Partners in the Exxon Mobil Corp.-led consortium offshore Guyana have increased the resource estimate on the prolific Stabroek Block by another billion barrels to about 9 billion barrels of oil equivalent (Bboe).

Previously, Exxon Mobil and partners Hess Corp. and CNOOC Ltd. had estimated recoverable resources of the Stabroek Block were around 8 Bboe.

Speaking on an earnings call on Oct. 28, Hess Corp. CEO John Hess said up to 10 FPSOs could be needed to develop the resource base on the block where 18 discoveries have been made, the latest of which was the Redtail-1 well in September.

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