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Title

Mitigation and remediation technologies and practices in case of undesired migration of CO2 from a geological storage unit-Current status

Publication Year

2014

Author(s)
  • Manceau, J. -C.
  • Hatzignatiou, D. G.
  • de Lary, L.
  • Jensen, N. B.
  • Reveillere, A.
Source
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL Volume: 22 Pages: 272-290 Published: 2014
ISSN
1750-5836 eISSN: 1878-0148
Abstract

One of the main objectives of operators and regulators involved in CO2 geological storage activities is to ensure that the injected CO2 will remain safely in the underground for a long period of time. Therefore, in addition to the screening and evaluation of the performance of a potential CO2 storage site, risks of unwanted migration in the subsurface should be addressed and adequately managed. This can include the use of methods to mitigate those risks and ultimately to remediate potential adverse effects. This paper reviews the status of knowledge with regards to the mitigation and remediation technologies, from mature techniques adapted from other fields, such as oil and gas industry and environmental clean-up, to research topics offering potential new possibilities. Several categories can be defined: (1) interventions on operational or decommissioned wells to re-establish their integrity; (2) pressure/fluid management techniques for countering the leakage driving forces and/or removing the leaking fluids; (3) emerging technologies providing new mitigation opportunities for controlling undesired CO2 migration; (4) techniques to remediate the impacts potentially induced by such a migration. This technical state of the art is completed by the actual practices in the emerging field of CO2 geological storage established from the regulatory requirements and guidelines, and from the experience gained in existing storage projects over the world. This article concludes on important best practices stemming from this review and on future challenges in terms of research topics and operational needs. (C) 2014 Elsevier Ltd. All rights reserved.

Author Keyword(s)
  • CO2 geological storage
  • Undesired migration
  • Mitigation
  • Remediation
  • Current practices
  • Review
KeyWord(s) Plus
  • DEEP SALINE AQUIFER
  • CARBON-DIOXIDE SEQUESTRATION
  • ARTIFICIAL GROUNDWATER
  • NATURAL ATTENUATION
  • HYDRAULIC BARRIER
  • UTSIRA FORMATION
  • ABANDONED WELL
  • LEAKY WELLS
  • RISK
  • GAS
ESI Discipline(s)
  • Engineering
  • Environment/Ecology
  • Geosciences
Web of Science Category(ies)
  • Energy & Fuels
  • Engineering, Environmental
Adress(es)

[Manceau, J. -C.; de Lary, L.; Reveillere, A.] Bur Rech Geol & Minieres, F-45060 Orleans 2, France; [Hatzignatiou, D. G.; Jensen, N. B.] IRIS, N-4068 Stavanger, Norway; [Hatzignatiou, D. G.] Univ Stavanger UiS, N-4036 Stavanger, Norway; [Manceau, J. -C.; Hatzignatiou, D. G.; de Lary, L.; Jensen, N. B.; Reveillere, A.] CO2GeoNet, F-45060 Orleans 2, France

Reprint Adress

Manceau, JC (reprint author), Bur Rech Geol & Minieres, 3 Av C Guillemin BP36009, F-45060 Orleans 2, France.

Country(ies)
  • France
  • Norway
CNRS - Adress(es)
    Accession Number
    WOS:000335200900021
    uid:/2BKGN10L
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