DEEPEN 3D PFA Index Models for Exploration Datasets at Newberry Volcano

Description

DEEPEN stands for DE-risking Exploration of geothermal Plays in magmatic ENvironments. As part of the development of the DEEPEN 3D play fairway analysis (PFA) methodology for magmatic plays (conventional hydrothermal, superhot EGS, and supercritical), index models needed to be developed to map values in geoscientific exploration datasets to favorability index values. This GDR submission includes those index models. Index models were created by binning values in exploration datasets into chunks based on their favorability, and then applying a number between 0 and 5 to each chunk, where 0 represents very unfavorable data values and 5 represents very favorable data values. To account for differences in how exploration methods are used to detect each play component, separate index models are produced for each exploration method for each component of each play type. Index models were created using histograms of the distributions of each exploration dataset in combination with literature and input from experts about what combinations of geophysical, geological, and geochemical signatures are considered favorable at Newberry. This is in attempt to create similar sized bins based on the current understanding of how different anomalies map to favorable areas for the different types of geothermal plays (i.e., conventional hydrothermal, superhot EGS, and supercritical). For example, an area of partial melt would likely appear as an area of low density, high conductivity, low vp, and high vp/vs. This means that these target anomalies would be given high (4 or 5) index values for the purpose of imaging the heat source. To account for differences in how exploration methods are used to detect each play component, separate index models are produced for each exploration method for each component of each play type. Index models were produced for the following datasets: - Geologic model - Alteration model - vp/vs - vp - vs - Temperature model - Seismicity (density*magnitude) - Density - Resistivity - Fault distance - Earthquake cutoff depth model

Resources

Name Format Description Link
53 **This is an outdated version. See "EGS Index Models v2.0.xlsx" below.** Index models used to map data values to favorability indices in the superhot EGS PFA applied to Newberry. These index models are intended to be specific to Newberry, but some may be more widely applicable. https://gdr.openei.org/files/1511/index_models_egs.xlsx
53 **This is an outdated version. See "Supercritical Index Models v2.0.xlsx" Index models used to map data values to favorability indices in the supercritical PFA applied to Newberry. These index models are intended to be specific to Newberry, but some may be more widely applicable. https://gdr.openei.org/files/1511/index_models_sc.xlsx
53 Index models used to map data values to favorability indices in the superhot EGS PFA applied to Newberry. These index models are intended to be specific to Newberry, but some may be more widely applicable. This version includes an updated seismicity-heat source index model and resistivity-insulation index model. https://gdr.openei.org/files/1511/index_models_egs_v2.0.xlsx
53 Index models used to map data values to favorability indices in the convention hydrothermal PFA applied to Newberry. These index models are intended to be specific to Newberry, but some may be more widely applicable. This version includes an updated resistivity-insulation index model https://gdr.openei.org/files/1511/index_models_hydrothermal_v2.0.xlsx
53 Index models used to map data values to favorability indices in the supercritical PFA applied to Newberry. These index models are intended to be specific to Newberry, but some may be more widely applicable. This version includes an updated seismicity-heat source index model and resistivity-insulation index model. https://gdr.openei.org/files/1511/index_models_sc_v2.0.xlsx
53 **This is an outdated version. See "Conventional Hydrothermal Index Models v2.0.xlsx" Index models used to map data values to favorability indices in the convention hydrothermal PFA applied to Newberry. These index models are intended to be specific to Newberry, but some may be more widely applicable. https://gdr.openei.org/files/1511/index_models_hydrothermal.xlsx

Tags

  • supercritical
  • superhot-egs
  • magmatic
  • index-models
  • deepen
  • hydrothermal
  • favorability
  • superhot
  • pfa
  • characterization
  • exploration
  • newberry
  • geothermal
  • energy

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