Shell Offshore Inc. has reached a final investment decision (FID) on a waterflood project at its Kaikias field in the U.S. Gulf of America — a move aimed at increasing extractable oil volumes and extending the life of Shell’s Ursa platform in the prolific Mars Corridor.
Waterflooding, a secondary oil recovery method, involves injecting water into an oil reservoir to displace trapped crude and drive it toward production wells, while simultaneously restoring pressure to maintain output rates.
The company expects first injection to commence in 2028.
The Kaikias Waterflood Project marks a significant step in Shell’s long-term strategy to maximise high-margin production from existing infrastructure in its core deepwater operations.
“Following our decision to increase our stake in Ursa earlier this year, this additional investment continues to maximise the value of the asset,” said Peter Costello, Shell’s Upstream President.
“It also contributes to our aim of maximising high-margin production and longevity in a core basin to maintain liquids production.”
The Ursa Tension Leg Platform (TLP), located roughly 209 km off the coast of Louisiana, serves as a central hub within Shell’s Mars Corridor, one of the company’s most productive offshore areas.
The Kaikias field, discovered in 2014 at a water depth of about 1,219 metres, began producing in 2018, with flowback to the Ursa platform.
The FID underlines Shell’s emphasis on leveraging established assets to extract more value from existing reservoirs.
Industry estimates suggest the Kaikias waterflood could lift recoverable reserves by around 60 million metric barrels of oil equivalent (mmboe), classified as “2P” (proved plus probable) under the Society of Petroleum Engineers’ Petroleum Resources Management System.
By extending the field’s production life, the project is expected not only to prolong Ursa’s operational viability by several years but also to enhance resource efficiency in one of Shell’s key upstream regions.
Shell remains the leading deepwater operator in the U.S. Gulf of Mexico, accounting for nearly 20 per cent of total regional oil output.
The Gulf is a critical part of Shell’s global production portfolio, with assets such as Mars, Olympus, and Appomattox forming the backbone of its deepwater operations.
According to Shell, its Gulf of Mexico facilities also boast some of the lowest greenhouse gas (GHG) intensity levels among deepwater producers worldwide — averaging roughly 6 to 8 kilograms of CO₂ equivalent per barrel of oil equivalent, compared to the global upstream average of over 17 kgCO₂e/boe.
The company’s continued investment in the Mars Corridor aligns with its “Powering Progress” strategy, which aims to balance shareholder returns with responsible energy production and lower-carbon operations.
Shell operates Ursa with a 61.3484 per cent working interest, alongside partners BP Exploration & Production Inc. (22.6916 per cent) and ECP GOM III, LLC (15.96 per cent).
Earlier this year, Shell announced the acquisition of additional working interest in Ursa, further consolidating its position in the asset.
With the latest waterflood investment, Shell strengthens its upstream presence in a mature yet still resource-rich basin, while maintaining focus on advancing efficiency and reducing carbon intensity.
In recent years, Shell has also progressed other deepwater enhancement projects, including the Vito and Whale developments, both optimised for cost efficiency and lower emissions.
The company has emphasised that modernisation and reduced offshore emissions are essential to keeping its U.S. Gulf portfolio competitive in the global market.
By capitalising on existing assets like Ursa and Kaikias, Shell is positioning itself to sustain production volumes even as it pursues a more balanced, lower-carbon portfolio globally.
The Kaikias Waterflood Project serves as part of that dual approach: reinforcing profitability while investing in energy transition pathways.
