GEOTHERMAL

Utah FORGE starts geothermal production well drilling

The Utah Frontier Observatory for Research in Geothermal Energy (FORGE), funded by the US Department of Energy, has announced that the drilling of its second highly deviated deep well has commenced.

 The Utah FORGE has announced that the drilling of its second highly deviated deep well has commenced

The Utah FORGE has announced that the drilling of its second highly deviated deep well has commenced

This second well will serve as the production well of a two well doublet, and will mirror the existing injection well, which was drilled between October 2020 and February 2021. The new well will be located approximately 300ft from the injection well.

This is a crucial next step in the Utah FORGE project

Like the injection well, the upper part of the well will be drilled vertically through approximately 4550ft of sediments at which point it will penetrate into hard crystalline granite. At about 5600ft, the well will be gradually steered at a five-degree angle for each 100ft until it reaches an inclination of 65 degrees from its vertical point. The total length of the well will be approximately 10,700ft with the "toe" - or the end of the well - reaching a vertical depth of 8265ft. The temperature at this depth will be 440 degrees Fahrenheit (227C).

"This is a crucial next step in the Utah FORGE project's goal of de-risking the tools and technologies required for making Enhanced Geothermal Systems (EGS) technologies commercially viable," Joseph Moore, and principal investigator of Utah FORGE, said. "This new well will serve as the production well. In the future, water will be pumped into the injection well, travel through the reservoir of tiny fractures that we previously opened, absorb the heat from the hard, hot crystalline granite, and then be pumped up through this new production well to the surface. This will help us capture the enormous energy potential beneath our feet and bring low-cost, environmentally green, and renewable energy across the United States."

Once the well is completed, a series of tests will be run to continue facilitating the development of the EGS reservoir and its long-term connectivity. Additional tests will also include determining the stress conditions through short-term injection experiments, during which microseismicity will be carefully monitored.

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