Simulations of Brady's-Type Fault Undergoing CO2 Push-Pull: Pressure-Transient and Sensitivity Analysis

Jung, Yoojin; Doughty, Christine

doi:10.15121/1452750

Title: Simulations of Brady's-Type Fault Undergoing CO2 Push-Pull: Pressure-Transient and Sensitivity Analysis

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Abstract

Input and output files used for fault characterization through numerical simulation using iTOUGH2. The synthetic data for the push period are generated by running a forward simulation (input parameters are provided in iTOUGH2 Brady GF6 Input Parameters.txt [InvExt6i.txt]). In general, the permeability of the fault gouge, damage zone, and matrix are assumed to be unknown. The input and output files are for the inversion scenario where only pressure transients are available at the monitoring well located 200 m above the injection well and only the fault gouge permeability is estimated. The input files are named InvExt6i, INPUT.tpl, FOFT.ins, CO2TAB, and the output files are InvExt6i.out, pest.fof, and pest.sav (names below are display names). The table graphic in the data files below summarizes the inversion results, and indicates the fault gouge permeability can be estimated even if imperfect guesses are used for matrix and damage zone permeabilities, and permeability anisotropy is not taken into account.

Authors:

Jung, Yoojin; Doughty, Christine

Lawrence Berkeley National Laboratory

Publication Date:: Thu Mar 08 23:00:00 EST 2018

Other Number(s):: 1019

Research Org.:: DOE Geothermal Data Repository; Lawrence Berkeley National Laboratory

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)

Collaborations:: Lawrence Berkeley National Laboratory

Subject:: 15 GEOTHERMAL ENERGY; Brady; CO2; EGS; GF6; INCON; PEST; TOUGH2; carbon dioxide; characterization; energy; fault; fault modeling; faulting; fracture; geothermal; iTOUGH2; inverse modeling; parameter estimation; pressure-transient testing; push-pull; sensitivity analysis; stimulation

OSTI Identifier:: 1452750

DOI:: https://doi.org/10.15121/1452750

Citation Formats


                    Jung, Yoojin, and Doughty, Christine. Simulations of Brady's-Type Fault Undergoing CO2 Push-Pull: Pressure-Transient and Sensitivity Analysis.  United States: N. p., 2018. 
        Web.  doi:10.15121/1452750.

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                    Jung, Yoojin, & Doughty, Christine. Simulations of Brady's-Type Fault Undergoing CO2 Push-Pull: Pressure-Transient and Sensitivity Analysis.  United States.  doi:https://doi.org/10.15121/1452750

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                    Jung, Yoojin, and Doughty, Christine. 2018.  
"Simulations of Brady's-Type Fault Undergoing CO2 Push-Pull: Pressure-Transient and Sensitivity Analysis".  United States.  doi:https://doi.org/10.15121/1452750.  https://www.osti.gov/servlets/purl/1452750. Pub date:Thu Mar 08 23:00:00 EST 2018

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@article{osti_1452750,

  title        = {Simulations of Brady's-Type Fault Undergoing CO2 Push-Pull: Pressure-Transient and Sensitivity Analysis},

  author       = {Jung, Yoojin and Doughty, Christine},

  abstractNote = {Input and output files used for fault characterization through numerical simulation using iTOUGH2. The synthetic data for the push period are generated by running a forward simulation (input parameters are provided in iTOUGH2 Brady GF6 Input Parameters.txt [InvExt6i.txt]). In general, the permeability of the fault gouge, damage zone, and matrix are assumed to be unknown. The input and output files are for the inversion scenario where only pressure transients are available at the monitoring well located 200 m above the injection well and only the fault gouge permeability is estimated. The input files are named InvExt6i, INPUT.tpl, FOFT.ins, CO2TAB, and the output files are InvExt6i.out, pest.fof, and pest.sav (names below are display names). The table graphic in the data files below summarizes the inversion results, and indicates the fault gouge permeability can be estimated even if imperfect guesses are used for matrix and damage zone permeabilities, and permeability anisotropy is not taken into account.},

  doi          = {10.15121/1452750},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Mar 08 23:00:00 EST 2018},

  month        = {Thu Mar 08 23:00:00 EST 2018}

}

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DOI: https://doi.org/10.15121/1452750

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