Hydrocarbons (What are they?)
- Hydrocarbons are organic compounds composed exclusively of carbon and hydrogen atoms.
- They constitute the principal components of petroleum and natural gas and are important sources of energy and industrial raw materials.
- They occur naturally in underground geological formations and are formed predominantly through the transformation of buried organic matter over millions of years.
Classification of Hydrocarbons
| Type | Characteristics | Examples |
| Alkanes | Saturated hydrocarbons containing single carbon-carbon bonds | Methane, Ethane |
| Alkenes | Unsaturated hydrocarbons containing at least one carbon-carbon double bond | Ethene, Propene |
| Alkynes | Unsaturated hydrocarbons containing at least one carbon-carbon triple bond | Ethyne |
| Aromatic Hydrocarbons | Contain aromatic ring systems | Benzene, Toluene |
Major Sources of Hydrocarbons
1. Crude Oil (Petroleum)
- A naturally occurring liquid mixture of hydrocarbons found in geological reservoirs.
- Refined into petrol, diesel, aviation turbine fuel, LPG and other petroleum products.
2. Natural Gas
- A gaseous mixture consisting predominantly of methane (CH₄).
- Used in electricity generation, fertiliser production, domestic cooking and industrial processes.
3. Unconventional Hydrocarbons
- Include shale oil, shale gas, tight oil, tight gas and coal-bed methane (CBM).
- Generally require specialised extraction techniques due to their geological characteristics.
Major Hydrocarbon-Producing Regions in India
| Region/Basin | Significance |
| Mumbai Offshore Basin | Major offshore oil and natural gas production region |
| Assam-Arakan Basin | One of India’s oldest petroleum-producing regions |
| Cambay Basin, Gujarat | Important onshore hydrocarbon-producing basin |
| Krishna-Godavari Basin | Significant offshore natural gas resources |
| Rajasthan (Barmer Basin) | Major onshore crude oil production region |
| Cauvery Basin | Oil and natural gas potential and production |
Important Government Initiatives
1. Hydrocarbon Exploration and Licensing Policy (HELP), 2016
- Introduced a uniform licensing framework for exploration and production of conventional and unconventional hydrocarbons.
- Replaced the earlier New Exploration Licensing Policy (NELP) framework for new exploration blocks.
2. Open Acreage Licensing Programme (OALP)
- Allows companies to identify and propose exploration blocks based on available geological data.
- Operates under the HELP framework.
3. Discovered Small Field (DSF) Policy, 2015
– Encourages commercial development of discovered but previously undeveloped oil and gas fields.
4. Strategic Petroleum Reserves (SPR)
- Developed to provide an emergency buffer against crude oil supply disruptions.
- Implemented through Indian Strategic Petroleum Reserves Limited (ISPRL), under the Ministry of Petroleum and Natural Gas.
Conclusion
Hydrocarbons remain essential to India’s energy security and industrial development. Expanding domestic exploration, diversifying imports and accelerating cleaner energy alternatives are critical to reducing external dependence and strengthening long-term energy resilience.
| This Concept has been discussed in the following article India’s Industrial Growth: Canary in coal mine |