ExxonMobil starts production at Yellowtail

Production from Yellowtail’s One Guyana FPSO joins Destiny, Unity, and Prosperity FPSO production to bring total installed capacity in Guyana to more than 900,000 bo/d

Alex Procyk

Aug. 8, 2025

Key Highlights

· ExxonMobil started production at Yellowtail, the fourth oil development in Guyana’s offshore Stabroek block.

· By 2030, ExxonMobil expects to have total production capacity of 1.7 MMboe/d from eight developments.

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ExxonMobil Guyana Ltd. started production at Yellowtail, the fourth oil development in Guyana’s offshore Stabroek block. Production from Yellowtail’s One Guyana floating production storage and offloading (FPSO) vessel joins Destiny, Unity, and Prosperity FPSO production to bring total installed capacity in Guyana to more than 900,000 bo/d (OGJ Online, Aug. 1, 2025).

One Guyana is the largest FPSO on Stabroek block to date with an initial annual average production of 250,000 bo/d and storage capacity of 2 MMbbl (OGJ Online, April 17, 2025). Oil produced from the FPSO will be marketed as Golden Arrowhead crude.

By 2030, ExxonMobil Guyana expects to have total production capacity of 1.7 MMboe/d from eight developments.

ExxonMobil Guyana Ltd. is operator of the block with 45% interest. Partners are Hess Guyana Exploration Ltd. (30%) and CNOOC Petroleum Guyana Ltd. (25%).

About the Author

Alex Procyk

Upstream Editor

Alex Procyk is Upstream Editor at Oil & Gas Journal. He has also served as a principal technical professional at Halliburton and as a completion engineer at ConocoPhillips. He holds a BS in chemistry (1987) from Kent State University and a PhD in chemistry (1992) from Carnegie Mellon University. He is a member of the Society of Petroleum Engineers (SPE).