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

The latest discovery follows an oil find by Tullow in its Jethro-1 exploration well, in the same area of Guyana, back in August 2019.

UK-headquartered Tullow Oil is the operator of the Orinduik block with a 60% interest. France’s Total holds a 25% stake and Canada-based Eco (Atlantic) Oil & Gas owns the remaining 15% interest.

The Stena Forthdrillship drilled the Joe-1 exploration well to a final depth of 2,175m in about 780m of water. The well encountered 14m of net oil pay in high-quality oil bearing sandstone reservoirs of Upper Tertiary age. The initial interpretation, before drilling, defined more than 12 potential resource targets throughout the total hydrocarbon section.

Tullow Oil exploration director Angus McCoss said: “The Joe-1 discovery and its surrounding prospects represent another area of significant potential in the Orinduik Block and we are greatly looking forward to the next phase of the programme as we continue to unlock the multi-billion barrel potential of this acreage.”

Tullow Oil, along with its partners, will now undertake a detailed assessment of the Jethro, Joe and Hammerhead extension oil reservoirs on the 1800km² Orinduik block.

The Orinduik block is located in shallow water (70m to 1,400m), 170km offshore Guyana in the Suriname Guyana basin. It is situated 11km up-dip from ExxonMobil’s Liza discovery and 6km up-dip from Hammerhead discovery.

Eco Atlantic COO and co-founder Colin Kinley said: “This new discovery in the Upper Tertiary has opened a new play, the first Upper Tertiary discovery in Guyana, throughout our block, just as the Jethro-1 discovery did in the Lower Tertiary section. It has greatly increased our chance of success on our upcoming drilling targets and significantly de-risks other resource not previously considered in our interpretation.”