ExxonMobil lets FEED contracts for Guyana’s Longtail project FPSO

ExxonMobil Guyana Ltd., an affiliate of ExxonMobil Corp., has let contracts to SBM Offshore, to perform front end engineering and design (FEED) studies for a floating production, storage and offloading vessel (FPSO) for the Longtail development project offshore Guyana.

The FEED contracts award triggers the initial release of funds by ExxonMobil Guyana Ltd. to begin FEED activities and allocate a hull for the Longtail development project, SBM Offshore said in a release Mar. 24. 

SBM Offshore will further construct and install the FPSO, subject to government approvals of the development plan, final investment decision by ExxonMobil, and project approval to release the second phase of work.

The FPSO will be designed to process 1,200 MMcfd of gas and produce 250,000 b/d of condensate. The FPSO will be spread moored in water depth of about 1,750 m and will be able to store around 2 million bbl of condensate.

SBM Offshore is expected to operate the FPSO, while its ownership is expected to be transferred to ExxonMobil at the end of the construction period and before start of operations.

ExxonMobil discovered Longtail in 2018, encountering 265 ft of high-quality, oil-bearing sandstone following drilling of the Longtail-1 well, adding to potential development of the southeast area of the Stabroek block. If sanctioned, Longtail would be ExxonMobil's eighth development in Guyana’s Stabroek block. 

As of November 2025, the operator was producing 900,000 b/d from the block following the ramp-up of its Yellowtail development to full capacity. Production capacity from eight developments is expected to reach 1.7 million bbl of oil by 2030.