Durability of Oilwell Cement in CO2-rich Environments

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

The anthropogenic emissions of carbon dioxide (CO2) into the atmosphere is considered as one of the main reasons for global warming. The injection of CO2 into underground formations is an immediate to mid-term option to decrease the level of this gas in the atmosphere. Depleted oil and gas reservoirs are among the best candidates for the carbon capture and storage projects (CCS). The reason for this is based on the well-characterised structure of these type of underground formations through the different periods of their life. One of the most concerned problems associated with CCS projects is CO2 leakage through well cements. Oilwell cements exposed to CO2-bearing fluids undergo geomechanical and geochemical changes which may endanger their integrity. This paper aims at providing a framework to predict the lifespan of a cement exposed to CO2-bearing fluid using numerical modelling based on coupling geochemical and geomechanical processes. The main processes of the radial compaction and the radial cracking are investigated. It was shown that the radial cracking process leads to a definite lifespan of the cement matrix after being exposed to CO2–bearing fluids, while the radial compaction process can increase the durability of the cement matrix. Generally, this process becomes more effective with increasing the radial stress on the cement sheath from the surrounding rocks.

LanguageEnglish
Title of host publicationFifth International Conference on Sustainable Construction Materials and Technologies (SCMT5)
Publication statusPublished - 2019
EventFifth International Conference on Sustainable Construction Materials and Technologies - Kingston upon Thames, United Kingdom
Duration: 14 Jul 201917 Jul 2019
Conference number: 5
https://www.kingston.ac.uk/events/item/2839/14-jul-2019-fifth-international-conference-on-sustainable-construction-materials-and-technologies-scmt5/

Conference

ConferenceFifth International Conference on Sustainable Construction Materials and Technologies
Abbreviated titleSCMT5
CountryUnited Kingdom
CityKingston upon Thames
Period14/07/1917/07/19
Internet address

Fingerprint

Cements
Durability
Bearings (structural)
Carbon capture
Fluids
Compaction
Global warming
Gases
Carbon dioxide
Rocks

Cite this

Bagheri, M., Shariatipour, S. M., & Ganjian, E. (2019). Durability of Oilwell Cement in CO2-rich Environments. In Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5)

Durability of Oilwell Cement in CO2-rich Environments. / Bagheri, Mohammadreza; Shariatipour, Seyed Mohammad; Ganjian, Eshmaiel.

Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5). 2019.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Bagheri, M, Shariatipour, SM & Ganjian, E 2019, Durability of Oilwell Cement in CO2-rich Environments. in Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5). Fifth International Conference on Sustainable Construction Materials and Technologies , Kingston upon Thames, United Kingdom, 14/07/19.
Bagheri M, Shariatipour SM, Ganjian E. Durability of Oilwell Cement in CO2-rich Environments. In Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5). 2019
Bagheri, Mohammadreza ; Shariatipour, Seyed Mohammad ; Ganjian, Eshmaiel. / Durability of Oilwell Cement in CO2-rich Environments. Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5). 2019.
@inproceedings{9e952e5659914c75b5a8e294e84ac00a,
title = "Durability of Oilwell Cement in CO2-rich Environments",
abstract = "The anthropogenic emissions of carbon dioxide (CO2) into the atmosphere is considered as one of the main reasons for global warming. The injection of CO2 into underground formations is an immediate to mid-term option to decrease the level of this gas in the atmosphere. Depleted oil and gas reservoirs are among the best candidates for the carbon capture and storage projects (CCS). The reason for this is based on the well-characterised structure of these type of underground formations through the different periods of their life. One of the most concerned problems associated with CCS projects is CO2 leakage through well cements. Oilwell cements exposed to CO2-bearing fluids undergo geomechanical and geochemical changes which may endanger their integrity. This paper aims at providing a framework to predict the lifespan of a cement exposed to CO2-bearing fluid using numerical modelling based on coupling geochemical and geomechanical processes. The main processes of the radial compaction and the radial cracking are investigated. It was shown that the radial cracking process leads to a definite lifespan of the cement matrix after being exposed to CO2–bearing fluids, while the radial compaction process can increase the durability of the cement matrix. Generally, this process becomes more effective with increasing the radial stress on the cement sheath from the surrounding rocks.",
author = "Mohammadreza Bagheri and Shariatipour, {Seyed Mohammad} and Eshmaiel Ganjian",
year = "2019",
language = "English",
booktitle = "Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5)",

}

TY - GEN

T1 - Durability of Oilwell Cement in CO2-rich Environments

AU - Bagheri, Mohammadreza

AU - Shariatipour, Seyed Mohammad

AU - Ganjian, Eshmaiel

PY - 2019

Y1 - 2019

N2 - The anthropogenic emissions of carbon dioxide (CO2) into the atmosphere is considered as one of the main reasons for global warming. The injection of CO2 into underground formations is an immediate to mid-term option to decrease the level of this gas in the atmosphere. Depleted oil and gas reservoirs are among the best candidates for the carbon capture and storage projects (CCS). The reason for this is based on the well-characterised structure of these type of underground formations through the different periods of their life. One of the most concerned problems associated with CCS projects is CO2 leakage through well cements. Oilwell cements exposed to CO2-bearing fluids undergo geomechanical and geochemical changes which may endanger their integrity. This paper aims at providing a framework to predict the lifespan of a cement exposed to CO2-bearing fluid using numerical modelling based on coupling geochemical and geomechanical processes. The main processes of the radial compaction and the radial cracking are investigated. It was shown that the radial cracking process leads to a definite lifespan of the cement matrix after being exposed to CO2–bearing fluids, while the radial compaction process can increase the durability of the cement matrix. Generally, this process becomes more effective with increasing the radial stress on the cement sheath from the surrounding rocks.

AB - The anthropogenic emissions of carbon dioxide (CO2) into the atmosphere is considered as one of the main reasons for global warming. The injection of CO2 into underground formations is an immediate to mid-term option to decrease the level of this gas in the atmosphere. Depleted oil and gas reservoirs are among the best candidates for the carbon capture and storage projects (CCS). The reason for this is based on the well-characterised structure of these type of underground formations through the different periods of their life. One of the most concerned problems associated with CCS projects is CO2 leakage through well cements. Oilwell cements exposed to CO2-bearing fluids undergo geomechanical and geochemical changes which may endanger their integrity. This paper aims at providing a framework to predict the lifespan of a cement exposed to CO2-bearing fluid using numerical modelling based on coupling geochemical and geomechanical processes. The main processes of the radial compaction and the radial cracking are investigated. It was shown that the radial cracking process leads to a definite lifespan of the cement matrix after being exposed to CO2–bearing fluids, while the radial compaction process can increase the durability of the cement matrix. Generally, this process becomes more effective with increasing the radial stress on the cement sheath from the surrounding rocks.

M3 - Conference proceeding

BT - Fifth International Conference on Sustainable Construction Materials and Technologies (SCMT5)

ER -