Modeling and Simulation Forum #3

Utah FORGE Modeling & Simulation Forum #3

"Injection Testing and Stress Measurements" presented by Pengju Xing and John McLennan (University of Utah)

June 17 at 11 am MDT

"The forum will address injection-based stress assessments were carried out in the openhole toe and in a cased/perforated section in a pilot vertical well in 2017 and in 2019. The basic measurement program is described, and the familiar complexities of interpretation discussed. Additional discussion will briefly describe flowback and temperature as diagnostics for in situ stresses.

Future modeling activities will include history matching legacy injection data using Schlumberger’s Kinetix and Itasca’s XSite. With calibration from this history match, predictive simulations will be carried out to help to comprehend fracture morphology during future injections at the toe of the first FORGE extended reach well.

This is the third forum of the series and is intended to have an open format to present modeling and simulation, both completed and planned, as well as activities being conducted by the Utah FORGE Team. This webinar will be recorded and will be available for viewing later.

Please note registration is required for the forum and seating is limited.

Did you know… that the direct use of geothermal energy can be used to raise alligators? 

Did you know that the direct use of geothermal energy can be used to raise alligators?

The direct use of geothermal energy can apply to almost any activity that requires heating (and cooling) for industrial, residential and agricultural purposes. The heat is transferred by hot ground water in the temperature range of 20-120°C (70-250°F) which is produced from shallow wells and then distributed through surface pipework. One very popular direct use application of geothermal energy is for bathing in natural hot springs. Spas all over the world use naturally produced hot water for recreational and therapeutic purposes. In Utah, the Crystal Hot Springs offers warm and mineral-rich baths which attracts numerous visitors throughout the year.

Another direct use application is space heating that may serve a single, stand-alone structure, or more commonly multiple buildings, which are linked by a pipeline that supplies hot water. For regions that are subject to cold winters, this is a cost effective means of heating without contributing to atmospheric pollution. District heating has been in use since the late 1890s when the city of Boise, Idaho started using geothermal energy to heat buildings. District heating is also popular in China, Iceland, France, Germany, Hungary and New Zealand. In the state of Utah, the prison at the Point of the Mountain uses district heating for 330,000 sq. ft. of prison space, saving thousands of dollars over conventional heating systems.

This type of geothermal energy is even used to heat greenhouses to grow plants. The Milgro complex in Newcastle, Utah is one of the largest producers of poinsettias and chrysanthemums in the USA; it uses geothermally heated greenhouses to grow its flowers. This type of energy is also used to heat ponds for aquaculture and fish farming. The warm springs near Grantsville, Utah are filled with warm, mineral-rich water that supports a variety of fish and are also an attraction for scuba-diving activities. Fish breeders in Idaho farm a range of species, including ones requiring geothermally heated ponds, which famously once included alligators!

Read more:

https://hagermanvalleychamber.com/membership_directory/fish-breeders-of-idaho/

https://oregontechsfstatic.azureedge.net/sitefinity-production/docs/default-source/geoheat-center-documents/quarterly-bulletin/vol-25/art7.pdf?sfvrsn=98268d60_4

https://www.nrel.gov/docs/fy04osti/36316.pdf

Modeling and Simulation Forum #2 RECORDING

Utah FORGE Modeling and Simulation Forum #2

"Hydraulic Fracture Stimulation Patterns in the FORGE Reservoir Using Multiple Stochastic DFN Realizations and Variable Stress Conditions" presented by Aleta Finnila (Golder)

May 20 at 11 am MDT

The presentation includes a summary of the current FORGE reference DFN and the sensitivity work performed to find average and end-member DFN realizations for hydraulic stimulation of the new well 16A(78)-32. There is a discussion of how the DFN can be used by other modelers and what type of filters should be used on the DFN in order to extract the best set of fractures for a particular simulation goal.The presentation includes a summary of the current FORGE reference DFN and the sensitivity work performed to find average and end-member DFN realizations for hydraulic stimulation of the new well 16A(78)-32. There is a discussion of how the DFN can be used by other modelers and what type of filters should be used on the DFN in order to extract the best set of fractures for a particular simulation goal.

This is the second forum of the series and is intended to have an open format to present modeling and simulation, both completed and planned, as well as activities being conducted by the Utah FORGE Team. This webinar has been recorded and is now available for viewing.

UPDATE: Audio recording has been fixed. Enjoy the full version.

The pdf of the presentation is available 20200516_MSForum-post.

References mentioned:

  • For details on the FORGE DFN development:

Finnila, A., Forbes, B., and Podgorney, R.: Building and Utilizing a Discrete Fracture Network Model of the FORGE Utah Site, Proceedings, 44th Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, CA (2019).

  • Details on sensitivity work for stochastic realization and stress state:

Finnila, A., and R.K. Podgorney. 2020. Exploring hydraulic fracture stimulation patterns in the FORGE reservoir using multiple stochastic DFN realizations and variable stress conditions. In Proceedings, 45th Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California.

  • Mentioned, but it isn't central in this presentation:

Xing, P., Duane, W, Rickard, B., Barker, B., Finnila, A., Ghassemi, A., Pankow, K., Podgorney, R., Moore, J., Goncharov, A., McLennan, J.: Interpretation of In-Situ Injection Measurements at the FORGE Site, Proceedings, 45th Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, CA (2020).

  • Other supporting information for the Forum, details on the reference earth and native state models can be found on the Earth Model  and  Numerical Modeling  pages.

To view the 1st forum as well as the schedule of upcoming webinars visit the Modeling and Simulation Forum page.

To receive updates and special announcements please SUBSCRIBE

Modeling and Simulation Forum #1 RECORDING

The inaugural Modeling and Simulation Forum was held on April 15, 2020 and if you weren't able to participate you can check out the video recording of the webinar below.

Topics that were covered included an overview of the Utah FORGE project, a description of the numerical methods and codes that have used, a summary of modelling results dealing with discrete fracture network, the distribution of stress, and the planning of well trajectories.

Download the PDF of the slides:

20200415_MSForum-post

This will be a recurring event to keep the EGS community updated on our activities and, most importantly, to gain the community's feedback.

For more information about upcoming webinars visit the Modeling and Simulation Forum page

For news, special announcement about the Utah FORGE project activities please SUBSCRIBE

Did you know… how geothermal energy is utilized?

Did you know how geothermal energy is utilized?

The three most common applications are heat pumps, direct use, and electricity generation. Geothermal heat pumps extract heat from the shallow subsurface for heating in the winter and reject the heat back into the ground in the summer for cooling. Heat pump systems are the fastest growing use of geothermal energy in the world. They can be installed in individual homes or large buildings. Gardner Hall at the University of Utah is one of several large buildings in Utah using heat pumps for heating and cooling. Heat pumps do not require a source of hot water, instead they use the natural thermal energy in the ground at less than 5 feet depth.

Where hot water occurs in the shallow subsurface at temperatures between 35° and 150°C (95-300°F), it can be used directly for bathing and spas, heating buildings, and for industrial purposes such as vegetable drying and raising fish. The poinsettias and chrysanthemums sold in grocery and garden stores are grown in a 24 acre geothermally heated greenhouse complex in Newcastle, Utah.

Geothermal power plants produce electricity from hot water with temperatures ranging from about 150° to 320°C (300 to 600°F). The lower temperatures can be found throughout the western USA; the highest temperatures are common around volcanoes, including those making up the Pacific Ring of Fire.

The hottest geothermal wells produce steam, which is used to spin turbines for electric generation. Where just hot water is produced, a heat exchanger is used to boil a secondary fluid to produce vapor that spins the turbine. Once the electricity is generated, the water is injected back into the hot subsurface reservoir where it is reheated. Recently, the University of Utah signed a contract with Cyrq Energy for 20 megawatts of geothermal electricity. This geothermal electricity will provide about one third of the University of Utah’s power requirements.

 

Read more:

EPA ranks U No. 8 for green power use among universities

 

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Utah FORGE Solicitation Announcement

University of Utah and Utah FORGE Announce Solicitation

The University of Utah and Utah FORGE are pleased to announce FORGE Solicitation 2020-1. This is the first formal call for research proposals on enhanced geothermal systems technologies from the FORGE program. Up to 18 awards are anticipated for up to a total of $46,000,000.

A pre-recorded informational webinar to further outline the scope of the solicitation is now available. NO registration required. Please go to the Solicitations page for posted link to the webinar.

The submission deadline for the two-page Concept Papers has been set for 2:00 PM MDT, May 27, 2020.

You’ll find all the details about the solicitation, where to register, how to download the full document, and how to submit your application:

HERE

 

Introducing Modeling and Simulation Forum

The Utah FORGE Team is pleased to announce the inaugural FORGE Modeling and Simulation Forum commencing April 15 at 11 am MDT.  It is intended to be an open forum to present modeling and simulation, both completed and planned, activities being conducted by the Utah FORGE Team. The Forum will be a recurring event (frequency to be determined) which will help to keep the EGS community updated on our activities and, most importantly, to gain the community's feedback.

In preparation for the Forum, details on the reference earth and native state models can be found at the following links:

Earth Model

Numerical Modeling

The Forum will be hosted by Dr. Robert Podgorney, the modeling and simulation lead for the Utah FORGE team.  Registration is required, please sign-up via link below

 

Did you know… that Utah is No. 3 in the US for it geothermal energy production?

Did you know that Utah is No.3* in the United States for its production of geothermal energy?

The State of Utah is responsible for 2.8 % of the national geothermal power production. The United States leads the world in the amount of electricity generated with geothermal energy, producing about 16.7 billion kilowatthours (kWh), equal to 0.4% of total national electricity generation. Utah is one of the eight states that are producing geothermal energy, and currently has three geothermal electric plants. The three generation facilities are at Roosevelt Hot Springs by Utah Power and CalEnergy Corp., Thermo Hot Springs by Raser, and Cove Fort Station of Utah Municipal Power Association. While the state of Utah is now capable of generating 72 megawatts**, the Utah Governor’s Office of Energy believes it can increase geothermal power generation by another 2,200 megawatts hoping to bring more clean and renewable energy into the state’s power source.

 

*California leads the nation’s geothermal energy generation with a national share of 71.9 %, and Nevada follows second with 21.7%

**A megawatt can power between 750 and 1,000 homes

 

Read more:

https://www.deseret.com/2018/8/4/20650472/hot-and-steamy-energy-utah-hopes-for-ageothermal-first#an-aerial-view-of-the-nations-first-site-for-an-underground-geothermaltesting-laboratory-outside-milford-in-beaver-county

https://www.eia.gov/energyexplained/geothermal/use-of-geothermal-energy.php

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