RE: Could this be the date of Orinduik Approvals4 Feb 2026 13:21
Hadn’t seen these numbers before until I asked Google the potential of oil in Jethro . With Hammerhead 445 million barrels and $24.28 a barrel profit after costs and production costs. Anywhere near 20% of this will be amazing.
The Jethro and Joe wells, located in the Orinduik Block offshore Guyana, discovered heavy, sulfurous crude oil in 2019. While initially perceived as a major light-oil breakthrough, subsequent analyses confirmed the oil is heavy and contains high sulfur, similar to crude found in the North Sea, Gulf of Mexico, and Brazil.
Here are the details on the potential of each:
Jethro Well (Jethro-1): Drilled in July 2019, it encountered 55 meters of net pay in a high-quality Lower Tertiary sandstone reservoir. It is estimated to hold approximately 622 million barrels (mmbbls) of oil in place.
Joe Well (Joe-1): Drilled in September 2019, it encountered 14–16 meters of net pay in Upper Tertiary oil-bearing sandstone. It is estimated to hold 508 mmbbls of oil in place (pre-drill estimate).
Key Findings on Oil Potential:
Quality: The oil is heavy and sour (high sulfur), which makes it more difficult to develop and less valuable than the light, sweet crude found in nearby blocks.
Commerciality: Due to the heavy nature of the oil, the commercial viability was questioned in 2019. However, as of late 2025, partners (including Eco Atlantic) are reviewing development options for these heavy oil finds, motivated by other nearby projects, such as ExxonMobil's Hammerhead project, proving such heavy oil can be developed.
Remaining Potential: Despite the lower-value crude at these specific spots, the discoveries proved the presence of a working petroleum system in the Tertiary play, and the operators have continued to explore for lighter oil in the deeper Cretaceous, similar to the nearby Stabroek block.
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