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and about two km east of the north–south trending Opal Mond Fault (OMF), perpendicular to the east–west trending Negro Mag Fault (NMF). FORGE is dominated by a fault-fracture mesh system with OMF as one of its most active features. Fault structures vary from steeply dipping faults west of the
Mineral
104:
More than 80 shallow gradient wells (<500 m depth) and 20 deeps wells (>500 m depth) were drilled. Analyses from the shallow well data reported that the encountered granitic rocks were not producing fluids, but were hot. A lack of fluid production indicated these rocks are impermeable and that
83:
The reservoir is located approximately between 1,525 and 2,896 meters (~5,000-10,000 ft) depth in which temperature ranges from 175 to 225 °C. The rock is aged from 8 Ma to 25.4 Ma. Roosevelt Hot
Springs (RHS) to the east is a hydrothermal area with temperatures ranging from about
120:
The primary well descends vertically 6,000 feet (1.8 km), then continues 5,000 feet (1.5 kilometers) at a 65 degree angle. The well employed a diamond-tipped bit, cutting drilling costs by 20 percent.
23:. The FORGE site is near Milford, Utah, funded for up to $ 140 million. As of 2023, numerous test wells had been drilled, and flux measurements had been conducted, but energy production had not commenced.
568:
Allis, Rick; Moore, Joe; Davatzes, Nick; Gwynn, Mark; Hardwick, Christian; Kirby, Stefan; McLennan, John; Pankow, Kris; Potter, Stephen; Simmons, Stuart (February 22–24, 2016).
379:
Moore, Joseph; McLennan, John; Pankow, Kristine; Simmons, Stuart; Podgorney, Robert; Wannamaker, Philip; Jones, Clay; Rickard, William; Xing, Pengju (February 10–12, 2020).
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system. The thermal grounds cover most of the northern
Milford valley. The highest temperature wells (greater than 80 °C) are located east of the OMF above the RHS
473:
544:
Aleinikoff, J. N.; Nielson, D. L.; Hedge, C. E.; Evans, S. H. (1986). "Geochronology of
Precambrian and Tertiary rocks in the Mineral Mountains, south-central Utah".
404:
Moore, Joseph; McLennan, John; Allis, Rick; Pankow, Kristine; Simmons, Stuart; Podgorney, Robert; Wannamaker, Philip; Bartley, John; Jones, Clay; Rickard, William.
381:"The Utah Frontier Observatory for Research in Geothermal Energy (FORGE): A Laboratory for Characterizing, Creating and Sustaining Enhanced Geothermal Systems"
117:
are similar in central, southern and western sectors at roughly 70 °C per km and do not exceed 270 °C, even at higher temperature wells to the west.
406:"The Utah Frontier Observatory for Research in Geothermal Energy (FORGE): An International Laboratory for Enhanced Geothermal System Technology Development"
630:
196:
210:
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C at the surface to over 250 °C at a depth of roughly 4000 meters (13,123.4 ft). These temperatures indicate the presence of cooling
640:
335:"Carbon Dioxide Flux and Carbon and Helium Isotopic Composition of Soil Gases Across the FORGE Site and Opal Mound Fault, Utah"
164:
106:
635:
489:"Evidence for the generation of juvenile granitic crust during continental extension, Mineral Mountains Batholith, Utah"
36:
625:
110:
76:
52:
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211:"Department of Energy Selects University of Utah Site for $ 140 Million Geothermal Research and Development"
339:
Geothermal
Characteristics of the Roosevelt Hot Springs System and Adjacent FORGE EGS Site, Milford, Utah
298:
Geothermal
Characteristics of the Roosevelt Hot Springs System and Adjacent FORGE EGS Site, Milford, Utah
249:
Geothermal
Characteristics of the Roosevelt Hot Springs System and Adjacent FORGE EGS Site, Milford, Utah
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35:(DOE) announced the intent to establish "a dedicated subsurface laboratory" to investigate and develop
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428:"Magmatic, structural, and hydrothermal evolution of the Mineral Mountains intrusive complex, Utah"
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197:"Energy Department Announces $ 29 Million Investment in Enhanced Geothermal Systems Efforts"
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242:"Quaternary Geology of the Utah FORGE Site and Vicinity, Millard and Beaver Counties, Utah"
598:
93:
504:
443:
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Standford
University in Standford CA, 41st Workshop on Geothermal Reservoir Engineering
39:. In June 2018 DOE funded a location outside of Milford, Utah for up to $ 140 million.
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Workshop on
Geothermal Reservoir Engineering Stanford University, Stanford, California
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Workshop on
Geothermal Reservoir Engineering Stanford University, Stanford, California
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NIELSON, DENNIS L.; EVANS, STANLEY H., JR.; SIBBETT, BRUCE S. (1986-06-01).
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Knudsen, Tyler; Kleber, Emily; Hiscock, Adam; Kirby, Stefan M. (2019).
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521:
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570:"EGS Concept Testing and Development at the Milford, Utah FORGE Site"
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291:"Revised Mapping of Bedrock Geology Adjoining the Utah FORGE Site"
89:
165:"A Vast Untapped Green Energy Source Is Hiding Beneath Your Feet"
333:
Rahilly, Kristen; Simmons, Stuart; Fischer, Tobias P. (2019).
17:
Frontier Observatory for Research in Geothermal Energy (FORGE)
599:"Thermal Characteristics of the FORGE site, Milford, Utah"
452:
10.1130/0016-7606(1986)97<765:MSAHEO>2.0.CO;2
113:
system. Near-surface profiles (less than 80 m depth) of
55:
transition zone. It is primarily composed of intrusive
80:
Mountains to more gently steeping faults to the east.
199:. Washington, DC: Department of Energy. Aug 31, 2016.
143:"DOE Announces Notice of Intent for EGS Observatory"
141:
Geothermal Technologies Office (February 21, 2014).
19:
is a US government program supporting research into
579:. SGP-TR-209: 13 – via Pangea.Standford.edu.
487:Coleman, Drew S.; Walker, J. Douglas (1992).
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493:Journal of Geophysical Research: Solid Earth
472:: CS1 maint: multiple names: authors list (
75:sedimentary rocks. The site is west of the
606:Geothermal Resources Council Transactions
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105:the site is a classic example of a
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47:The site is located along the
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546:US Geological Survey Bulletin
641:2018 establishments in Utah
37:enhanced geothermal systems
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289:Kirby M., Stefan (2019).
63:batholith emplaced into
53:Basin and Range Province
31:In February 2014, the
597:Allis, Rick (2018).
215:Department of Energy
115:temperature gradient
33:Department of Energy
636:Beaver County, Utah
505:1992JGR....9711011C
499:(B7): 11011–11024.
444:1986GSAB...97..765N
107:hot dry rock energy
300:. pp. 12–19.
626:Geothermal energy
513:10.1029/92JB00653
347:10.34191/mp-169-i
306:10.34191/MP-169-A
257:10.34191/mp-169-b
163:Barber, Gregory.
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21:geothermal energy
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180:. Retrieved
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147:the original
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111:hydrothermal
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65:Precambrian
620:Categories
522:1808/17129
360:2021-11-08
319:2021-11-08
270:2021-11-08
182:2023-08-10
125:References
531:2156-2202
460:0016-7606
355:204269519
314:204256632
265:204250666
177:1059-1028
73:Paleozoic
57:Oligocene
608:. 42–15.
100:Research
59:through
552:: 1–12.
501:Bibcode
440:Bibcode
390:: 1–10.
220:9 March
61:Miocene
27:History
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71:) and
69:Gneiss
602:(PDF)
573:(PDF)
409:(PDF)
384:(PDF)
351:S2CID
310:S2CID
294:(PDF)
261:S2CID
245:(PDF)
169:Wired
94:crust
90:magma
550:1622
527:ISSN
474:link
456:ISSN
222:2020
173:ISSN
51:and
43:Site
517:hdl
509:doi
448:doi
343:doi
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253:doi
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