April 15, 2025 [Storage Terminals Magazine]- Perenco has announced the successful completion of the United Kingdom’s first carbon dioxide injection test for Carbon Capture and Storage, a landmark achievement for both Project Poseidon and the UK’s broader decarbonisation agenda.
The test involved injecting CO₂ into a depleted natural gas reservoir in the Southern North Sea, demonstrating the technical viability of repurposing existing hydrocarbon infrastructure for carbon storage. Conducted by the Project Poseidon Joint Venture—comprising Perenco UK, Carbon Catalyst Ltd, and Harbour Energy—the operation was carried out from Petrodec’s ERDA rig, the first in the UK to obtain an approved safety case for CO₂ injection support. With the rig now departed from the Leman 27H platform, the test phase has formally concluded.
Over the course of the programme, 15 injection cycles were successfully completed into the Leman gas field, supported by 11 offshore CO₂ batch refills. The operation was delivered safely and on schedule, without injection issues, and resulted in the acquisition of an exceptional dataset—paving the way for further technical and regulatory progress in CCS.
The successful outcome not only validates the potential for carbon storage in depleted Southern North Sea fields, but also highlights the cost-efficiency benefits of reusing legacy petroleum production infrastructure. The test was the result of a collaborative effort across multiple stakeholders in the energy, CCS, and service sectors, coordinated through the Perenco UK–Petrodec–Dixstone partnership.
Perenco expressed optimism that the project will bolster confidence in the UK’s CCS industry, assist in shaping regulatory frameworks, and help establish technical benchmarks for future carbon storage initiatives.
Armel Simondin, CEO of Perenco, commented:
“This test has met our expectations, both in terms of technical execution and the quality of data gathered. These insights are instrumental as we move to the next phase of developing the Poseidon Project. The successful test highlights the role our industry can play in the UK’s decarbonisation efforts. The Perenco CCS team and our joint venture partners are now fully focused on interpreting the results and converting new insights into an evidence-based development plan for Project Poseidon.”
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