NPGS Monthly MeetingThursday, May 6 at 7 PM, PDT

The Exploration History and Conceptual Model of the Gerlach Geothermal System 

by Robert Selwood, Ormat Technologies, Inc.

A message from NPGS: Our final NPGS Membership Meeting before the summer break will be at 7:00 PM on May 6 2021. This will be an important meeting to attend. We will be discussing Constitution and Bylaws changes, followed by what I expect will be a great talk by Robert Selwood of Ormat, whose talk is titled:

“The Exploration History and Conceptual Model of the Gerlach Geothermal System”

Abstract: Geothermal exploration has been conducted at Gerlach since the early 1970s by a succession of government agencies and private companies. Temperature gradient drilling has defined outflow to the NE and E, but no drilling to date has intersected the expected 300-350°F upflow indicated by spring geochemistry. Since acquiring the Gerlach geothermal leases with the acquisition of US Geothermal in 2018, Ormat has conducted a renewed exploration campaign. This exploration campaign has included the acquisition of magnetic, gravity, and magnetotelluric surveys, resampling and analysis of hot spring waters, detailed geologic mapping, and the acquisition of image logs in historic wells. From this the development of revised conceptual model had been developed to guide a new phase of exploration drilling planned for 2021/2022. In this presentation we present the result of Ormat’s exploration program to date and the integration of that data with historic work to form a revised conceptual model.

The event details are as follows:

Organization: Nevada Petroleum and Geothermal Society
Event Name: May 6, 2021 NPGS Membership Meeting
Date: May 6, 2021, 07:00 PM to 08:30 PM
Location: Online Zoom Meeting
A $10 donation is requested, $5 for students.

Click here for event information or to register online and reserve your seat:


For further information contact:

Nevada Petroleum and Geothermal Society
Phone: (775) 338-5593
Email: zehnerrick@yahoo.com

Mackay Speaker SeriesFriday, May 7, 2021, 3 PM, PDT

Extracting Lithium for a Clean Energy Future

By Dr. Amanda Hall, Professional Geophysicist, CEO/Founder of Summit Nanotech Corp.

A message from MSESE:  “On behalf of Annie Huhta, Mackay School Director, please join us for the last Mackay Lecture Series for Spring! The Spring 2021 Mackay Speaker Series is a three-part series focusing on Lithium in Nevada with presentations occurring in March, April and May, 2021. We hope you will join us for our new Mackay Speaker Series webinar event!”

Abstract: As the world transitions to a new energy future, demand for lithium is rising exponentially with society’s desire for e-mobility. Mining practices to get lithium from the ground, however, are slow, polluting and expensive. Amanda Hall and her team at Summit Nanotech have developed technology that will extract lithium from solution sustainably by leveraging advances in nanoscience. Our process doubles yield, requires no fresh water, creates 90% less waste, 26x less land use and emits 50% less GHGs compared to industrial averages. Mining companies want this technology to stabilize their lithium supply and the world needs it to ensure responsible growth in the energy storage space.

Bio: Amanda Hall is a professional geophysicist and the CEO/Founder of Summit Nanotech, a company developing direct lithium extraction technology for the growing lithium ion battery sector. Amanda felt the market pull away from oil & gas and towards a clean energy, electromobility future and so she followed her gut into the clean tech industry. Amanda is identified by the Canadian government as a leading female innovator and is a finalist in the Women in Cleantech challenge vying for a million dollar prize. Amanda is a mother to three beautiful daughters, endorses diversity, equality and inclusion and loves getting lost in the mountains.

Register in advance for this seminar:


NPGS 2021 Summer Field TripSaturday, June 12, 2021

Wabuska and Patua Geothermal Systems

Announcement: Nevada Petroleum and Geothermal Society (NPGS) 2021 Summer Field Trip

Trip Date:  Saturday, June 12, 2021

Trip Leaders: Bill Ehni (775-843-2030, ehnient@aol.com) and Rick Zehner (775-338-5593, zehnerrick@yahoo.com)

Logistics:  Auto caravan for entire field trip. Guidebook and lunch provided. Intervehicular communication by cell phone.
Lunch provided by: Magee Geophysical Services LLC.
Registration Cost: $15 per person.


Tour Stops and Descriptions:

08:00 – Depart: NE parking lot of Peppermill, 2707 S. Virginia St., Reno.

09:30 – Stop 1: (GPS Coordinates: 39.161° N, 119.192° W)

Wabuska Geothermal Project: Key Viability Factors for a Low-Temperature Project Hosts: John Casteeland Logan Egbert (Open Mountain Energy), Nick Hinz (Geologica)

Open Mountain Energy acquired Wabuska in 2017. In 2018, the new Whitegrass facility increased Wabuska’s generation capacity to 4.5 MW, showcasing the low temperature capability of Kaishan Group’s flexible ORC screw-expander technology for maximum heat extraction. Key factors for sustainable long-term viability include a highly permeable geologic resource at shallow depths (< 700 feet), benign fluid chemistry, and efficient low temperature (< 210° F) power generation accompanied by some of the lowest O&M costs in the industry on a per-MW basis.

12:30 – Stop 2: (GPS Coordinates: 39.464° N, 119.069° W)

Lunch and restroom access at Lahontan Dam Overlook parking lot just off U.S. Highway 50. Lunch provided by Magee Geophysical Services LLC.

Lunch discussion topic by Bridget Ayling and Jim Faulds (Great Basin Center for Geothermal Energy, NBMG, UNR): The Fallon FORGE site, located in the easternmost portion of the Fallon Naval Air Station, 12 km southeast of Fallon, Nevada. Fallon was a semi-finalist for the DOE’s Frontier Observatory for Research in Geothermal Energy (FORGE), a program assessing various technologies for extracting energy from hot, relatively dry rocks. Our lunch stop discussion will include the stratigraphic and structural framework, known reservoir characteristics (geochemistry, temperature and permeability), and suitability of the Fallon FORGE site.

15:00 Stop 3: (GPS Coordinates: 39.564° N, 119.052° W)

Patua Geothermal and Solar Power Plants, Lyon and Churchill counties, Nevada. by Monte Morrison(Cyrq Energy); Wm. J. Ehni (Ehni Enterprises Inc.)

Electrical generation from geothermal sources began at Patua in 2013 and has generated on the average about 20 MWnet with an average inlet temperature of ~300° F. Magma Power Company drilled the “Hazen #1” discovery well in 1961 near the existing Patua Hot Springs to a total depth of about 750 feet and reported a temperature of 270° F. Approximately 84 acres of solar panels were installed in 2017 and generate approximately 10MWnet.

Geologic Model – Patua Geothermal Project by Trenton T. Cladouhos (Cyrq Energy), et. al; GRC Transactions, Vol. 41, 2017, reprinted with permission.

The Patua Geothermal Field, located near Fernley, Nevada, 60 km east of Reno, has an extensive wellfield, with 13 active and five inactive wells, nine core holes, and ten temperature gradient holes. Based on tracer test results, well interference tests and downhole geology, the geologic model defines three distinct fault zones within the sedimentary reservoir with high anisotropic permeability. Highest permeabilities trend south-southwest to north-northeast.

Future Plans – Patua Geothermal Project by Trenton T. Cladouhos (Cyrq Energy)

Patua was recently awarded a grant under the DOE Geothermal Wells of Opportunity Funding program. In the project, innovative stimulation technologies will be used to improve the permeability of well 16-29 on the south side of US Highway 50A.

Outcrop stop – Patua by Jim Faulds (Great Basin Center for Geothermal Energy, NBMG, UNR)

Paleo-geothermal deposits (silicified Quaternary Lake Lahontan sands) and the structural setting of the Patua geothermal area will be reviewed. The silicified sands indicate a relatively high-temperature (>175°C) geothermal system at depth. Based on surface exposures, the structural setting of Patua is obscure, but integration of geologic and geophysical data reveals a possible step-over and fault termination in a normal fault system.

For further information contact:

Nevada Petroleum and Geothermal Society
Phone: (775) 338-5593
Email: zehnerrick@yahoo.com


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