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GRC Workshops

Two GRC Workshops have been confirmed at the GRC Annual Meeting in Salt Lake City, Utah, USA.

Friday & Saturday, September 29 & 30

Geothermal Resource Decision Workshop 2
~ William Cumming, Nick Hinz, and Pete Stelling

Saturday, September 30

Operations & Maintenance
~ Kevin Kitz and Dan Hoyer

Geothermal Resource Decision Workshop 2

Friday & Saturday, September 29 & 30

Room: Salt Palace Convention Center                8am - 5pm
Cost: $550 (Members); $600 (Non-Members); $175 (Students)

William Cumming, Nick Hinz, and Pete Stelling

The 2017 GRC Geothermal Resource Decision Workshop 2 extends the successful 2016 GRC workshop on building realistic geothermal resource conceptual models to support decision risk assessments of well targeting and resource capacity, but focuses on both preliminary evaluation and the use of more detailed geoscience and engineering data available from wells to support field operations decisions. The experience of the 2016 workshop will be summarized to provide context for the integration of rock cuttings analysis, fluid geochemistry and well test results to support decisions on well design, real-time well completion and success/failure assessment at the appraisal stage following an exploration success in a >240°C volcano-hosted resource. Lectures on preliminary geoscience evaluation of <180°C fault-hosted prospects will support an exercise that will simulate a geothermal lease auction.

Like the 2016 workshop, this workshop will consist of about 50% lectures directed at the decision issues and 50% team exercises in making decisions using real data and testing them against outcomes. The teams will be assisted by coaches experienced in geothermal resource decision making. This workshop is directed at geoscientists, engineers and managers who wish to better appreciate how geothermal resource data sets and their uncertainty are used to support resource decisions.

Lectures include:

  • Review 2016 GRC workshop on using surface geoscience data to build geothermal conceptual models and update them using well results to assess resource capacity and well targets for exploration and appraisal decisions
  • Geochemistry of surface manifestations and wells and relevance to resource conceptual models, well design and production design
  • Geothermal well design criteria for <180°C and >230°C based on surface exploration data
  • Geothermal well logs, well tests, multi-well reservoir interference tests and key engineering and geoscience data and performance criteria
  • Well cuttings analyses and formation and alteration interpretation to validate conceptual models and make drilling decisions for >240°C volcano-hosted reservoirs
  • Structure and formation controls for <180°C deep circulation geothermal reservoirs
  • Ranking “hidden” <180°C deep circulation geothermal prospects based on geological and structural constraints and data priorities for well targeting building conceptual models

Interspersed with the lectures are exercises where participants will:

  • Evaluate geology, geochemistry and geophysics data to build resource conceptual models
  • Use conceptual models to complete a resource capacity and well target risk assessment
  • Design an initial exploration well and criteria for setting well casing based on cuttings
  • Make real-time production casing decisions based on cuttings and well tests
  • Make appraisal well targeting decisions based on updated conceptual models from well tests, production geochemistry and geology
  • Make development capacity decisions based on well interference tests, production geochemistry and geology
  • Rank a suite of <180°C deep circulation geothermal prospects based on geological and structural constraints. Decide data priorities for resource assessment. Build a bidding strategy, including work programs.
  • Bid for <180°C deep circulation geothermal prospects in an auction competing with other teams and assess outcomes relative to known results.

Although participants will be encouraged to group themselves with others who have complementary skills to support the exercises, sufficient expert coaches will be available to guarantee effective progress regardless of participants’ backgrounds. This workshop will be supported by a team of veteran geothermal geoscientists and engineers, each with worldwide experience in geothermal exploration and development and providing training and coaching in related skills.

At the completion of this workshop, participants should expect to understand the basic components and construction of a geothermal resource conceptual model, the rationale for its use in prospect evaluation, well targeting and capacity assessment, and the process of making basic resource decisions based on more detailed geoscience and engineering data sets obtained from wells.

Tentative list of speakers and coaches:

William Cumming, Cumming Geoscience
Richard Gunderson, Consultant
Nick Hinz, Nevada Bureau of Mines and Geology
John Murphy, Geothermal Science
Sabodh Garg, Leidos
Jill Haizlip, Geologica
Elisabeth Easley, Thermochem

Pete Stelling, Western Washington University
Dave Boden, Truckee Meadow Community College
Joe Moore, Energy & Geoscience Institute
Dick Benoit, Sustainable Solutions
Max Wilmarth, Geologica
Glenn Melosh, Consultant

Lunches included.

Registration for this special workshop is available with GRC Annual Meeting registration. You do not have to be registered for any other event. Attendees are invited to a special GRC Workshop Reception on Friday evening from 5:00pm-6:30pm..

Operations & Maintenance

Saturday, September 30

Room: Salt Palace Convention Center                8am - 5pm
Cost: $300; $175 (Students)


Operations & Maintenance (O&M) is critical to the sustainable success of geothermal power plants, facilities and wells. Sharing lessons learned within the industry can help improve the bottom line of every operating plant, and potentially make new plants more competitive with natural gas, wind and solar alternatives.

You are invited to share approaches and solutions that have made a difference in your work as a O&M supervisors, leads, staff or engineer.

Attendees will have the opportunity to present for 10-20 minutes, preferably using PowerPoint slides. Participants will then be able to discuss their own approach and experiences  in finding a solution to the issue.

The vision is that participants take away many ideas that could add value to their own work-place O&M practices.

Possible Topics:

  • Capacity/availability improvements
  • Turnarounds: Planning and Budget
  • Turbine/equipment refurbishments
  • Scale or corrosion control
  • Work Orders:  Management
  • Predictive maintenance                  
  • Vibration Monitoring
  • Inspections for safety and reliability
  • Fuel supply monitoring and well drilling/workover decision processes
  • O&M Costs
  • Production Well Pumps:  Issues with Submersibles and Line Shafts
  • NCG purging from binary plants
  • Materials (metals, elastomers, etc.)
  • Equipment upgrade successes
  • Safety and Environmental

Lunch included.

Registration for this special workshop is available with GRC Annual Meeting registration. You do not have to be registered for any other event. Attendees are invited to a special GRC Workshop Reception on Friday evening from 5:00pm-6:30pm..

Check back here for more information in the coming months.......

In the last decade alone the GRC has provided over 50 days of educational workshops:

2006 - Emerging High-Temperature Technologies and Tools for Geothermal Applications, San Diego, California, (2-days)
2006 - Geothermal Exploration Technologies, San Diego, California, (2-days)
2007 - Geophysical Techniques in Geothermal Exploration, Sparks, Nevada, (2-days)
2007 - Land, Lease, and Unitization Legal Issues, Sparks, Nevada, (2-days)
2008 - Geothermal Reservoir Evaluation, Reno, Nevada, (2-days)
2008 - Basics of Geothermal Resource Development, Reno, Nevada, (1-day)
2008 - Introduction to Geothermal Energy, Reno, Nevada, (1-day)
2009 - Geothermal Heat Pump Workshop, Salt Lake City, Utah, (2-days)
2009 - Webinar: Utility Geothermal Development Strategies, Online, (1-day)
2009 - Webinar: Enhanced Geothermal Systems, Online, (1-day)
2009 - Webinar: Geothermal Heat Pump Programs and Benefits, Online, (1-day)
2009 - Geothermal Power 101 - Basics of Geothermal Resource Development, Reno, Nevada, (1-day)
2009 - Geothermal Heat Pumps, Reno, Nevada, (1-day)
2009 - EGS and Other Emerging Technologies, Reno, Nevada, (1-day)
2009 - Getting More Geothermal Projects On-line, Reno, Nevada, (1-day)
2010 - Texas Geothermal Technologies, Dallas, Texas, (1-day)
2010 - Geothermal Reservoir Evaluation, Sacramento, California, (2-days)
2010 - Energy Efficiency and Renewable Energy Portfolio (EERE), Sacramento, California, (1-day)
2010 - Geothermal Heat Pumps, Sacramento, California.(1-day)
2011 - An Introduction to Geothermal Resources Exploration and Development: Examples from The Long Valley Caldera, Mammoth Lakes, California, (1-day)
2011 - Geothermal Energy Leasing and Permitting, San Diego, California, (2-days)
2011 - An Introduction to Geothermal Exploration, San Diego, California, (2-days)
2012 - Recent Advances in Geothermal Geochemistry, Davis, California, (2-days)
2012 - Drilling, Reno, Nevada, (2-days)
2012 - Reservoir Stimulation, Reno, Nevada, (2-days)
2013 - Resource Assessment & Optimization, Sacramento, California, (2-days)
2013 - Exploration Drilling and Early Stage Geothermal Characterization, Bandung, Indonesia, (2-days)
2013 - New Developments in Power Plants, Las Vegas, Nevada, (2-days)
2013 - Geothermal Exploration in the 21st Century, Las Vegas, Nevada, (2-days)
2014 - Geothermal Drilling, Well Testing, Reservoir Monitoring & Management, Jakarta, Indonesia, (2-days)
2014 - Introduction to Hydrothermal Systems and Geothermal Exploration, Portland, Oregon, (2-days)
2014 - Geothermal Leasing, Unitization and Water Use Legal Issues, Portland, Oregon, (2-days)
2015 - Geothermal Workshop/Fieldtrip to Yellowstone National Park (5-days)
2016 - Conceptual Models of Geothermal Systems (2-days) Sacramento, California.
2016 - Reservoir Stimulation (2-days) Sacramento, California.
2016 - Best Practices in Operations & Maintenance (1-day) Sacramento, California.
2016 - Geothermal 101 Sacramento, California.