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Grain-Scale Failure in Thermal Spallation Drilling

Geothermal power promises clean, renewable, reliable and potentially widely-available energy, but is limited by high initial capital costs. New drilling technologies are required to make geothermal power financially competitive with other energy sources. One potential solution is ...
Walsh, S. et al Lawrence Livermore National Laboratory
Jan 01, 2012
1 Resources
0 Stars
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Geomechanical Modeling for Thermal Spallation Drilling

Wells for Engineered Geothermal Systems (EGS) typically occur in conditions presenting significant challenges for conventional rotary and percussive drilling technologies: granitic rocks that reduce drilling speeds and cause substantial equipment wear. Thermal spallation drilling,...
Walsh, S. et al Lawrence Livermore National Laboratory
Aug 24, 2011
1 Resources
0 Stars
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Simulation Tools for Modeling Thermal Spallation Drilling on Multiple Scales

Widespread adoption of geothermal energy will require access to deeply buried resources in granitic basement rocks at high temperatures and pressures. Exploiting these resources necessitates novel methods for drilling, stimulation, and maintenance, under operating conditions that ...
Walsh, S. et al Lawrence Livermore National Laboratory
Jan 01, 2012
1 Resources
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Chemical Impact of Elevated CO2 on Geothermal Energy Production

Numerical simulations have shown that the use of supercritical CO2 instead of water as a heat transfer fluid yields significantly greater heat extraction rates for geothermal energy. If this technology is implemented successfully, it could increase geothermal energy production and...
Carroll, S. et al Lawrence Livermore National Laboratory
Jan 01, 2013
3 Resources
0 Stars
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McGee Mountain Transmission Interconnection Feasibility Study

This 2010 study by ZGlobal, Inc. examines possible transmission interconnect opportunities, issues, customers,etc., for the McGee Mountain geothermal system. McGee Mountain is located in T45N, R27E in Humboldt County, northern Nevada. PDF Format, 833 kb file size. Geothermal Techn...
Zehner, R. Geothermal Technical Partners, Inc.
Jun 01, 2010
1 Resources
0 Stars
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McGee Mountain Geoprobe Study, Humboldt County, Nevada

Geoprobes were developed by the environmental industry to collect water, gas and soil samples from contaminated sites at shallow depths (10-40 meters), with a minimum of environmental disturbance. A modified Geoprobe was used to collect bottom hole temperatures, and attempt to col...
Tullar, K. Geothermal Technical Partners, Inc.
Jun 19, 2010
3 Resources
0 Stars
Publicly accessible

Energy Return On Investment of Engineered Geothermal Systems Data

The project provides an updated Energy Return on Investment (EROI) for Enhanced Geothermal Systems (EGS). Results incorporate Argonne National Laboratory's Life Cycle Assessment and base case assumptions consistent with other projects in the Analysis subprogram. EROI is a ratio o...
Mansure, C. Arthur Mansure
Jan 01, 2012
7 Resources
1 Stars
Publicly accessible

Geothermal Exploration Cost and Time Metric

The National Renewable Energy Laboratory (NREL) was tasked with developing a metric in 2012 to measure the impacts of RD&D funding on the cost and time required for geothermal exploration activities. The development of this cost and time metric included collecting cost and time da...
Jenne, S. et al National Renewable Energy Laboratory
Jan 01, 2013
1 Resources
0 Stars
Publicly accessible

Drilling Monitoring Program: Computer Program on Heat Transfer Temperature Distribution Hydraulic Calculations for Abrasive Jet Drilling

A program was created to evaluate the downhole conditions occurring in a FLASH ASJ drilling system. the program is meant to aid the operator of a coiled tubing rig in maintaining optimum drilling conditions.
Ozbayoglu, E. Impact Technologies LLC
Jan 01, 2011
1 Resources
0 Stars
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Active Management of Integrated Geothermal-CO2 Storage Reservoirs in Sedimentary Formations

Active Management of Integrated Geothermal-CO2 Storage Reservoirs in Sedimentary Formations: An Approach to Improve Energy Recovery and Mitigate Risk: FY1 Final Report The purpose of phase 1 is to determine the feasibility of integrating geologic CO2 storage (GCS) with geothermal ...
A., T. Lawrence Livermore National Laboratory
Jan 01, 2012
8 Resources
0 Stars
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Dixie Valley Engineered Geothermal System Exploration Methodology Project, Baseline Conceptual Model Report

The Engineered Geothermal System (EGS) Exploration Methodology Project is developing an exploration approach for EGS through the integration of geoscientific data. The Project chose the Dixie Valley Geothermal System in Nevada as a field laboratory site for methodlogy calibration...
Iovenitti, J. AltaRock Energy Inc
May 15, 2013
2 Resources
0 Stars
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Applications of Geothermally-Produced Colloidal Silica in Reservoir Management Smart Gels

In enhanced geothermal systems (EGS) the reservoir permeability is often enhanced or created using hydraulic fracturing. In hydraulic fracturing, high fluid pressures are applied to confined zones in the subsurface usually using packers to fracture the host rock. This enhances r...
Hunt, J. et al Lawrence Livermore National Laboratory
Jan 31, 2013
2 Resources
0 Stars
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Kinetics of Chlorite Dissolution at Elevated Temperatures and CO2 Conditions

Chlorite dissolution kinetics were measured under far from equilibrium conditions using a mixed-flow reactor over temperatures of 100-275 degrees C at pH values of 3.0-5.7 in a background solution matrix of 0.05 m NaCl. Over this temperature range, magnesium was released congruent...
Carroll, S. et al Lawrence Livermore National Laboratory
Jul 01, 2013
1 Resources
0 Stars
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Geothermal Technologies Program GETEM and LCOE Improvements Review (March 21, 2013)

This file was a report submitted to GTO by Mark Paster, a consultant to the GETEM project, to outline the improvements that were made between summer 2011 and spring 2013. The report focuses on six areas of model improvement: (1) Site Specific Cost Variability; (2) Consistency wi...
Paster, M. Idaho National Laboratory
Mar 21, 2013
1 Resources
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First Results Project Hotspot Drilling

Project Hotspot drilled 3 slim hole exploratory wells in southern Idaho, each just under 2 km deep. These holes were designed to investigate thermal structure in three different settings within the Snake River Volcanic Province: (1) along the axial volcanic high of the central SRP...
Shervais, J. et al Utah State University
Mar 15, 2013
1 Resources
0 Stars
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Project Hotspot Report: Exploration

Project Hotspot applies innovative approaches to geothermal exploration in the Snake River Volcanic Province. This report summarizes results from our Phase 1 data compilation.
Shervais, J. Utah State University
Sep 17, 2010
1 Resources
0 Stars
Publicly accessible

Raft River Geothermal Area Logical and Fact Data Models

This submission includes fact and logical data models for geothermal data concerning wells, fields, power plants and related analyses at Raft River, ID. The fact model is available in VizioModeler (native), html, UML, ORM-Specific, pdf, and as an XML Spy Project. An entity-relatio...
Cuyler, D. Sandia National Laboratories
Jul 19, 2012
7 Resources
0 Stars
Publicly accessible

Ground Source Heat Pump Computational Results

This data submission includes simulation results for ground loop heat pump systems located in 6 different cities across the United States. The cities are Boston, MA, Dayton, OH, Omaha, NE, Orlando, FL, Sacramento, CA, and St. Paul, MN. These results were obtained from the two-dime...
Menart, J. Wright State University
Jul 31, 2013
6 Resources
0 Stars
Publicly accessible

Finite Volume Based Computer Program for Ground Source Heat Pump System Final Scientific Report

The goal of this project was to develop a detailed computer simulation tool for GSHP (ground source heat pump) heating and cooling systems. Two such tools were developed as part of this DOE (Department of Energy) grant; the first is a two-dimensional computer program called GEO2D ...
Menart, J. and Frederick, J. Wright State University
Jul 31, 2013
3 Resources
0 Stars
Publicly accessible

Ground Source Heat Pump Parameter Survey

The purpose of this report is to investigate the effects of various parameters in a horizontal loop geothermal heat pump system. The obtained values include the temperature distribution over the entire system as well as the exiting temperature and bulk heat rate of the fluid. The ...
Gray, E. Wright State University
Jul 31, 2013
1 Resources
0 Stars
Publicly accessible

OM300 Direction Drilling Module

OM300 Geothermal Direction Drilling Navigation Tool A prototype directional drilling navigation tool capable of high temperature operation in geothermal drilling with: Accuracies of 0.1 degree Inclination and Tool Face, 0.5 degree Azimuth Environmental Ruggedness typical of existi...
MacGugan, D. Honeywell International, Inc.
Aug 22, 2013
3 Resources
0 Stars
Publicly accessible

Life Cycle Water Consumption and Water Resource Assessment for Utility-Scale Geothermal Systems: An In-Depth Analysis of Historical and Forthcoming EGS Projects

This report is the third in a series of reports sponsored by the U.S. Department of Energy Geothermal Technologies Program in which a range of water-related issues surrounding geothermal power production are evaluated. The first report made an initial attempt at quantifying the li...
Schroeder, J. et al Argonne National Laboratory
Aug 31, 2013
11 Resources
1 Stars
Publicly accessible

Exploration Best Practices on OpenEI

This is an electronic database detailing different types of, various phases of, best practices for, and cost and time associated with geothermal exploration techniques. The groups of exploration techniques included in the database are Data and Modeling Techniques, Downhole Techniq...
Young, K. National Renewable Energy Laboratory
Sep 20, 2013
2 Resources
0 Stars
Publicly accessible

Exploration Case Studies on OpenEI

The goal of this project was to create a template (and associated form) on OpenEI to solicit crowd-sourced information sharing about various geothermal resource areas around the world. Over the past two years, twelve case studies have been researched by NREL staff testing the usa...
Young, K. National Renewable Energy Laboratory
Sep 27, 2013
2 Resources
0 Stars
Publicly accessible

Chlorite Dissolution Kinetics at Variable pH and Temperatures up to 275C

FY13 annual report describing the calculations and results associated with the data and dissolution rate contained in "Chlorite Kinetic Dissolution Data and Rate" (linked below).
Carroll, S. and Smith, M. Lawrence Livermore National Laboratory
Oct 01, 2013
2 Resources
0 Stars
Publicly accessible
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