Why the US Gulf matters to Harbour Energy
$3.2 billion acquisition of LLOG Exploration marked Harbour’s strategic entry into the Gulf of America
Active in one of the world’s most prolific basins, adding a high-margin, oil-weighted deepwater portfolio
Production targeted to reach between 65 and 70 kboep by 2028, with further growth in 2030 and beyond
In the deepwater US Gulf, some of the world’s most complex - and highest-value - oil and gas developments are taking shape.
This is a key region where Harbour is building for the long-term. Through the February 2026 acquisition of LLOG Exploration, Harbour combines high-quality assets, a proven team and a fully operated, oil-weighted portfolio.
More than 350 mmboe of reserves and resources, alongside over half a billion barrels of prospective resource, provide substantial running room in this prolific basin.
At the heart of Harbour’s US position are three established hubs: Buckskin, Leon–Castile and Who Dat.
Buckskin: quality and quantity
The Buckskin development was delivered at a quarter of the budgeted cost using half the planned wells - a standout example of capital efficiency.
Using subsea tiebacks to existing infrastructure, the team has brought four wells online, with a fifth expected in 2026. Ranked among the top ten producing wells in the US Gulf in 2022, Buckskin is capable of producing up to 30 kboed – enough energy to power 10 large data centres a year.
Salamanca: a masterclass in reinvention
Salamanca under construction
At the Leon–Castile hub, Salamanca represents a different way of delivering offshore projects.
By repurposing an existing floating production facility rather than building a new one, the project reduced emissions by 87% while accelerating time to first production.
Salamanca in operation
Operating in water depths of more than 6,000 feet, Salamanca enables the efficient co-development of multiple deepwater discoveries across the Leon–Castile area.
This first-of-its-kind facility uses human ingenuity to cut cost and emissions.
Who Dat: proven, with room to grow
The Who Dat hub is a cornerstone of the portfolio — a long-established deepwater system connected to multiple subsea wells and tiebacks. It has produced over 150 mmboe and maintained 94% uptime since first production in 2011.
With a second rig set to arrive by the end of 2026, high-return drilling activity is expected to increase. In the first half of 2025, Who Dat produced around 14 kboepd – a city’s worth of energy, energy to power approximately 400,000 US homes each year.
Our best asset yet
Behind the assets is the LLOG team, which has drilled more than 300 wells since 2002 and delivered around a third of discoveries in the US Gulf since 2014.
Now part of Harbour, that expertise strengthens the company’s ability to unlock value and operate safely in a complex offshore environment.
With Harbour's expansion into the US Gulf, the priorities remain clear: safe production, building reserves and resources while maintaining rigorous capital discipline.
Find out more about our US Gulf operations.