Experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressure
In order to study the effect of supercritical carbon dioxide (ScCO2) on the mechanical properties of granite located in and near the core of the CO2-based enhanced geothermal system (EGS) region, fluid–rock interaction experiments were conducted at 210, 240 and 270 ℃. Three test conditions were used...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717
2022-02-01
|
| Series: | Rock and Soil Mechanics |
| Subjects: | |
| Online Access: | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6165 |
| _version_ | 1818150249303113728 |
|---|---|
| author | XUE Hui SHU Biao1 CHEN Jun-jie LU Wei HU Yong-peng WANG Yi-min ZENG Fan HUANG Ruo-chen |
| author_facet | XUE Hui SHU Biao1 CHEN Jun-jie LU Wei HU Yong-peng WANG Yi-min ZENG Fan HUANG Ruo-chen |
| author_sort | XUE Hui |
| collection | DOAJ |
| description | In order to study the effect of supercritical carbon dioxide (ScCO2) on the mechanical properties of granite located in and near the core of the CO2-based enhanced geothermal system (EGS) region, fluid–rock interaction experiments were conducted at 210, 240 and 270 ℃. Three test conditions were used: (1) ScCO2 and dry granite; (2) ScCO2, water vapor and granite; and (3) ScCO2 and granite soaked in water for 24 h. The P-wave velocity, uniaxial compressive strength (UCS), and Young’s modulus of all ScCO2- treated granite samples and one untreated granite sample were obtained by carrying out the wave velocity tests and uniaxial compression tests. The wave velocity tests showed that the P-wave velocities of all ScCO2-treated granite samples were reduced compared to that of the untreated sample. The uniaxial compression test showed that the UCS and Young’s modulus were almost not affected. From the failure mode, it can be seen that the untreated granite more likely presented the brittle tensile failure, while the treated sample showed more likely shear failure. As the temperature increased, the failure mode became more and more close to shear failure. Experimental results showed that the ScCO2 induced slight damage to the granite under dry or a little water condition, causing a slight decrease in the brittleness, and a small increase in the plasticity. The P-wave velocity decreased slightly and the impact on the granite strength can be negligible. Therefore, the interaction of CO2–rock will not cause obvious effect on the mechanical properties of granite located in and near the core of the CO2–EGS region. |
| first_indexed | 2024-12-11T13:19:56Z |
| format | Article |
| id | doaj.art-5a49d4016c1348c495cd5d60540b26ee |
| institution | Directory Open Access Journal |
| issn | 1000-7598 |
| language | English |
| last_indexed | 2024-12-11T13:19:56Z |
| publishDate | 2022-02-01 |
| publisher | SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717 |
| record_format | Article |
| series | Rock and Soil Mechanics |
| spelling | doaj.art-5a49d4016c1348c495cd5d60540b26ee2022-12-22T01:05:53ZengSCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717Rock and Soil Mechanics1000-75982022-02-0143237738410.16285/j.rsm.2021.6165Experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressureXUE HuiSHU Biao1CHEN Jun-jie0LU Wei1HU Yong-peng2WANG Yi-min3ZENG Fan4HUANG Ruo-chen51. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha, Hunan 410083; China 2. School of Geosciences and Info-physics, Central South University, Changsha, Hunan 410083, China1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha, Hunan 410083; China 2. School of Geosciences and Info-physics, Central South University, Changsha, Hunan 410083, China1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha, Hunan 410083; China 2. School of Geosciences and Info-physics, Central South University, Changsha, Hunan 410083, China1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha, Hunan 410083; China 2. School of Geosciences and Info-physics, Central South University, Changsha, Hunan 410083, China1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha, Hunan 410083; China 2. School of Geosciences and Info-physics, Central South University, Changsha, Hunan 410083, China1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha, Hunan 410083; China 2. School of Geosciences and Info-physics, Central South University, Changsha, Hunan 410083, ChinaIn order to study the effect of supercritical carbon dioxide (ScCO2) on the mechanical properties of granite located in and near the core of the CO2-based enhanced geothermal system (EGS) region, fluid–rock interaction experiments were conducted at 210, 240 and 270 ℃. Three test conditions were used: (1) ScCO2 and dry granite; (2) ScCO2, water vapor and granite; and (3) ScCO2 and granite soaked in water for 24 h. The P-wave velocity, uniaxial compressive strength (UCS), and Young’s modulus of all ScCO2- treated granite samples and one untreated granite sample were obtained by carrying out the wave velocity tests and uniaxial compression tests. The wave velocity tests showed that the P-wave velocities of all ScCO2-treated granite samples were reduced compared to that of the untreated sample. The uniaxial compression test showed that the UCS and Young’s modulus were almost not affected. From the failure mode, it can be seen that the untreated granite more likely presented the brittle tensile failure, while the treated sample showed more likely shear failure. As the temperature increased, the failure mode became more and more close to shear failure. Experimental results showed that the ScCO2 induced slight damage to the granite under dry or a little water condition, causing a slight decrease in the brittleness, and a small increase in the plasticity. The P-wave velocity decreased slightly and the impact on the granite strength can be negligible. Therefore, the interaction of CO2–rock will not cause obvious effect on the mechanical properties of granite located in and near the core of the CO2–EGS region.http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6165supercritical carbon dioxideenhanced geothermal systemgranitehigh temperature and high pressuremechanical property |
| spellingShingle | XUE Hui SHU Biao1 CHEN Jun-jie LU Wei HU Yong-peng WANG Yi-min ZENG Fan HUANG Ruo-chen Experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressure Rock and Soil Mechanics supercritical carbon dioxide enhanced geothermal system granite high temperature and high pressure mechanical property |
| title | Experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressure |
| title_full | Experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressure |
| title_fullStr | Experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressure |
| title_full_unstemmed | Experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressure |
| title_short | Experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressure |
| title_sort | experimental study on mechanical properties of granite after reaction with supercritical carbon dioxide at high temperature and high pressure |
| topic | supercritical carbon dioxide enhanced geothermal system granite high temperature and high pressure mechanical property |
| url | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6165 |
| work_keys_str_mv | AT xuehui experimentalstudyonmechanicalpropertiesofgraniteafterreactionwithsupercriticalcarbondioxideathightemperatureandhighpressure AT shubiao1 experimentalstudyonmechanicalpropertiesofgraniteafterreactionwithsupercriticalcarbondioxideathightemperatureandhighpressure AT chenjunjie experimentalstudyonmechanicalpropertiesofgraniteafterreactionwithsupercriticalcarbondioxideathightemperatureandhighpressure AT luwei experimentalstudyonmechanicalpropertiesofgraniteafterreactionwithsupercriticalcarbondioxideathightemperatureandhighpressure AT huyongpeng experimentalstudyonmechanicalpropertiesofgraniteafterreactionwithsupercriticalcarbondioxideathightemperatureandhighpressure AT wangyimin experimentalstudyonmechanicalpropertiesofgraniteafterreactionwithsupercriticalcarbondioxideathightemperatureandhighpressure AT zengfan experimentalstudyonmechanicalpropertiesofgraniteafterreactionwithsupercriticalcarbondioxideathightemperatureandhighpressure AT huangruochen experimentalstudyonmechanicalpropertiesofgraniteafterreactionwithsupercriticalcarbondioxideathightemperatureandhighpressure |