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Shimela‑1 in the South Omo Block, onshore Ethiopia, was drilled to test a prospect in a north-western sub‑basin of the vast Chew Bahir basin. The frontier wildcat well encountered lacustrine and volcanic rocks including almost 100 metres of net sandstone reservoir within siltstones and clay stones. Trace thermogenic gas shows were recorded at 1,900 metres.
The Exalo 205 rig drilled Shimela‑1 to a final depth of 1,940 metres. The rig will now be moved to drill the Gardim‑1 wildcat exploration well in a completely separate sub‑basin, in the south-eastern corner of the Chew Bahir basin.
Tullow operates the South Omo Block with 50% equity and is partnered by Africa Oil Corporation (30%) and Marathon Oil Ethiopia Limited B.V. (20%), a wholly owned subsidiary of Marathon Oil Corporation (NYSE: MRO).
ANGUS MCCOSS, EXPLORATION DIRECTOR, TULLOW OIL PLC, COMMENTED TODAY:
“Although the Shimela well only found traces of thermogenic gas, it has provided key data to continue to build our understanding of the north-western part of the Chew Bahir basin. The prospectivity at the Gardim‑1 well, which is targeting an independent petroleum system in a separate south-eastern sub‑basin, is not affected by this result.”
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Tullow is an independent energy company that is building a better future through responsible oil and gas development in Africa. Tullow's operations are focused on its core producing assets in Ghana. Tullow is committed to becoming Net Zero on its Scope 1 and 2 emissions by 2030, with a Shared Prosperity strategy that delivers lasting socio-economic benefits for its host nations. The Group is quoted on the London and Ghanaian stock exchanges (symbol: TLW). For further information, please refer to: www.tullowoil.com.
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