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Thermodynamic Analysis of Oilwell Set-cement Degradation under Carbon Dioxide Sequestration Condition
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Xinyang GUO, Yuyuan SONG, Guangjun WU, Yuhuan BU
Journal of the Chinese Ceramic Society | 2020, 48(8) : 1233 - 1239
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Journal of the Chinese Ceramic Society | 2020, 48(8): 1233-1239
• Research Articles •
Thermodynamic Analysis of Oilwell Set-cement Degradation under Carbon Dioxide Sequestration Condition
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Xinyang GUO, Yuyuan SONG, Guangjun WU, Yuhuan BU
Affiliations
  • Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, Shandong, China

    • GUO Xinyang (1983-), male, Ph.D., Senior Experimentalist. E-mail:

About Author:

GUO Xinyang (1983-), male, Ph.D., Senior Experimentalist. E-mail:

Published: 2020-08-20 doi: 10.14062/j.issn.0454-5648.20200114
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For the degradation of oil well set-cement under CO2 sequestration condition, the thermodynamic conditions of pure minerals related to hydration products degradation were determined based on the equilibrium constant theory, and the resistance difference was investigated. The mass change of hydration products was simulated based on the Gibbs free energy minimization principle. The results show that the order of degradation resistance of related pure minerals or end members is 4Mg(OH)2·2Al(OH)3·3H2O, 0.83CaO·0.67SiO2·1.83H2O, 0.67CaO·SiO2·1.5H2O, 6CaO·Al2O3·3SO4·32H2O, 6CaO·Al2O3·3SO4·30H2O, 1.33CaO·SiO2·2.17H2O, 3CaO·0.5Al2O3·0.5Fe2O3·0.84SiO2·4.32H2O, 3CaO·Fe2O3·0.84SiO2·4.32H2O, 1.5CaO·0.67SiO2·2.5H2O, Ca(OH)2. The order of mass decrease in set-cement degradation process is Ca(OH)2, calcium silicate hydrate solid solution, Si-hydrogarnet solid solution, ettringite solid solution, and M4AH10. The number of moles and the proportion of end member minerals changes and the quality of solid solution decreases, but the change is inconsistent with its relative degradation resistance.

carbon dioxide sequestration  /  oilwell set-cement  /  degradation  /  equilibrium constant  /  Gibbs free energy  /  minimization principle
郭辛阳, 宋雨媛, 吴广军, 步玉环. 二氧化碳埋存条件下油井水泥石腐蚀的热力学分析. 硅酸盐学报, 2020 , 48 (8) : 1233 -1239 . DOI: 10.14062/j.issn.0454-5648.20200114
Xinyang GUO, Yuyuan SONG, Guangjun WU, Yuhuan BU. Thermodynamic Analysis of Oilwell Set-cement Degradation under Carbon Dioxide Sequestration Condition[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (8) : 1233 -1239 . DOI: 10.14062/j.issn.0454-5648.20200114
Appendix
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Year 2020 volume 48 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20200114
  • Receive Date：2020-02-27
  • Online Date：2026-10-29
  • Published：2020-08-20
Article Data
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History
  • Received：2020-02-27
  • Revised：2020-04-07
Funding
Affiliations
    Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, Shandong, China
References
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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