Top 5 Highest Crude Oil Producing States in India

Crude oil is not just a key source of energy but also a major driver of India’s economy. With industrialization and modernization, the energy demand grows and the production of crude oil increases to meet this demand. As the world shifts its focus towards sustainable energy, crude oil remains a key player in the energy landscape of India. Some of the states in India have emerged as top producers of crude oil in India. In 2025, India’s top crude oil-producing states are not only central to the nation’s energy output but also reflect the progress of Infrastructure development in the sector.

1. Rajasthan

Rajasthan is the biggest producer of crude oil in India; it contributes nearly 23-25 per cent of crude oil in India. The major oil field of the state are Barmer Basin of Rajasthan is the established as top crude oil production in India. Mangala, Bhagyam and Aishwariya fields of the basin are the largest producers of crude oil.  Oil and Natural Gas Corporation (ONGC) and Cairn India (Vedanta) have played pivotal roles in the development of these fields. Rajasthan’s contribution to national production has continued to rise due to ongoing development and enhanced recovery techniques.

2. Gujarat

Gujarat takes the second place as the largest crude oil producer in India. The state contributes to nearly 20 – 22 of the crude oil in the country. Ankleshwar, Cambay Basin, Gandhar, and Kalol are the major oil fields of the state. The state is rich in both onshore and offshore oil fields, with the Cambay Basin being the most prominent. Gujarat has been a major contributor to India’s energy sector for decades, and new technological innovations and exploratory efforts continue to push its production capacity forward.

3. Assam

The third largest producer of crude oil in India is Assam. Assam contributes to national production of approximately 15 -18 per cent. The major fields of crude oil in Assam are Digboi, Duliajan, Naharkatia, and Rudrasagar. Assam has the longest history of oil production dating back to the 19th century when the Digboi oil field was discovered.  While some of the fields are mature, the use of enhanced oil recovery (EOR) techniques has ensured continued production from Assam’s aging fields. The role of Assam in crude oil production is significant in India.

4. Tamil Nadu

Tamil Nadu contributes to 10 per cent of total crude oil production in India. The major oil field of Tamil Nadu is the Cauvery Basin which consists of Palk Bay, Kaveri, and Nagapattinam fields. The Cauvery Basin region has a unique geological structure that holds several small yet significant oil fields. The potential for discoveries remains high, with exploratory activities continuing along the Cauvery delta and offshore areas. ONGC is conducting discovery activities in the region and has made several discoveries in the basin, including an oil discovery at Kamalapuram in Thanjavur district.

5. Andhra Pradesh

The last state on our list of the major crude oil producers in India is Andhra Pradesh. Andhra Pradesh contributes to 6 per cent of national crude oil production in the country. This basin covers almost 52,000 sq km and has a total hydrocarbon resource base of 1,130 million metric tonnes. Krishna – Godavari Basin of Andhra Pradesh is known for both its oil and gas reserves. The offshore KG Basin is one of the most promising areas for future growth in India’s crude oil production. With exploratory drilling and development projects underway, Andhra Pradesh could see an increase in its contribution to the nation’s overall production in the coming years.

Conclusion

While India still relies heavily on imports to meet its crude oil requirements, these five states—Rajasthan, Gujarat, Assam, Tamil Nadu, and Andhra Pradesh—play a critical role in domestic production. Rajasthan is the highest producer of crude oil because of its vast onshore reserves, while Gujarat and Assam continue their long-standing contributions. Tamil Nadu and Andhra Pradesh, with their growing offshore exploration, are vital to India’s future energy security. With increased investment in exploration and the implementation of advanced technologies like Enhanced Oil Recovery (EOR), India hopes to bolster domestic production further in the years to come.