UPDATE AT 12:55 ON 1OTH MARCH 2022 The seismic event which occurred at approximately 9.20pm on 9th March was induced by injection testing at Eden Geothermal. These tests have been ongoing since late January and have involved injecting fresh water into the natural fractures near the bottom of the well. Injection testing induces low level […]
General
Reports of felt seismicity
We are aware that a seismic event was felt and heard in the vicinity of the Eden Geothermal site shortly after 9.20pm this evening. An investigation and analysis of seismic monitoring data have confirmed that the event was linked to testing operations at Eden Geothermal. No damage has been reported, and the event was within […]
Well testing at Eden Geothermal
We’re currently in a phase of testing our first geothermal well. Well tests provide us with essential information about the temperature and permeability of the rock in our target zone, and how water moves through the hot granite deep underground. The results of our tests will enable us to characterise the geothermal resource, and to […]
Geothermal heat main installation begins
Work has started on the installation of the new heat main that will supply Eden Project’s Biomes, greenhouses and other buildings with geothermal heat. The heat main consists of two 150mm (6”) steel pipes – a flow and return – each encapsulated in a thick layer of insulation to a total diameter of 280mm. They […]
Eden Geothermal hot rocks project hits target with successful drilling of first well
We announce a landmark moment today – the successful completion of our first geothermal well nearly 5km into the Earth’s crust. EG-1 has a vertical depth of 4,871 m (just over 3 miles). Its measured depth – the actual length of the well – is 5,277 metres (nearly 3.3 miles), making it the longest geothermal […]
Cornwall and Isles of Scilly Growth Programme video showcases low carbon energy projects
Cornwall and Isles of Scilly Growth Programme has provided £70m of ERDF funding to support innovative energy projects in the geothermal, wind, floating offshore wind and organic waste sectors. The Eden Geothermal Project is one of these. Find out more about the projects, and how they will help Cornwall meet its 2030 Net Zero Carbon […]
We’re drilling our final 8 ½” section
Having successfully run and cemented casing in the 12¼” section of EG-1, we’re now into the final 8 ½” open hole section. The bits are grinding the granite to powder – as this cuttings sample from 4050m shows. Current depth is 4324m MD and we expect to intersect Great Crosscourse fault soon. The Eden Project […]
‘Drilling break’ a positive sign for project
Last week we encountered a ‘drilling break’ at 3949m. This is a great sign for the future of our project – the increased ROP (rate of penetration) and losses of drilling muds into the formation are indicators of a zone of natural fracturing and permeability in the rock. Heat and permeability are the prerequisites for […]
Drilling reaches 3755m
We’ve now drilled to 3755m MD so are approaching the end of the 12¼“ section of EG-1. At 4000m, we’ll be tripping out of the hole to run and cement casing (in other words to line this section), before embarking on the final section of the well, and the last part of our journey towards […]
