A methodology to improve nanosilica based cements used in CO2 sequestration sites
Attempts to reduce the amount of greenhouse gases released into the atmosphere in recent years have led to the development of Carbon Capture and Sequestration (CCS) technology. However, there have been many studies reporting leakages form CO2 storage sites as a result of cement degradation induced b...
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ftdoajarticles:oai:doaj.org/article:f11f9f5e62b54ae0b46f9ced2bad0404 2023-05-15T15:52:56+02:00 A methodology to improve nanosilica based cements used in CO2 sequestration sites Khizar Abid Raoof Gholami Henry Elochukwu Masood Mostofi Chua Han Bing Golam Muktadir 2018-06-01T00:00:00Z https://doi.org/10.1016/j.petlm.2017.10.005 https://doaj.org/article/f11f9f5e62b54ae0b46f9ced2bad0404 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S2405656117301128 https://doaj.org/toc/2405-6561 2405-6561 doi:10.1016/j.petlm.2017.10.005 https://doaj.org/article/f11f9f5e62b54ae0b46f9ced2bad0404 Petroleum, Vol 4, Iss 2, Pp 198-208 (2018) Petroleum refining. Petroleum products TP690-692.5 Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 article 2018 ftdoajarticles https://doi.org/10.1016/j.petlm.2017.10.005 2022-12-31T05:36:10Z Attempts to reduce the amount of greenhouse gases released into the atmosphere in recent years have led to the development of Carbon Capture and Sequestration (CCS) technology. However, there have been many studies reporting leakages form CO2 storage sites as a result of cement degradation induced by generation of an acidic environment in the storage site. Although there are a number of approaches proposed to enhance the efficiency of the cement, the degradation issue has not been totally resolved yet perhaps due to the excessive corrosives nature of carbonic acid and supercritical CO2. The aim of this study is to propose a methodology to improve the physical and mechanical characteristics of the cement by nanomodification such that a consistent rheology, constant density and a good strength development can be achieved. A new dispersion technique was proposed to ensure that the cement formulation gives a consistent result. The results obtained indicated that unlike the literature mixing, cement slurries prepared by the new mixing technique are very consistent in their rheology, regardless of the sonication parameters chosen. The measurements of the compressive strength performed at the reservoir condition revealed that nanosilica contributes in the strength development up to a certain point. Thermogravimetric Analysis (TGA) conducted at the last stage indicated that the amount of Portlandite left in the cement by adding nanosilica is decreased due to the pozzolanic reaction, which would help the cement to have a higher chance of survival in a storage site. However, cautions must be taken to maintain a certain amount of Portlandite in the cement for slowing down the carbonation rate, as otherwise the matrix of the cement is attacked directly and the cement will be degraded very fast. Keywords: Nanosilica, Dispersion method, Class G cement, Rheology, Compressive strength Article in Journal/Newspaper Carbonic acid Directory of Open Access Journals: DOAJ Articles Petroleum 4 2 198 208 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Petroleum refining. Petroleum products TP690-692.5 Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
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Petroleum refining. Petroleum products TP690-692.5 Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 Khizar Abid Raoof Gholami Henry Elochukwu Masood Mostofi Chua Han Bing Golam Muktadir A methodology to improve nanosilica based cements used in CO2 sequestration sites |
topic_facet |
Petroleum refining. Petroleum products TP690-692.5 Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
description |
Attempts to reduce the amount of greenhouse gases released into the atmosphere in recent years have led to the development of Carbon Capture and Sequestration (CCS) technology. However, there have been many studies reporting leakages form CO2 storage sites as a result of cement degradation induced by generation of an acidic environment in the storage site. Although there are a number of approaches proposed to enhance the efficiency of the cement, the degradation issue has not been totally resolved yet perhaps due to the excessive corrosives nature of carbonic acid and supercritical CO2. The aim of this study is to propose a methodology to improve the physical and mechanical characteristics of the cement by nanomodification such that a consistent rheology, constant density and a good strength development can be achieved. A new dispersion technique was proposed to ensure that the cement formulation gives a consistent result. The results obtained indicated that unlike the literature mixing, cement slurries prepared by the new mixing technique are very consistent in their rheology, regardless of the sonication parameters chosen. The measurements of the compressive strength performed at the reservoir condition revealed that nanosilica contributes in the strength development up to a certain point. Thermogravimetric Analysis (TGA) conducted at the last stage indicated that the amount of Portlandite left in the cement by adding nanosilica is decreased due to the pozzolanic reaction, which would help the cement to have a higher chance of survival in a storage site. However, cautions must be taken to maintain a certain amount of Portlandite in the cement for slowing down the carbonation rate, as otherwise the matrix of the cement is attacked directly and the cement will be degraded very fast. Keywords: Nanosilica, Dispersion method, Class G cement, Rheology, Compressive strength |
format |
Article in Journal/Newspaper |
author |
Khizar Abid Raoof Gholami Henry Elochukwu Masood Mostofi Chua Han Bing Golam Muktadir |
author_facet |
Khizar Abid Raoof Gholami Henry Elochukwu Masood Mostofi Chua Han Bing Golam Muktadir |
author_sort |
Khizar Abid |
title |
A methodology to improve nanosilica based cements used in CO2 sequestration sites |
title_short |
A methodology to improve nanosilica based cements used in CO2 sequestration sites |
title_full |
A methodology to improve nanosilica based cements used in CO2 sequestration sites |
title_fullStr |
A methodology to improve nanosilica based cements used in CO2 sequestration sites |
title_full_unstemmed |
A methodology to improve nanosilica based cements used in CO2 sequestration sites |
title_sort |
methodology to improve nanosilica based cements used in co2 sequestration sites |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2018 |
url |
https://doi.org/10.1016/j.petlm.2017.10.005 https://doaj.org/article/f11f9f5e62b54ae0b46f9ced2bad0404 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Petroleum, Vol 4, Iss 2, Pp 198-208 (2018) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2405656117301128 https://doaj.org/toc/2405-6561 2405-6561 doi:10.1016/j.petlm.2017.10.005 https://doaj.org/article/f11f9f5e62b54ae0b46f9ced2bad0404 |
op_doi |
https://doi.org/10.1016/j.petlm.2017.10.005 |
container_title |
Petroleum |
container_volume |
4 |
container_issue |
2 |
container_start_page |
198 |
op_container_end_page |
208 |
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1766388030257496064 |