Transocean secures $300 million ONGC contract in India for ultra-deepwater drillship starting in 2027

Transocean just locked in a binding Letter of Award with India’s ONGC for the ultra-deepwater drillship Dhirubhai Deepwater KG2. The deal is worth around $300 million. It covers two years of work, plus mobilization fees and additional services, and it’s set to kick off in Q1 2027.

Transocean awarded $300 million drillship contract by ONGC

Transocean announced the deal directly. It covers a two-year drilling campaign with India’s state-owned energy company, Oil and Natural Gas Corporation. The vessel at the center of it all is the Dhirubhai Deepwater KG2—an ultra-deepwater drillship built for the kind of demanding conditions you find in India’s offshore basins.

Operations are expected to start in the first quarter of 2027, giving both sides roughly two years to sort out logistics and mobilization before drilling begins. The $300 million figure isn’t just for the core drilling work—it bundles in additional services and mobilization fees too.

For ONGC, it secures an ultra-deepwater drillship for continued exploration in the KG basin, in line with India’s push to grow domestic hydrocarbon production.

Contract terms and optional extension periods

The base deal locks in two years of work for the Dhirubhai Deepwater KG2. That’s already a significant commitment from ONGC, but the contract goes further.

Transocean also secured two additional priced option years. ONGC would need to exercise them—they’re not guaranteed—but if both get taken up, the drillship could stay active in Indian waters into early 2031. A potential four-year run in total. For Transocean, having structured extension pathways built into the deal is a meaningful piece of long-term revenue planning, and the $300 million valuation covers the full base contract, including mobilization fees and additional services. Any exercised options would add revenue on top of that.

Significance for Transocean’s offshore drilling backlog

A $300 million contract is a notable addition to any offshore driller’s books. It locks in revenue visibility stretching years into the future—exactly what you need in a capital-intensive industry with long lead times.

Ultra-deepwater drillships sit at the top end of the offshore drilling market. They require advanced engineering, specialized crews, and serious operational infrastructure. That complexity shows up in the day rates these vessels command, which run substantially higher than shallower-water rigs or jackups. The deal also extends Transocean’s footprint in India’s offshore energy sector, and having a named vessel with an established client relationship in a major national market positions the company well if ONGC runs additional campaigns in the region. Continuity in a single market tends to generate follow-on work.

Worth noting: the vessel’s name itself tells you something. The “KG” in Dhirubhai Deepwater KG2 references the Krishna-Godavari basin directly. This drillship has history tied to India’s deepwater frontier.

ONGC’s deepwater exploration activity in India

ONGC is India’s largest upstream oil and gas operator—state-owned, with drilling decisions that carry national strategic weight, not just commercial significance.

The Krishna-Godavari basin, off India’s eastern coast, has been one of the most closely watched deepwater exploration zones in the country for years. Geologically complex, it’s drawn sustained interest from both ONGC and international operators because of its hydrocarbon potential at significant water depths. India has been actively pushing to expand offshore drilling activity, with the broader goal of reducing dependence on imported hydrocarbons by growing domestic production. Ultra-deepwater work in basins like the KG basin fits squarely into that strategy.

For ONGC specifically, ultra-deepwater operations in the KG basin have been a recurring strategic focus. Contracting a dedicated drillship for a multi-year campaign signals continued commitment to that exploration agenda—not a one-off effort.

A meaningful difference in revenue terms

Here’s what this deal comes down to. Transocean has a binding two-year contract for the Dhirubhai Deepwater KG2, worth around $300 million including mobilization fees and additional services, with drilling starting in Q1 2027.

Two priced option years are also included. If ONGC exercises both, the drillship stays busy in India through early 2031—turning a two-year deal into a potential four-year engagement. That’s a meaningful difference in revenue terms.

For Transocean, the award adds long-term backlog and keeps the company active in a key offshore market. For ONGC, it secures an ultra-deepwater drillship for continued exploration in the KG basin, in line with India’s push to grow domestic hydrocarbon production. The deal is structured, time-bound, and tied to a specific vessel and geography — a concrete signal of where both companies are placing their bets in the years ahead.

Kelly Lippke

Kelly is an experienced writer with 15 years of experience exploring the big stories that shape our world, from tech breakthroughs and space exploration to climate, energy, and the fascinating quirks of science. She has a talent for turning complex ideas into sharp, memorable insights that stay with readers long after they’ve finished reading.