ONGC Launches First Deepwater Drilling in Mahanadi Basin

Bhubaneswar, India Jul 27, 2026 ALN: State-owned Oil and Natural Gas Corporation (ONGC) on Saturday (July 25, 2026) commenced drilling its first deepwater exploratory well in the Mahanadi offshore basin, marking the start of an ambitious campaign to tap India's deep and ultra-deepwater hydrocarbon resources. This initiative is particularly significant as it aligns with the government’s broader strategy to enhance domestic energy production and reduce reliance on imported fuels, which has been a pressing concern for the country. The need for energy security has been underscored by the increasing demand for energy as India continues to grow economically, and the reliance on energy imports has made the nation vulnerable to fluctuations in global markets.

ONGC spudded exploratory well MN-DW18-1-H-D under the government's Samudra Manthan mission, a program aimed at revitalizing the country’s oil and gas exploration sector. The term "Samudra Manthan," which translates to "churning of the ocean," is a metaphor drawn from Indian mythology, symbolizing the extraction of valuable resources from the depths of the sea. The initiative seeks to harness the vast, untapped hydrocarbon potential of India’s offshore fields, which are critical for meeting the nation’s growing energy demands. The Mahanadi basin, which has been historically underexplored, is now seen as a promising area for hydrocarbon extraction, particularly in light of recent technological advancements and improved geological understanding.

The well is being drilled around 23 nautical miles from the Konark discovery off the Odisha coast, building on ONGC's recent Utkal and Konark discoveries that have strengthened the hydrocarbon prospectivity of the Mahanadi Offshore Basin. The Mahanadi basin, which has been historically underexplored, is now seen as a promising area for hydrocarbon extraction, particularly in light of recent technological advancements and improved geological understanding. The geological formations in this region have shown promise, and the recent discoveries have provided a more favorable outlook for future exploration efforts.

The drilling campaign forms part of the push to accelerate exploration of India's offshore oil and gas reserves. In his Independence Day address on August 15, 2025, Prime Minister Narendra Modi had called for harnessing the country's untapped offshore hydrocarbon potential, emphasizing the need for self-reliance in energy production. This call to action reflects a broader national strategy aimed at ensuring energy security and fostering economic growth through increased domestic production of oil and gas. The government recognizes that energy independence is not just a matter of securing resources but also a critical factor in maintaining economic stability and achieving sustainable development.

In line with that vision, the government has opened nearly one million square kilometres of previously restricted offshore areas for exploration. This move is expected to pave the way for fresh acreage to be offered under upcoming rounds of the Open Acreage Licensing Policy (OALP), which allows companies to bid for exploration rights in designated areas. The OALP is part of the government’s efforts to attract private and foreign investment in the exploration sector, thereby boosting domestic production capabilities. The initiative is designed to create a more competitive environment in the energy sector, encouraging innovation and efficiency among companies involved in exploration and production.

India's eastern and western offshore basins, extending to water depths of up to 3,000 metres, are estimated to hold more than 5,600 million metric tonnes of oil equivalent (MMTOE) of hydrocarbon resources. These estimates highlight the significant potential for new discoveries that could transform the country’s energy landscape. The government’s proactive approach to exploration is critical, as it seeks to capitalize on these resources before global energy dynamics shift further towards renewable sources. The transition to renewable energy is essential for addressing climate change, but the immediate need for traditional energy sources remains high, necessitating a balanced approach to energy policy.

Recent exploration successes in the Cauvery, Mahanadi and Andaman basins have further strengthened the outlook for offshore exploration, according to the statement. These successes not only validate the geological potential of these regions but also build investor confidence in the Indian offshore sector. The cumulative effect of these developments is expected to lead to increased production, job creation, and technological advancements within the industry. As more companies enter the market, competition will likely drive innovation, leading to more efficient extraction techniques and better environmental practices.

To support the deepwater exploration programme, ONGC in January this year launched its flagship Deepwater Exploration Mission Centre, DeepX, in Mumbai. The centre integrates the company's geoscientific expertise, advanced interpretation capabilities, specialized training, and global collaborations under its "One Company, One Data" philosophy. This initiative is designed to enhance operational efficiency and foster innovation in deepwater exploration, which is often fraught with technical challenges due to the harsh marine environment. The establishment of such a center demonstrates ONGC's commitment to advancing its capabilities in deepwater drilling, which is essential for the success of the current campaign.

The company said the commencement of drilling marks the beginning of one of India's most challenging deepwater exploration campaigns, aimed at boosting domestic oil and gas production, reducing import dependence, and strengthening the country's energy security. The challenges of deepwater drilling include extreme water depths, high pressure, and the need for advanced technology and equipment, all of which require significant investment and expertise. The complexities involved in deepwater drilling operations necessitate a careful approach, including thorough risk assessments and the implementation of best practices to ensure safety and environmental protection.

The statement from ONGC emphasized that "the commencement of drilling marks the beginning of one of India's most challenging deepwater exploration campaigns. Every prospect evaluated, well drilled, and discovery made will contribute towards enhancing domestic production, reducing import dependence, and strengthening India's energy security and self-reliance." This sentiment underscores the critical role that successful exploration plays in shaping India's energy future and achieving the government’s strategic goals. The success of these initiatives could not only bolster energy security but also position India as a significant player in the global energy market.

As India continues to grow economically, the demand for energy is expected to rise correspondingly. The country’s reliance on energy imports has been a longstanding issue, making it vulnerable to global market fluctuations. By investing in offshore exploration, India aims to secure a more stable and reliable energy supply, which is essential for sustaining its economic growth and development. The ongoing exploration efforts are not merely about increasing production but also about ensuring that India can meet its energy needs sustainably and responsibly.

In conclusion, the launch of ONGC's deepwater drilling campaign in the Mahanadi Basin represents a significant step forward in India's quest for energy independence. It reflects a commitment to exploring and utilizing domestic resources while also addressing the challenges posed by a rapidly changing global energy landscape. The success of this initiative could have far-reaching implications, not only for India's energy security but also for its economic stability and growth prospects in the years to come. As the nation navigates the complexities of energy production and consumption, the outcomes of such initiatives will be closely watched, both domestically and internationally, as they could set a precedent for future exploration and energy policies.