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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

Sedimentary Geothermal Feasibility in Nevada, Western Utah, Colorado, and the Gulf Coast Region of Texas Final Report

Jul 01, 2020
Size unavailable
Publicly accessible
The objectives of this project were to (1) perform a literature review of sedimentary geothermal resources, (2) identify data sources and develop data-collection methodologies that characterize selected resources, (3) screen sedimentary basins and formations for sedimentary geothe...
Authors
Johnston, H. et al National Renewable Energy Laboratory
geothermalenergysedimentaryfeasibilitysedimentary basinelko basinrailroad valleysteptoe valleypavant buttedenver basinpiceance basinraton basingulf coast regionnevadautahtexasgbcaasgreat basin carbonate and alluvial aquifer systemcarbonateagsadvanced geothermal systembottom-hole temperaturewell datalcoeeconomicsupperlowercarbonate aquifer unitegsenhanced geothermal systemplay fairway analysiscoloradotemperaturebottom-holemarys river basindrillingpermeabilityreservoirmodelingcarbonate geothermal systemcgstechno-economicanalysisdownselectsubsurfacedata mininggeologygradientheatflowgeophysicsseismicclosed-loophydrogeologycoststructuralbedrockmapaquifersedgeo

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