ExxonMobil Greenlights $12.5B Longtail Development Offshore Guyana

ExxonMobil has made a final investment decision (FID) for the Longtail gas and condensate development offshore Guyana following government and regulatory approvals, with an additional investment of $12.5 billion planned and production targeted to start in 2030.

Longtail will be the eighth development in the Stabroek block, targeting non-associated gas and condensate-rich reservoirs in the southeastern portion of the block.

The project will use a floating production, storage and offloading (FPSO) vessel designed to process 1.2 billion standard cubic feet of gas per day and produce up to 250,000 barrels of condensate daily.

Earlier in 2026, ExxonMobil Guyana hired SBM Offshore to carry out front-end engineering and design (FEED) studies for the FPSO vessel that will be deployed at Longtail.

This story was originally published by Offshore Engineer. Read the full story at Offshore Engineer →