UK-based oil and gas company Tullow Oil has made a light cretaceous oil discovery at the Carapa-1 exploration well on the Kanuku licence, offshore Guyana, in partnership with Repsol and Total.

Repsol Exploración Guyana is the operator of the Kanuku block, with a 37.5% stake while Tullow Guyana holds a 37.5% stake and Total E&P Guyana owns the remaining 25% interest.

The well has encountered around 4m of net oil pay based on preliminary analysis. This extends the Cretaceous play into the group’s Guyana acreage.

Tullow Oil chief operating officer Mark MacFarlane said: “The Carapa-1 result is an important exploration outcome with positive implications for both the Kanuku and Orinduik blocks. While net pay and reservoir development at this location are below our pre-drill estimates, we are encouraged to find good quality oil which proves the extension of the prolific Cretaceous play into our acreage.”

Tullow Oil said that the jack-up Valaris EXL drilled the well to a total depth of 3,290m, in 68m of water.

The company said that it will plug the well and abandon it. It will follow this with detailed laboratory analysis of the oil quality.

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By GlobalData

According to Eco Atlantic, the latest discovery at Kanuku licence reaffirms cretaceous age light oil prospects on the Orinduik Block offshore Guyana, which is located between the Liza field and the Carapa-1 discovery.

Eco Atlantic owns 15% working interest (WI), Tullow Guyana holds 60% WI and Total E&P Guyana owns 25% WI in the Orinduik Block.

Eco Atlantic chief operating officer Colin Kinley said: “The Carapa discovery is very important to us technically and confirms our thinking on prospectivity on our Orinduik block.

“We have a proven source kitchen to the North, with ExxonMobil and partners having defined and now producing 32 API at the Liza field to the North of us, and now a 27 API oil discovery on Carapa to the South of us. We continue to gain a good understanding of the transportation and pooling systems, and we can see the reservoirs clearly in the cretaceous.”

In September, Tullow Oil made a second oil discovery on the Orinduik license, after the Joe-1 exploration well opened a new upper tertiary oil play in the Guyana basin