Drilling nearly three miles into the ground at temperatures well over two times the boiling point of water, geothermal company Fervo Energy said it has set several records with its deepest and hottest well to date.
The Houston-based company on June 10 said its Sugarloaf appraisal well, part of Fervo’s Cape Station geothermal development in Utah, reached a true vertical depth of 15,765 ft with projections to reach a bottomhole temperature of 520 F. The well was drilled in 16 days, nearly 80% faster than the U.S. Department of Energy’s baseline for ultradeep geothermal wells, the company said.
Geothermal energy involves drilling wells into hot reservoirs to capture heat that can be converted into electricity, providing baseload power. Enhanced geothermal systems (EGS), such as those used by Fervo, lean on proven techniques and technologies used in oil and gas. The energy source is seen as a route to lower carbon emissions while meeting rising energy demand, if developers are able to bring down costs and successfully scale.