Modeling the corrosion of steel casing and the damage of well cement in a borehole system
Abstract
This work presents the effect of chloride-induced corrosion in an underground borehole system, specifically considering the steel casing and further damage to the surrounding cement. In the past four decades, oil well cement has been successfully used for underground construction. However, high concentrations of chloride ions gradually degrade the functionality and durability of well cement. Gasses and liquids can leak from deterioration caused by chloride ions, and thus motivate this study. The chemo-mechanical coupling diffusion model and a classical fracture mechanics model are applied. The model is validated with OPC concrete corrosion data from literature, and then applied to well cement using experimentally obtained material property data. The time when crack initiation, peak pressure, and complete fracture is reached in the model of the cement sheath provides a quantification of the expected service life of the borehole system.
- Authors:
-
- Univ. of Colorado, Boulder, CO (United States). Dept. of Civil and Environmental Engineering
- Publication Date:
- Research Org.:
- Univ. of Colorado, Boulder, CO (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1849176
- Alternate Identifier(s):
- OSTI ID: 1633840
- Grant/Contract Number:
- FE0026514
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Construction and Building Materials
- Additional Journal Information:
- Journal Volume: 259; Journal Issue: C; Journal ID: ISSN 0950-0618
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 42 ENGINEERING; Construction & building technology; Engineering; Materials Science; Well cement; Chloride diffusion; Corrosion; Crack propagation
Citation Formats
Li, Linfei, Hubler, Mija H., and Xi, Yunping. Modeling the corrosion of steel casing and the damage of well cement in a borehole system. United States: N. p., 2020.
Web. doi:10.1016/j.conbuildmat.2020.119701.
Li, Linfei, Hubler, Mija H., & Xi, Yunping. Modeling the corrosion of steel casing and the damage of well cement in a borehole system. United States. https://doi.org/10.1016/j.conbuildmat.2020.119701
Li, Linfei, Hubler, Mija H., and Xi, Yunping. Thu .
"Modeling the corrosion of steel casing and the damage of well cement in a borehole system". United States. https://doi.org/10.1016/j.conbuildmat.2020.119701. https://www.osti.gov/servlets/purl/1849176.
@article{osti_1849176,
title = {Modeling the corrosion of steel casing and the damage of well cement in a borehole system},
author = {Li, Linfei and Hubler, Mija H. and Xi, Yunping},
abstractNote = {This work presents the effect of chloride-induced corrosion in an underground borehole system, specifically considering the steel casing and further damage to the surrounding cement. In the past four decades, oil well cement has been successfully used for underground construction. However, high concentrations of chloride ions gradually degrade the functionality and durability of well cement. Gasses and liquids can leak from deterioration caused by chloride ions, and thus motivate this study. The chemo-mechanical coupling diffusion model and a classical fracture mechanics model are applied. The model is validated with OPC concrete corrosion data from literature, and then applied to well cement using experimentally obtained material property data. The time when crack initiation, peak pressure, and complete fracture is reached in the model of the cement sheath provides a quantification of the expected service life of the borehole system.},
doi = {10.1016/j.conbuildmat.2020.119701},
journal = {Construction and Building Materials},
number = C,
volume = 259,
place = {United States},
year = {Thu Jun 18 00:00:00 EDT 2020},
month = {Thu Jun 18 00:00:00 EDT 2020}
}
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