Godavari basin.
  • Coal Bed Methane (CBM) is an unconventional form of natural gas extracted directly from coal seams, with prominent commercial blocks operating in the Raniganj and Jharia basins.
  • National Mineral Exploration Trust (NMET) was established under Section 9C of the MMDR Act to fund regional and detailed non-fuel mineral exploration projects.
  • Indian Bureau of Mines (IBM), established in 1948 and headquartered in Nagpur, functions as the statutory regulatory authority for conservation and systematic development of minerals.
  • The Petroleum and Natural Gas Regulatory Board (PNGRB) was constituted under the PNGRB Act, 2006, to regulate refining, transportation, distribution, and city gas networks (CGD).
  • Strategic Petroleum Reserves (SPRs) are managed by the Indian Strategic Petroleum Reserves Limited (ISPRL), storing emergency underground crude oil in rock caverns at Visakhapatnam, Mangaluru, and Padur.
  • Rat-hole mining is an unscientific and hazardous manual coal extraction method traditionally practiced in Meghalaya, banned by the National Green Tribunal (NGT) in 2014.
  • The Directorate General of Hydrocarbons (DGH) was established in 1993 under the Ministry of Petroleum and Natural Gas to oversee upstream petroleum exploration and reservoir management.
  • DGH categorizes India's 26 sedimentary basins (covering 3.36 million sq km) into three categories: Category-I (proven commercial production), Category-II (contingent resources), and Category-III (prospective basins).
  • India's seven Category-I commercial petroliferous basins are Cambay, Western Offshore (Mumbai High), Assam Shelf, Krishna-Godavari (KG), Cauvery, Rajasthan (Barmer), and Tripura-Cachar.
  • The first oil well in India and Asia was drilled at Digboi in the Tinsukia district of Assam in 1889, leading to the commissioning of the Digboi Refinery in 1901, the world's oldest operating refinery.
  • The Mumbai High offshore oilfield was discovered in 1974 by ONGC using the specialized self-elevating drillship 'Sagar Samrat', located 160 kilometres off the coast of Mumbai in the Arabian Sea.
  • The Krishna-Godavari Deepwater Basin (KG-D6 block) in the Bay of Bengal, discovered by Reliance Industries in 2002, contains massive deep-water gas reservoirs including the Dhirubhai-1 and Dhirubhai-3 fields.
  • The Barmer Basin in Rajasthan houses India's largest onshore oil discovery in recent decades, with the Mangala, Bhagyam, and Aishwariya (MBA) fields discovered by Cairn India (now Vedanta).
  • The Hydrocarbon Exploration and Licensing Policy (HELP) was introduced in March 2016, replacing the New Exploration Licensing Policy (NELP) of 1997.
  • Key pillars of HELP include a Uniform Licensing Policy (ULP) for all hydrocarbons (conventional, CBM, shale gas), an Open Acreage Licensing Programme (OALP), and a Revenue Sharing Contract (RSC) model.
  • Under the Open Acreage Licensing Programme (OALP), exploration companies can carve out their own contiguous exploration blocks from the National Data Repository (NDR) without waiting for formal bid rounds.
  • Coal in India occurs primarily in two geological sequences: Lower Gondwana coal formations (Permian age, c. 250 million years old) and Tertiary coal formations (Eocene-Oligocene-Miocene age, c. 15-60 million years old).
  • Gondwana coal accounts for approximately 98% of India's total geological coal reserves and over 99% of total domestic coal production.
  • Gondwana coal is predominantly bituminous and sub-bituminous, characterized by low moisture, low sulfur content, but relatively high ash content (35-45%).
  • Tertiary coal has high volatile matter, high moisture, and high sulfur content (2-7%), found in Assam (Makum, Nazira), Meghalaya (Cherrapunji, Daranggiri), Arunachal Pradesh (Namchik-Namphuk), and Nagaland.
  • The Raniganj Coalfield, located across Paschim Bardhaman district in West Bengal and Dhanbad in Jharkhand, was the birthplace of commercial coal mining in India, started in 1774 by Summer and Heatly.
  • The Jharia Coalfield in Dhanbad district, Jharkhand, is India's most important repository of prime coking coal, supplying essential metallurgical fuel to domestic blast furnaces.
  • The Singrauli Coalfield, spanning Madhya Pradesh and Uttar Pradesh, contains the 130-metre thick 'Jhingurdah' coal seam, one of the thickest coal seams in the world.
  • The Talcher Coalfield in Angul district of Odisha contains India's largest reserves of power-grade non-coking thermal coal, fueling major super thermal power stations.
  • Lignite, or brown coal, is an intermediate coal with high moisture (35-50%), with the largest deposits located at Neyveli in the Cuddalore district of Tamil Nadu, mined by NLC India Limited.
  • Coal Bed Methane (CBM) is natural gas (predominantly methane) adsorbed within the micropores of coal seams, commercially extracted from blocks in Raniganj, Jharia, and Sohagpur.
  • The Coal Mines (Special Provisions) Act, 2015, enabled the electronic transparent auction of coal mines to private and public sector commercial entities following the Supreme Court de-allocation of 204 coal blocks.
  • The Mineral Laws (Amendment) Act, 2020, and MMDR Amendment Act, 2021, abolished end-use restrictions for coal mine auctions, permitting 100% Foreign Direct Investment (FDI) under the automatic route for commercial coal mining.
  • The Coal Controller's Organisation (CCO), a subordinate office under the Ministry of Coal, regulates the conservation, safety, grading, and quality sampling of coal produced in India.
  • Strategic Petroleum Reserves (SPR) are subterranean rock caverns holding crude oil to safeguard against supply shocks, constructed by ISPRL at Visakhapatnam (1.33 MMT), Mangalore (1.5 MMT), and Padur (2.5 MMT).
  • India's refining capacity exceeds 250 million metric tonnes per annum (MMTPA), with the Jamnagar Refinery in Gujarat operated by Reliance Industries being the world's largest grassroots refining complex (1.24 million barrels/day).
Curriculum & Reference Sources: Ministry of Coal Annual Reports, Directorate General of Hydrocarbons (DGH), Ministry of Mines Legislative Compendium.

Sample Solved Questions & Concept Explanations

8 Verified Concept Questions
Q1.EASY

Which historic location in Assam is home to Asia's oldest operating oil refinery and the first commercial oil well drilled in India in 1889?

Q2.MEDIUM

Which river valley contains the greatest concentration of Gondwana coal deposits in India, hosting premier coalfields such as Jharia, Raniganj, and Bokaro?

Q3.HARD

Under the Mines and Minerals (Development and Regulation) Amendment Act of 2015, what non-profit statutory trust was created in all mining-affected districts to benefit project-affected communities?

Q4.EASY

In which coalfield in West Bengal was commercial coal mining first initiated in India in 1774 by John Sumner and Suetonius Grant Heatly of the East India Company?

Q5.EASY

In which year did ONGC discover India's richest offshore oil and gas field, 'Bombay High' (Mumbai High), located in the Arabian Sea?

Q6.EASY

Which state-owned coal company, co-owned in a 51:49 equity ratio by the Government of Telangana and the Government of India, operates in the Pranhita-Godavari Valley?

Q7.EASY

Which town in the Cuddalore district of Tamil Nadu hosts India's largest opencast lignite (brown coal) mining and thermal power generation complex operated by NLC India?

Q8.EASY

Which coalfield located in Dhanbad district, Jharkhand, is India's primary domestic source of prime coking coal required for metallurgical blast furnace steelmaking?