Simulations of Brady's-Type Fault Undergoing CO2 Push-Pull: Pressure-Transient and Sensitivity Analysis
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.
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Description.docx
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Description of the files and workflow related to the data files below.
iTOUGH2 input file containing a list of the times (s) at which the model results for pressure change at the observation point (fault gouge 200 m above the injection wel... more
DOE Project Name: Push-pull well testing using CO2 with active source geophysical monitoring DOE Project Number: EE0001554 DOE Project Lead: Sean Porse
DOI: 10.15121/1452750 Last Updated: over a year ago