Publications

browse utah forge project publications

2025 Publications

Peter NIEMZ, Kris PANKOW, Marius P. ISKEN, Katherine WHIDDEN, John MCLENNAN, Joseph MOORE. “Mapping Fracture Zones with Nodal Geophone Patches: Insights from Induced Microseismicity During the 2024 Stimulations at Utah FORGE“. Link
James RUTLEDGE, Kristine PANKOW, Peter NIEMZ, Ben DYER, Dimitrios KARVOUNIS. “Microseismic Source Mechanisms During a Utah FORGE Injection Stimulation.” Link
Kristine PANKOW, Ben DYER, James RUTLEDGE, Dimitrios KARVOUNIS, Peter NIEMZ, Katherine WHIDDEN, Peter MEIER, Paul JAQUES, Gesa PETERSEN, David EATON, Julie SHEMETA, Joe MOORE. “Lessons from Utah FORGE for Seismic Monitoring of Engineered Geothermal Systems.” Link
Clay JONES, Stuart SIMMONS, Joseph MOORE. “Characterization of Drill Core from Stimulated Crystalline Rock Following Hydraulic Fracturing at the Utah FORGE Geothermal Test Site.” Link
Stuart SIMMONS, Mark ROCKHOLD, Rebecca KREUZER. “Sustaining Hot Spring Activity in the Vicinity of Geothermal Developments.” Link
Pengju XING, Kevin ENGLAND, Joseph MOORE, John MCLENNAN. “Analysis of the 2024 Circulation Tests at Utah FORGE and the Response of Fiber Optic Sensing Data.” Link
Pengju XING, Eric EDELMAN, Carlos VEGA-ORTIZ, Clay JONES, Stephen DEOREO, Mitch STARK, Justin WRIEDT, John MCLENNAN. “Evaluation of Drilling Performance at the Geysers with Machine Learning Methods Using Geologic Data.” Link
Lynn MUNDAY, Aleta FINNILA, Robert PODGORNEY. “Thermo-Hydraulic Modeling of Long-Term Circulation Tests at the Utah FORGE Site.” Link
Hafssa TOUNSI, Branko DAMJANAC, Zorica RADAKOVIC-GUZINA, Wei FU, Aleta FINNILA, Pengju XING, Robert PODGORNEY. “A Coupled Hydro-Mechanical Analysis of Impact of DFN on Reservoir Stimulation at FORGE.” Link

2024 Publications

Clay JONES, Stuart SIMMONS, Joseph MOORE. “Geology of the Utah Frontier Observatory for Research in Geothermal Energy (FORGE) Enhanced Geothermal System (EGS) Site”. Link
Peter NIEMZ, John MCLENNAN, Kristine L. PANKOW, James RUTLEDGE, Kevin ENGLAND. “Circulation experiments at Utah FORGE: Near-surface seismic montitoring reveals fracture growth after shut-in.” Link
Pengju XING, Kevin ENGLAND, Joseph MOORE, Robert PODGORNEY, John MCLENNAN. “Analysis of Circulation Tests and Well Connections at the Utah FORGE.” Link
Aleta FINNILA, Clay JONES. “Updated Reference Discrete Fracture Network Model at Utah FORGE.” Link
Stuart SIMMONS, Clay JONES, Stefan KIRBY, Phil WANNAMAKER, Kris PANKOW, Joseph MOORE. “The Interplay of Impermeable Crystalline Basement Rocks, Tectonic Fracturing and Magmatic Intrusion in the Development of Geothermal Resources at Utah FORGE and Roosevelt Hot Springs.” Link
Wei FU, Branko DAMJANAC, Zorica RADAKOVIC-GUZINA, Aleta FINNILA, Robert PODGORNEY, John MCLENNAN. “Near-Wellbore DEM Model of Hydraulic Fracture Initiation for Utah FORGE.” Link
Peter ROSE, John MCLENNAN, Clay JONES, Stuart SIMMONS, Kevin ENGLAND. “Tracer Testing in Well 16B-32 at the Utah FORGE EGS Project.” Link
Lynn MUNDAY, Robert PODGORNEY. “Numerically Testing Conceptual Models of the Utah FORGE Reservoir Using July 2024 Circulation Test Data.” Link
Zorica RADAKOVIC-GUZINA, Branko DAMJANAC, wei FU, Aleta FINNILA, Rob PODGORNEY, John MCLENNAN. “Coupled Hydro-Mechanical Back-Analysis of Circulation Program at FORGE in July 2023.” Link
Mark MCCLURE, Rohan IRVIN, Kevin ENGLAND, John MCLENNAN. “Numerical Modeling of Hydraulic Stimulation and Long-Term Fluid Circulation at the Utah FORGE Project.” Link
Sarah SAUSAN, Marshall HARTUNG, Jiann-cherng SU, Melanie SCHNEIDER, Andrew WRIGHT, Roland HORNE. “Updates of the Development of Chloride-based Wireline Tool for Measuring Feed Zone Inflow in Enhanced Geothermal Systems (EGS).” Link
Ahmad GHASSEMI, Zhi YE, Mudi RATNAYAKE. “The Role of Thermo-poroelastic Effects on Transverse Fractures in the Utah FORGE Well 16-A.” Link
Sang H. LEE, Ahmad GHASSEMI, Jonathan AJO-FRANKLIN, Matt BECKER. “Numerical Modeling of Stimulation and Circulation in Utah FORGE Wells.” Link
Zhi YE, Ahmad GHASSEMI. “The Updated Wellbore Stress Models for Utah FORGE.” Link
Andres VELASQUEZ, Alberto VELAZCO, Jorge Andres ESCOBAR, Khizar ABID, Yosafat ESQUITIN, Ricardo VASQUES, Leonardo ROCHA DE QUEIROZ, Catalin TEODORIU. “Design and Experimental Validation of a Unique Geothermal Downhole Valve for FORGE Project.” Link
Uwaila IYARE, Luke FRASH, Bijay K C, Meng MENG, Kayla KROLL, Megan SMITH, Gabriela DAVILA, James CAREY, Wenfeng LI, Oana MARINA, Yerkezhan MADENOVA. “Measurements of Thermo-Hydro-Mechanical-Chemical Coupling in Granite Shear Fractures at FORGE Using the Triaxial Direct-Shear Test Method.” Link
Fan FEI, Chaoyi WANG, Matteo CUSINI, Luke FRASH, Kayla KROLL. “Modeling of Diagnostic Fracture Injection Tests (DFITs) for In-situ Stress Characterization in the Utah FORGE Reservoir.” Link

2023 Publications

Pengju XING, Branko DAMJANAC, Zorica RADAKOVIC-GUZINA, Maurilio TORRES, Aleta FINNILA, Robert PODGORNEY, Joseph MOORE, John MCLENNAN. “Comparison of Modeling Results with Data Recorded During Field Stimulations at Utah FORGE Site.” Link
Benjamin WILLIS, Robert PODGORNEY. “Thermal Hydraulics Evaluation of Fluid Flow Distribution in a Multi-Stage Stimulated Enhanced Geothermal System Wellbore at the Utah FORGE Site.” Link
Katherine WHIDDEN, Gesa PETERSEN, Kristine PANKOW. “Seismic Monitoring of the 2022 Utah FORGE Stimulation: the View from the Surface.” Link
Stuart SIMMONS, Stefan KIRBY. “Mantle Helium in Cold Ground Water in the North Milford Valley and the Implications for Geothermal Resources at Roosevelt Hot Springs and the Utah FORGE EGS Field Site.” Link
Robert PODGORNEY, Lynn MUNDAY, Jerry LIU, Wen Jiang, Aleta FINNILA, Branko DAMJANAC, Pengju XING, Zorica RADAKOVIC-GUZINA. “Thermal-Hydraulic-Mechanical (THM) Modeling of Fluid Flow and Heat/Tracer Transport Between Injection and Production Wells at the Utah FORGE Site.” Link
Clay G. JONES, Kevin ENGLAND, Stuart SIMMONS, Peter ROSE, Michael MELLA, Benjamin BARKER, John MCLENNAN, Joseph MOORE. “Stimulation, Tracers and Geochemistry at Utah FORGE.” Link
Aleta FINNILA, Branko DAMJANAC, Robert PODGORNEY. “Development of a Discrete Fracture Network Model for Utah FORGE Using Microseismic Data Collected During Stimulation of Well 16A(78)-32.” Link

2022 Publications

Daniel WELLS, Fan-Chi LIN, Kristine PANKOW, Ben BAKER, John BARTLEY. “Combining Dense Seismic Arrays and Broadband Data to Image the Subsurface Velocity Structure in Geothermally Active South-Central Utah.” Link
Alex DZUBAY, Maria MESIMERI, Katherine M. WHIDDEN, Daniel WELLS, Kris PANKOW. “Developing a comprehensive seismic catalog using a matched-filter detector during a 2019 stimulation at Utah FORGE.” Link
Sang H. LEE, Ahmad GHASSEMI. “Numerical Simulation of Fluid Circulation in Hydraulically Fractured Utah FORGE Wells.” Link
Pengju XING, Andy WRAY, Edgar Ignacio Velez ARTEGA, Aleta FINNILA, Joseph MOORE, Clay JONES, Erik BORCHARDT, John MCLENNAN. “In-situ Stresses and Fractures Inferred from Image Logs at Utah FORGE.” Link

2021 Publications

Aleta FINNILA, Thomas DOE, Robert PODGORNEY, Branko DAMJANAC, Pengju XING. “Revisions to the Discrete Fracture Network Model at Utah FORGE Site” Geothermal Resources Council Transactions. Link
Aleta FINNILA. “Estimation of Fracture Size for a Discrete Fracture Network Model of the Utah FORGE Geothermal Reservoir Using Forward Modeling of Fracture-Borehole Intersections.” Link
Junichi SUGIURA, Ramon LOPEZ, Francisco BORJAS, Steve JONES, John MCLENNAN, Duane WINKLER, Matt STEVENSON, Jordan SELF. “Oil and Gas Drilling Optimization Technologies Applied Successfully to Unconventional Geothermal Well Drilling.” Link
Pengju XING, John MCLENNAN, Joseph MOORE. “Minimum in-situ stress measurement using temperature signatures.” Link
Stuart F. SIMMONS, Rick G. ALLIS, Stefan M. KIRBY, Joseph N. MOORE, Tobias P. FISCHER. “Interpretation of hydrothermal conditions, production-injection induced effects, and evidence for enhanced geothermal system- type heat exchange in response to >30 years of production at Roosevelt Hot Springs, Utah, USA.” Link
Pengju XING, Branko DAMJANAC, Joseph MOORE, John MCLENNAN. “Flowback Test Analyses at the Utah Frontier Observatory for Research in Geothermal Energy (FORGE) Site.” Link
Robert PODGORNEY, Aleta FINNILA, Stuart SIMMONS, John MCLENNAN. “A Reference Thermal-Hydrologic-Mechanical Native State Model of the Utah FORGE Enhanced Geothermal Site.” Link
Maria MESIMERI, Kristine L. PANKOW, Ben BAKER, Mark HALE. “Episodic Earthquake Swarms in the Mineral Mountains, Utah Driven by the Roosevelt Hydrothermal System.” Link
Maria MESIMERI, Kristine L. PANKOW, James RUTLEDGE. “A Frequency-Domain-Based Algorithm for Detecting Microseismicity Using Dense Surface Seismic Arrays.” Link
Pengju XING, Branko DAMJANAC, Zorica RADAKOVIC-GUZINA, Aleta FINNILA, Robert PODGORNEY, Joseph MOORE, John MCLENNAN. “Numerical Simulation of Injection Tests at Utah FORGE Site.” Link
Stuart SIMMONS. Geothermal Resources. “Encyclopedia of Geology (2nd Ed).” Elsevier, p. 708-722. Link
Maria MESIMERI, Kristine PANKOW, William BARNHART, Katherine WHIDDEN, Mark HALE. “Unusual Seismic Signals in the Sevier Desert, Utah Possibly Related to the Black Rock Volcanic Field.” Link
Hao ZHANG, Kristine PANKOW. “High-resolution Bayesian spatial autocorrelation (SPAC) quasi-3-D Vs model of Utah FORGE site with a dense geophone array.” Link
John MCLENNAN. “Drilling FORGE Well 16A(78)-32: Advancing the EGS Agenda.” Link
Pengju XING, Duane WINKLER, Leroy SWEARINGEN, Joseph MOORE, John MCLENNAN. “In-Situ Stresses and Permeability Measurements from Testings in Injection Well 16A(78)-32 at Utah FORGE Site.” Link
Pengju XING, Branko DAMJANAC, Zorica RADAKOVIC-GUZINA, Aleta FINNILA, Robert PODGORNEY, Joseph MOORE, John MCLENNAN. “Numerical Investigation of Stimulation from the Injection Well at Utah FORGE Site.” Link

2020 Publications

Pengju Xing, John MCLENNAN, Joseph MOORE. “In-Situ Stress Measurements at the Utah Frontier Observatory for Research in Geothermal Energy (FORGE) Site.” Energies 13.21 (2020): 5842. Link
Joseph MOORE. “The Utah FORGE: An International Laboratory for Advancing Enhanced Geothermal Development.” Link
Aleta FINNILA, Robert PODGORNEY. “Exploring Hydraulic Fracture Stimulation Patterns in the FORGE Reservoir Using Multiple Stochastic DFN Realizations and Variable Stress Conditions”. Link
Joseph MOORE, John MCLENNAN, Kristine PANKOW, Robert PODGORNEY, Stuart SIMMONS, Phil WANNAMAKER, Clay JONES, William RICKARD, Ben BARKER, Christian HARDWICK, Stefan KIRBY. “Overview of Utah Forge Results in 2019”. Link
Kristine PANKOW, Maria MESIMERI, John McLENNAN, Joe MOORE. “Seismic Monitoring at the Utah Frontier Observatory for Research in Geothermal Energy”. Link
Robert PODGORNEY, Aleta FINILA, Ahmad GHASSEMI, John MCLENNAN, Joseph MOORE. “Reference Native State and Stimulation Models of the Utah FORGE Site”. Link
Stuart F. SIMMONS, Stefan KIRBY, Rick ALLIS, Joe MOORE. “Production Chemistry Evidence for an EGS-type Reservoir in Roosevelt Hot Springs and Implications for Utah FORGE”. Link
Philip E. WANNAMAKER, Stuart F. SIMMONS, John J. MILLER, Christian L. HARDWICK, Ben A. ERICKSON, Steve D. BOWMAN, Stefan M. KIRBY, Kurt L. FEIGL and Joseph N. MOORE. “Geophysical Activities Over the Utah FORGE Site at the Outset of Project Phase 3”. Link
Pengju XING, Duane WINKLER, Bill RICKARD, Ben BARKER, Aleta FINNILA, Ahmad GHASSEMI, Kristine PANKOW, Robert PODGORNEY, Joseph MOORE, John MCLENNAN. “Interpretation of In-Situ Injection Measurements at the FORGE Site”. Link
Seismological Society of America: Link
Maria MESIMERI, Kristine L. PANKOW. “A frequency-domain-based algorithm for detecting induced seismicity using dense surface N-arrays”.
Kristine L. PANKOW, Keith D. KOPER, Relu BURLACU, Ben BAKER, James C. PECHMANN, Jamie FARRELL, James HOLT. “The University of Utah Seismograph Stations: A Multifaceted Regional Earthquake Center”.
Amy S. RECORD, Maria MESIMERI, Kristine L. PANKOW. “Earthquake clustering in southcentral Utah”.

2019 Publications

Utah Geological Survey Bulletin: The area around the FORGE site is among the most intensely studied portions of the Basin and Range. In support of the FORGE project, a significant amount of new information has been collected. The results of these studies will be of use to scientists investigating a broad range of geological, geochemical, geophysical topics as well as those interested in EGS development. The Utah Geological Survey volunteered to produce publication that captured the results of research at the Utah FORGE site during Phase 2B, 2018. Fourteen papers have been contributed to this special publication. Link
Aleta FINNILA, Bryan FORBES, Robert PODGORNEY. “Building and Utilizing a Discrete Fracture Network Model of the FORGE Utah Site”. Link
Amirhossein KAMALI, Ahmad GHASSEMI, John MCLENNAN, Joseph MOORE. “Analysis of Forge DFIT Considering Hydraulic and Natural Fracture Interactions”. Link
Dharmendra KUMAR, Ahmad GHASSEMI. “Multistage Hydraulic Fracturing of EGS with Application to Forge”. Link
Robert MELLORS, Christopher SHERMAN, Pengcheng FU, John MCLENNAN, Joseph MORRIS, Frederick RYERSON, and Christina MORENCY. “Potential Use of Distributed Acoustic Sensors to Monitor Fractures and Micro-seismicity at the FORGE EGS Site”. Link
Joseph MOORE, John McLENNAN, Rick ALLIS, Kristine PANKOW, Stuart SIMMONS, Robert PODGORNEY, Philip WANNAMAKER, William RICKARD. “The Utah Frontier Observatory for Research in Geothermal Energy (FORGE): an International Laboratory for Enhanced Geothermal System Technology Development”. Link
Siavash NADIMI, Bryan FORBES, Joseph MOORE, Zhi YE, Ahmad GHASSEMI, and John MCLENNAN. “Experimental Evaluation of Effect of Hydro-Shearing on Fracture Conductivity at the Utah FORGE Site”. Link
Robert PODGORNEY, Aleta FINNILA, John MCLENNAN, Ahmad GHASSEMI, Hai HUNAG, Bryan FORBES, Janina Elliott. “A Framework for Modeling and Simulation of the Utah FORGE Site”. Link
William M. RICKARD, John MCLENNAN, Nasikul ISLAM, Ernesto RIVAS. “Mechanical Specific Energy Analysis of the FORGE Utah Well”. Link
Stuart SIMMONS, Stefan KIRBY, John BARTLEY, Clay JONES, Emily KLEBER, Tyler KNUDSEN, John MILLER, Kristen RAHILLY, John McLENNAN, Tobias FISCHER, Joseph MOORE, Rick ALLIS. “Update on the Geological and Geochemical Understanding of the Utah FORGE Site”. Link
T.J, KNEAFSEY, P.F. DOBSON, J.B. AJO-FRANKLIN, Y. GUGLIELMI, C.A. VALLADAO, D.A. BLANKENSHIP, P.C. SCHWERING, H.A. KNOX, M.D. WHITE, T.C. JOHNSON, C.E. STRICKLAND, V.R. VERMUEL, J.P. MORRIS, P. FU, E. MATTSON, G.H. NEUPANE, R.K. PODGORNEY, T.W DOE, L. HUANG, L.P. FRASH, A. GHASSEMI, W. ROGGENTHEN, The EGS Collab team. “EGS Collab Project: Status, Tests, and Data”. Link

2018 Publications

Rick Allis, Mark Gwynn, Christian Hardwick, and Joseph Moore. The Challenge of Correcting Bottom-Hole Temperatures – an Example from FORGE 58-32, Near Milford, Utah. Link
Ozgur Balamir, Ernesto Rivas, William M. Rickard, John McLennan, Mary Mann, and Joseph Moore. Utah FORGE Reservoir: Drilling Results of Deep Characterization and Monitoring Well 58-32. Link
Stuart F. Simmons, Joseph Moore, Rick Allis, Stefan Kirby, Clay Jones, John Bartley, Emily Kleber, Tyler Knudsen, John Miller, Christian Hardwick, Kristen Rahilly, Mark Gwynn, John McLennan, Bryan Forbes, Rob Podgorney, Kris Pankow, Phil Wannamaker and Tobias Fischer. A revised geoscientific model for FORGE Utah EGS Laboratory. Link
Stuart F. Simmons, Stefan Kirby, Rick Allis, Joe Moore, and Tobias Fischer. Update on Production Chemistry of the Roosevelt Hot Springs Reservoir. Link

2017 Publications

Bruce S. Sibbett and Dennis L. Nielson. Geologic map of the central Mineral Mountains, Beaver County, Utah. GIS reproduction of 1980 map, 42 p., 2 pl., scale 1:24,000, ISBN 978-1-55791-942-7, Utah Geological Survey Misc. Publication, 17-2DM. Link
Kleber, E., Hiscock, A., Kirby, S., Allis, R., 2017, Assessment of Quaternary Faulting near the Utah FORGE Site from Airborne Light Detection and Ranging (lidar) Data: Geothermal Resources Council Transactions. 41: 301-302. Link
Kleber, E.., Kirby, S., Hiscock, A.I., and Bowman, S., 2017, Preliminary assessment of Quaternary faulting based on high resolution topographic data near the FORGE geothermal site, Mineral Mountains, Utah, USA: Proceedings for the 8th international INQUA Meeting on Paleoseismology, Active Tectonics and Archaeoseismology (PATA), 12 – 15 November, 2017, New Zealand.
Pankow, K. L., Potter, S. Zhang, H., Moore, J., 2017, Local Seismic Monitoring at the Milford, Utah FORGE Site: Geothermal Resources Council Transactions. 41: 304-312. Link
Simmons, S., Kirby, S., Rahilly, K., Fischer, T., Moore, J., 2017, Update on the Geochemistry and Geohydrology of the FORGE Deep Well Site, Milford, Utah: Geothermal Resources Council Transactions. 41: 313. Link
Tiwari, S., Simmons, S., McLennan, J., 2017, A 2D HYDROTHERM Model of the Utah FORGE Site: Geothermal Resources Council Transactions. 41: 314. Link