GEO ExPro

Exploration Update - Guyana

ExxonMobil announce fifth discovery offshore Guyana.
This article appeared in Vol. 14, No. 6 - 2017

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Map showing location of the Turnot-1 & Liza-1 wells in the south-eastern portion of the Starbroek Block in the Guyana-Suriname Basin. ExxonMobil announced on 5 October 2017 that it had made its fifth discovery offshore Guyana with the Turbot-1 new field wildcat. Located in the south-eastern portion of the Stabroek Block in the Guyana-Suriname Basin, the well, which was drilled to 5,622m in a water depth of 1,802m, encountered a 23m-thick reservoir of high-quality, oil-bearing sandstone in the primary objective.

Turbot-1 is about 50 km south-east of the Liza field and was targeting a similar stratigraphic play type. It was spudded on 14 August 2017 and a follow-up well is now planned for next year. The discovery means that gross recoverable resources for the Stabroek Block, which includes the Liza, Liza Deep, Snoek and Payara discoveries, are likely to rise above the current estimate of 2.25–2.75 Bboe. ExxonMobil is currently undertaking a 3D/4D survey covering a broad swath of the Stabroek Block, which is due to be completed in early November 2017. It is expected that around 2,215 km2 will be acquired, focused around and north-west of the Liza, Payara and Snoek discoveries.

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