World Geothermal Congress 2020+1
March - October, 2021

Overview of the Hawaii Play Fairway Project, Phases 1-3

Nicole LAUTZE, Donald THOMAS, Garrett ITO, Nicholas HINZ, Neil FRAZER, Stephen MARTEL

[University of Hawaii, USA]

The Hawaii Play Fairway project, funded by the U.S. Department of Energy, comprises three Phases. In Phase 1, existing geologic, groundwater, and geophysical datasets relevant to subsurface heat, fluid and permeability were identified, compiled, and ranked. A statistical methodology was developed to integrate these data into a resource probability map. Phase 2 of the project involved the collection of new groundwater data in ten prospective regions across the state; collection of new geophysical data on Lanai, Maui, and central Hawaii Island; and modeling of topographically induced stresses – the last to better characterize permeability. Phase 2 data were incorporated into an updated resource probability map, which that led to the prioritization of exploratory drilling targets for Phase 3. Lanai Island was ultimately selected for drilling due to a combination of scientific and logistical considerations, which will be outlined here. This presentation will provide an overview of the Hawaii Play Fairway project, including a discussion of Phase 3 results. Electricity prices in the State of Hawaii are the highest in the US and about double the national average, in part due to the fact that roughly 80% of Hawaii’s energy is from imported petroleum. The Hawaiian Islands are volcanic in origin, yet the extent of the State of Hawaii’s geothermal resource is largely uncharacterized. A statewide geothermal resource assessment published in 1985 found a potential resource on all islands. Since then, little additional exploration was conducted, until this Play Fairway project. Our results have provided a major step forward for the State of Hawaii through providing an updated resource assessment, a roadmap for additional exploration activities, and the identification of target sites for drilling.

        Topic: Resource Assessment Paper Number: 16064

         Session 22A: Resource Assessment 2 -- Play Fairway Analysis [Wednesday 12th May 2021, 06:00 am] (UTC-8)
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