Open AccessStress- and Chemistry-Mediated Permeability Enhancement/Degradation in Stimulated Critically-Stressed Fractures
Author(s) -
Derek Elsworth,
A.S. Grader,
Chris Marone,
P.M. Halleck,
Peter Rose,
I. Faoro,
Joshua Taron,
André Niemeijer,
Hideaki Yasuhara
Publication year - 2009
Language(s) - English
Resource type - Reports
DOI - 10.2172/950509
Subject(s) - permeability (electromagnetism) , dissolution , chemistry , effective stress , mineralogy , geology , geotechnical engineering , organic chemistry , biochemistry , membrane
This work has investigated the interactions between stress and chemistry in controlling the evolution of permeability in stimulated fractured reservoirs through an integrated program of experimentation and modeling. Flow-through experiments on natural and artificial fractures in Coso diorite have examined the evolution of permeability under paths of mean and deviatoric stresses, including the role of dissolution and precipitation. Models accommodating these behaviors have examined the importance of incorporating the complex couplings between stress and chemistry in examining the evolution of permeability in EGS reservoirs. This document reports the findings of experiment [1,2] and analysis [3,4], in four sequential chapters