EDC’s Mahanagdong geothermal facility in Leyte, Philippines where GreenFire Energy and EDC are restoring an idle well. Courtesy of EDC.
GreenFire’s GreenLoop, called GreenLoop, is an Advanced Geothermal System (AGS). Using GreenLoop we provide solutions for geothermal power generation, direct thermal use, and industrial applications.
GreenLoop technology is composed of GreenLoop Modeling and GreenLoop Designs. GreenLoop Modeling is a sophisticated system for assessing the potential of a given geothermal resource and modeling the performance of alternative closed-loop geothermal designs to determine the optimal configuration. GreenLoop Designs are the physical attributes of a closed-loop system including the depth of the well, the architecture of the pipe system, the sizes and specifications of materials, and the type of working fluid to be employed.
GreenLoop Benefits
Enable Fast, Low Risk, High ROI Deployments
GreenLoop leverages existing geothermal wells, resources, and infrastructure to accelerate deployments, while reducing costs and risk. Projects may involve restoring idle, unproductive wells or drilling new GreenLoop wells in developed fields.
Access the Broad Spectrum of Geothermal Resources
GreenLoop technology is adaptable to generate power from a broad spectrum of geothermal resources from moderate to high temperature resources and with varying levels of permeability and pressure.
Use the Power of Analytic Models
GreenLoop’s proprietary models enable closed-loop performance modeling to optimize the energy potential. Cost modeling optimization assesses technoeconomic feasibility to reduce the risk and increase the ROI of projects.
Ensures Sustainable & Environmentally Superior Energy
GreenLoop ensures long term sustainability by preserving water mass and pressure. There are clear environmental benefits as there is no contact with subsurface water, no risk of fire or explosions, and a small footprint.
GreenLoop Solutions
GreenFire Energy provides complete solutions for power generation, direct use, and industrial applications. Each solution starts with advanced GreenLoop Modeling to select and optimize one of multiple GreenLoop Designs for the specific geothermal resource. The resulting design is then deployed by GreenFire Energy working in collaboration with strategic partners to offer a full range of project capabilities.
Solutions for Power Generation
- Geothermal Well Retrofit
- Expansion Within Field
- Greenfield Projects
- Oil and Gas Well Repurposing
- De-Risk Conventional Projects
Solutions for Direct Use
- Heating and Cooling
- De-Risk Conventional Projects
GreenLoop Modeling
GreenLoop Modeling is a sophisticated system for assessing the potential of a given geothermal resource and modeling the performance of alternative closed-loop geothermal designs to determine the optimal configuration.
GreenLoop includes proprietary modeling to assess geothermal wells, resources, and existing infrastructure to determine technoeconomic feasibility of projects and optimize the energy potential of geothermal resources. Analyses include well and reservoir modeling using simulations and 3D models. GreenFire Energy maintains a global database of geothermal wells.
- Performance Modeling
- Cost Modeling Optimization
- Techno-economic feasibility
- Global Well Database
GreenLoop Designs
A GreenLoop Design is an implementation of GreenLoop architecture custom-tailored for the geothermal resource, existing assets, and customer goals. Designs are specific to power generation, direct use, and industrial applications. A GreenLoop Design includes the physical attributes of a closed-loop system including the depth of the well, the architecture of the pipe system, the sizes and specifications of materials, and the type of working fluid to be employed.
A GreenLoop Design is an implementation of GreenLoop architecture engineered for a particular resource. GreenLoop Modeling results are used to create GreenLoop Designs for power generation, direct use, and industrial application. GreenLoop Designs include a Downbore Heat Exchanger (DBHX) to transport the heat. In some cases, a Surface Heat (SHX) is also available. Designs are custom tailored depending on the geothermal resource, existing assets, and customer goals.
GreenLoop Designs consist of a closed-loop system that includes a DBHX, in a specific architecture (e.g., coaxial, multilateral), a working fluid (e.g., sCO2, water), and other equipment. The DBHX circulates the selected working fluid through a closed loop to absorb heat before returning to the surface. A variety of turbine types can be considered for power generation. Otherwise, the heat can be directly used for heating and cooling or for industrial applications. A SHX is also available for removing non-condensable gases.
GreenFire Energy’s patented Steam GreenLoop Design and 2-Phase GreenLoop Design were developed for steam-dominated and 2-phase geothermal resources. The concept is to insert an insulated coaxial DBHX in an existing or new well to reach the feed zones of that resource and pick up the latent heat of vaporization when the steam in the resource condenses on the DBHX. The DBHX then brings that heat to the surface by running the working fluid inside insulated tubing.
GreenLoop Designs for Power Generation and Direct Use
- Steam GreenLoop
- 2-Phase GreenLoop
- Liquid GreenLoop
- Hot Dry Rock GreenLoop
- Hot Springs GreenLoop
GreenLoop Designs for Industrial Use
Different designs are needed for hydrogen production and other industrial applications. Contact us to discuss your specific needs.
GreenLoop Capabilities
GreenFire Energy solutions are comprised of technologies and services that span the full geothermal project lifecycle. GreenFire Energy capabilities include:
Engineering Services
- Analysis and modeling
- Project engineering
- Project development
- Technical consulting
- Procurement of equipment and services
- Environmental studies, research, testing, and engineering
- Research and development
Construction and Installation
- Construction project management
- Permit and concession services
- Well pad preparation
- Drilling
- Equipment installation
- Testing and commission
Operation and Maintenance
- Project operation and maintenance services
- Monitoring
- Reporting