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Title: The role of wellbore remediation on the evolution of groundwater quality from CO₂ and brine leakage

Abstract

Long-term storage of CO₂ in underground reservoirs requires a careful assessment to evaluate risk to groundwater sources. The focus of this study is to assess time-frames required to restore water quality to pre-injection levels based on output from complex reactive transport simulations that exhibit plume retraction within a 200-year simulation period. We examined the relationship between plume volume, cumulative injected CO₂ mass, and permeability. The role of mitigation was assessed by projecting falloffs in plume volumes from their maximum peak levels with a Gaussian function to estimate plume recovery times to reach post-injection groundwater compositions. The results show a strong correlation between cumulative injected CO₂ mass and maximum plume pH volumes and a positive correlation between CO₂ flux, cumulative injected CO₂, and plume recovery times, with secondary dependence on permeability.

Authors:
 [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1201548
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Energy Procedia
Additional Journal Information:
Journal Volume: 63; Journal Issue: C; Journal ID: ISSN 1876-6102
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; uncertainty quantification; CO₂; storage; risk assessment; reactive transport; groundwater; wellbore mitigation; plume recovery

Citation Formats

Mansoor, Kayyum, Carroll, Susan A., and Sun, Yunwei. The role of wellbore remediation on the evolution of groundwater quality from CO₂ and brine leakage. United States: N. p., 2014. Web. doi:10.1016/j.egypro.2014.11.510.
Mansoor, Kayyum, Carroll, Susan A., & Sun, Yunwei. The role of wellbore remediation on the evolution of groundwater quality from CO₂ and brine leakage. United States. doi:10.1016/j.egypro.2014.11.510.
Mansoor, Kayyum, Carroll, Susan A., and Sun, Yunwei. Wed . "The role of wellbore remediation on the evolution of groundwater quality from CO₂ and brine leakage". United States. doi:10.1016/j.egypro.2014.11.510. https://www.osti.gov/servlets/purl/1201548.
@article{osti_1201548,
title = {The role of wellbore remediation on the evolution of groundwater quality from CO₂ and brine leakage},
author = {Mansoor, Kayyum and Carroll, Susan A. and Sun, Yunwei},
abstractNote = {Long-term storage of CO₂ in underground reservoirs requires a careful assessment to evaluate risk to groundwater sources. The focus of this study is to assess time-frames required to restore water quality to pre-injection levels based on output from complex reactive transport simulations that exhibit plume retraction within a 200-year simulation period. We examined the relationship between plume volume, cumulative injected CO₂ mass, and permeability. The role of mitigation was assessed by projecting falloffs in plume volumes from their maximum peak levels with a Gaussian function to estimate plume recovery times to reach post-injection groundwater compositions. The results show a strong correlation between cumulative injected CO₂ mass and maximum plume pH volumes and a positive correlation between CO₂ flux, cumulative injected CO₂, and plume recovery times, with secondary dependence on permeability.},
doi = {10.1016/j.egypro.2014.11.510},
journal = {Energy Procedia},
number = C,
volume = 63,
place = {United States},
year = {Wed Dec 31 00:00:00 EST 2014},
month = {Wed Dec 31 00:00:00 EST 2014}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 1 work
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