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Investigation of the Temperature Dependence of the Chemical–Mechanical Properties of the Wufeng–Longmaxi Shale
[Image: see text] Shale rocks have been widely investigated to evaluate the productivity of oil/gas. The high temperature generated by the explosive fracturing to stimulate the gas reservoir has a significant impact on the chemical–mechanical properties of shale rocks. Pioneering works have been car...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9753528/ https://www.ncbi.nlm.nih.gov/pubmed/36530324 http://dx.doi.org/10.1021/acsomega.2c03575 |
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author | Yu, Xu Zhai, Cheng Jing, Yu Sang, Shuxun Wang, Yu Regenauer-Lieb, Klaus Sun, Yong |
author_facet | Yu, Xu Zhai, Cheng Jing, Yu Sang, Shuxun Wang, Yu Regenauer-Lieb, Klaus Sun, Yong |
author_sort | Yu, Xu |
collection | PubMed |
description | [Image: see text] Shale rocks have been widely investigated to evaluate the productivity of oil/gas. The high temperature generated by the explosive fracturing to stimulate the gas reservoir has a significant impact on the chemical–mechanical properties of shale rocks. Pioneering works have been carried out at temperatures below 500 °C, but little has been done to quantify the correlation between the chemical and mechanical properties of shale at temperatures above 500 °C. Therefore, an experimental study on the effect of temperature on the chemical–mechanical properties of shale rocks is presented in this paper. The temperatures used in our experiments are between 0 and 800 °C. Results indicate that there exist strong chemical reactions leading to a big reduction in the sample’s weight and mechanical strength for a temperature over 500 °C. Thermogravimetric analysis data demonstrates that the weight of shale powders has little change below 400 °C and largely decreases after 600 °C. It shows that the chemical reaction rate corresponding to shale compositions varies with temperature. X-ray diffraction and Fourier transform infrared are integrated to quantify the occurrence of contained reactions including the decomposition of kerogen, carbonates, and quartz transition. This can provide a temperature range for all possible reactions. Changes in the compositional information of shale samples have been proven to significantly influence the mechanical properties. A 25% decrease in dynamic Young’s modulus emerges as the temperature approaches 700 °C. As the brittle minerals, for instance, carbonates, decrease with temperature, a brittle-ductile transition happens in shale. This work provides very meaningful results different from that at low temperatures to help people better understand the effects of high temperatures in many fields, such as explosive fracturing and radioactive waste disposal. |
format | Online Article Text |
id | pubmed-9753528 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-97535282022-12-16 Investigation of the Temperature Dependence of the Chemical–Mechanical Properties of the Wufeng–Longmaxi Shale Yu, Xu Zhai, Cheng Jing, Yu Sang, Shuxun Wang, Yu Regenauer-Lieb, Klaus Sun, Yong ACS Omega [Image: see text] Shale rocks have been widely investigated to evaluate the productivity of oil/gas. The high temperature generated by the explosive fracturing to stimulate the gas reservoir has a significant impact on the chemical–mechanical properties of shale rocks. Pioneering works have been carried out at temperatures below 500 °C, but little has been done to quantify the correlation between the chemical and mechanical properties of shale at temperatures above 500 °C. Therefore, an experimental study on the effect of temperature on the chemical–mechanical properties of shale rocks is presented in this paper. The temperatures used in our experiments are between 0 and 800 °C. Results indicate that there exist strong chemical reactions leading to a big reduction in the sample’s weight and mechanical strength for a temperature over 500 °C. Thermogravimetric analysis data demonstrates that the weight of shale powders has little change below 400 °C and largely decreases after 600 °C. It shows that the chemical reaction rate corresponding to shale compositions varies with temperature. X-ray diffraction and Fourier transform infrared are integrated to quantify the occurrence of contained reactions including the decomposition of kerogen, carbonates, and quartz transition. This can provide a temperature range for all possible reactions. Changes in the compositional information of shale samples have been proven to significantly influence the mechanical properties. A 25% decrease in dynamic Young’s modulus emerges as the temperature approaches 700 °C. As the brittle minerals, for instance, carbonates, decrease with temperature, a brittle-ductile transition happens in shale. This work provides very meaningful results different from that at low temperatures to help people better understand the effects of high temperatures in many fields, such as explosive fracturing and radioactive waste disposal. American Chemical Society 2022-11-28 /pmc/articles/PMC9753528/ /pubmed/36530324 http://dx.doi.org/10.1021/acsomega.2c03575 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Yu, Xu Zhai, Cheng Jing, Yu Sang, Shuxun Wang, Yu Regenauer-Lieb, Klaus Sun, Yong Investigation of the Temperature Dependence of the Chemical–Mechanical Properties of the Wufeng–Longmaxi Shale |
title | Investigation of
the Temperature Dependence of the
Chemical–Mechanical Properties of the Wufeng–Longmaxi
Shale |
title_full | Investigation of
the Temperature Dependence of the
Chemical–Mechanical Properties of the Wufeng–Longmaxi
Shale |
title_fullStr | Investigation of
the Temperature Dependence of the
Chemical–Mechanical Properties of the Wufeng–Longmaxi
Shale |
title_full_unstemmed | Investigation of
the Temperature Dependence of the
Chemical–Mechanical Properties of the Wufeng–Longmaxi
Shale |
title_short | Investigation of
the Temperature Dependence of the
Chemical–Mechanical Properties of the Wufeng–Longmaxi
Shale |
title_sort | investigation of
the temperature dependence of the
chemical–mechanical properties of the wufeng–longmaxi
shale |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9753528/ https://www.ncbi.nlm.nih.gov/pubmed/36530324 http://dx.doi.org/10.1021/acsomega.2c03575 |
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