ExxonMobil issues FID for Hammerhead project offshore Guyana

The $6.8-billion project calls for a new FPSO and 18 production and injection wells.
Sept. 22, 2025
2 min read

ExxonMobil has made the final investment decision (FID) for the $6.8-billion Hammerhead field development project offshore Guyana, after receiving the required regulatory approvals.

Hammerhead, the seventh project on the Stabroek block, is anticipated to come online in 2029.

The development will utilize an FPSO vessel and calls for 18 production and injection wells, with a capacity to produce approximately 150,000 barrels of oil per day.

“We continue to set a new standard in Guyana – advancing an impressive seventh project just 10 years after first discovery,” said Dan Ammann, President of ExxonMobil Upstream Company. “In collaboration with the people and government of Guyana, we’ve helped build a thriving new oil-and-gas industry in the country that is creating jobs, supplier opportunities, profits and follow-on investments.”

ExxonMobil says that this latest decision increases funds committed for seven approved projects to more than $60 billion. 

ExxonMobil says that it is currently producing approximately 650,000 barrels of oil per day from the Stabroek block. With the recent successful startup of a fourth FPSO, ONE GUYANA, the company anticipates growing production to more than 900,000 barrels of oil per day by the end of the year. 

Construction is underway for the fifth and sixth approved projects, Uaru and Whiptail, with Uaru anticipated to start production in 2026, and Whiptail is anticipated for startup in 2027. 

As reported by Reuters, citing the Guyanese government, associated gas from Hammerhead will be transferred to a pipeline network for a gas-to-energy project. The goal is to use surplus gas produced from Hammerhead for local power generation within Guyana. 

Exxon operates the Stabroek Block with a 45% interest. Its partners Chevron and CNOOC hold 30% and 25%, respectively.

About the Author

Bruce Beaubouef

Managing Editor

Bruce Beaubouef is Managing Editor for Offshore magazine. In that capacity, he plans and oversees content for the magazine; writes features on technologies and trends for the magazine; writes news updates for the website; creates and moderates topical webinars; and creates videos that focus on offshore oil and gas and renewable energies. Beaubouef has been in the oil and gas trade media for 25 years, starting out as Editor of Hart’s Pipeline Digest in 1998. From there, he went on to serve as Associate Editor for Pipe Line and Gas Industry for Gulf Publishing for four years before rejoining Hart Publications as Editor of PipeLine and Gas Technology in 2003. He joined Offshore magazine as Managing Editor in 2010, at that time owned by PennWell Corp. Beaubouef earned his Ph.D. at the University of Houston in 1997, and his dissertation was published in book form by Texas A&M University Press in September 2007 as The Strategic Petroleum Reserve: U.S. Energy Security and Oil Politics, 1975-2005.

Sign up for our eNewsletters
Get the latest news and updates