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COMSOL Models and Simulation Results for Closed-Loop Geothermal Systems with Thermal Enhancements

Dec 15, 2023
91.3 MB
Publicly accessible
The Closed-Loop Geothermal Working Group and the National Renewable Energy Laboratory (NREL) have studied the performance of disc-shaped and linear thermal enhancements (conductive material introduced around a wellbore) in closed-loop geothermal systems. COMSOL models were develop...
Authors
Beckers, K. et al National Renewable Energy Laboratory
geothermalenergythermal enhancementscosmolsimulationmodelclosed-loopsteady-statetransientsimulation resultsassessmentclosed loop geothermal

Northwestern Michigan College Formation Thermal Conductivity Test Report

Jul 31, 2025
1.68 MB
Publicly accessible
This report summarizes a formation thermal conductivity test performed July 29-31, 2025 on a579-ft vertical bore at Northwestern Michigan College in Traverse City, Michigan. It describes the test setup, operating conditions, data acquisition procedures, calibration details, and bo...
Authors
Streich, G. Northwestern Michigan College
geothermalwell databorethermal conductivitythermal conductivity testgeothermal boreholevertical closed-loop systemline-sourceloop temperaturethermal diffusivityundistrurbed formation temperaturedrilling logdistrict heating and coolingprocessed datatechnical reportashraecalibrationclosed loop geothermal

GLADE Project: Pre-Feasibility Economic Evaluation by National Lab of the Rockies

Aug 28, 2026
1.96 MB
Publicly accessible
The Geothermal Limitless Approach to Drilling Efficiencies (GLADE) project was undertaken in Denver-Julesburg (DJ) Basin Colorado to evaluate whether advanced oil and gas drilling practices could be adapted to improve geothermal well construction in deep, hot, hard-rock environmen...
Authors
Mibei, G. et al OXY USA Inc.
geothermalenergyeconomic evaluationdj basincoloradogladetechno-economicclosed-loopegsfeasibilitythermophysicaldrilling costlcoe sensitivity