A review of oil well cement alteration in CO2-rich environments

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Abstract

The purpose of this study is to examine previous works undertaken that characterise the cement alteration due to its exposure to CO2-bearing fluids attacking on the interfaces of cement-rock and cement casing, or through cement cracks, and the cement matrix itself. Numerous studies have reported carbonation of well cements. The majority of studies reported self-healing behaviour of cements cracks observed under general CO2 storage conditions. In addition, defective cement matrix and bonding between cement and casing were also found to be potential causes for leakage pathways. Albeit, severe conditions, such as high acidity degree of brine and high flow velocity, may negatively affect the self-healing behaviour of the cement.
Original languageEnglish
Pages (from-to)946–968
Number of pages23
JournalConstruction and Building Materials
Volume186
Early online date10 Aug 2018
DOIs
Publication statusPublished - 20 Oct 2018

Fingerprint

Oil wells
Cements
Bearings (structural)
Cracks
Carbonation
Acidity
Flow velocity
Rocks

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, Vol 186, (2018) DOI: 10.1016/j.conbuildmat.2018.07.250

© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • CO2
  • Cement
  • Leakage
  • Geo-sequestration

Cite this

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abstract = "The purpose of this study is to examine previous works undertaken that characterise the cement alteration due to its exposure to CO2-bearing fluids attacking on the interfaces of cement-rock and cement casing, or through cement cracks, and the cement matrix itself. Numerous studies have reported carbonation of well cements. The majority of studies reported self-healing behaviour of cements cracks observed under general CO2 storage conditions. In addition, defective cement matrix and bonding between cement and casing were also found to be potential causes for leakage pathways. Albeit, severe conditions, such as high acidity degree of brine and high flow velocity, may negatively affect the self-healing behaviour of the cement.",
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note = "NOTICE: this is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, Vol 186, (2018) DOI: 10.1016/j.conbuildmat.2018.07.250 {\circledC} 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/",
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N2 - The purpose of this study is to examine previous works undertaken that characterise the cement alteration due to its exposure to CO2-bearing fluids attacking on the interfaces of cement-rock and cement casing, or through cement cracks, and the cement matrix itself. Numerous studies have reported carbonation of well cements. The majority of studies reported self-healing behaviour of cements cracks observed under general CO2 storage conditions. In addition, defective cement matrix and bonding between cement and casing were also found to be potential causes for leakage pathways. Albeit, severe conditions, such as high acidity degree of brine and high flow velocity, may negatively affect the self-healing behaviour of the cement.

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