Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures
Aiming at improving the acid fracturing effect of carbonate reservoirs at high temperatures, reaction kinetics and acid fracture conductivity of five high-temperature sustained-release acids were investigated. The experimental results show that viscous acid, gelled acid II, authigenic acid I, and ge...
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sg-ntu-dr.10356-1636482022-12-13T05:33:38Z Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures Sui, Yu Cao, Guangsheng Guo, Tianyue Zhang, Zihang Bai, Yujie Wu, Jiajun Yao, Liming School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering High-Temperature Sustained-Release Acid Reaction Kinetics Aiming at improving the acid fracturing effect of carbonate reservoirs at high temperatures, reaction kinetics and acid fracture conductivity of five high-temperature sustained-release acids were investigated. The experimental results show that viscous acid, gelled acid II, authigenic acid I, and gelled acid I have the highest rate constant, respectively. It was found that as the temperature increases, the reaction order of gelled acid I, viscous acid, and authigenic acid II decreases, while the reaction order of gelled acid II and authigenic acid I increase first and then decreases. Among the studied cases, the maximum reaction rate is 4.46 × 10-5 mol/(L·s), which was achieved in gelled acid I. Variations of the reaction rate indicate that gelled acid I is in the "saturation state of the reaction''. At a closing pressure of 40 MPa and a temperature of 150 °C, the acid corrosion fracture conductivity of gelled acid I is the largest, reaching 7.45 × 10-2 μm2 m, the fracture conductivity of authigenic acid I was higher than that of autogenic acid II, and the conductivity of the viscous acid was the lowest. Published version 2022-12-13T05:33:37Z 2022-12-13T05:33:37Z 2022 Journal Article Sui, Y., Cao, G., Guo, T., Zhang, Z., Bai, Y., Wu, J. & Yao, L. (2022). Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures. Case Studies in Thermal Engineering, 38, 102336-. https://dx.doi.org/10.1016/j.csite.2022.102336 2214-157X https://hdl.handle.net/10356/163648 10.1016/j.csite.2022.102336 2-s2.0-85136961534 38 102336 en Case Studies in Thermal Engineering © 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). application/pdf |
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Engineering::Mechanical engineering High-Temperature Sustained-Release Acid Reaction Kinetics Sui, Yu Cao, Guangsheng Guo, Tianyue Zhang, Zihang Bai, Yujie Wu, Jiajun Yao, Liming Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures |
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Aiming at improving the acid fracturing effect of carbonate reservoirs at high temperatures, reaction kinetics and acid fracture conductivity of five high-temperature sustained-release acids were investigated. The experimental results show that viscous acid, gelled acid II, authigenic acid I, and gelled acid I have the highest rate constant, respectively. It was found that as the temperature increases, the reaction order of gelled acid I, viscous acid, and authigenic acid II decreases, while the reaction order of gelled acid II and authigenic acid I increase first and then decreases. Among the studied cases, the maximum reaction rate is 4.46 × 10-5 mol/(L·s), which was achieved in gelled acid I. Variations of the reaction rate indicate that gelled acid I is in the "saturation state of the reaction''. At a closing pressure of 40 MPa and a temperature of 150 °C, the acid corrosion fracture conductivity of gelled acid I is the largest, reaching 7.45 × 10-2 μm2 m, the fracture conductivity of authigenic acid I was higher than that of autogenic acid II, and the conductivity of the viscous acid was the lowest. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Sui, Yu Cao, Guangsheng Guo, Tianyue Zhang, Zihang Bai, Yujie Wu, Jiajun Yao, Liming |
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Article |
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Sui, Yu Cao, Guangsheng Guo, Tianyue Zhang, Zihang Bai, Yujie Wu, Jiajun Yao, Liming |
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Sui, Yu |
title |
Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures |
title_short |
Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures |
title_full |
Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures |
title_fullStr |
Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures |
title_full_unstemmed |
Evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures |
title_sort |
evaluation of deep penetration of high-temperature sustained-release acid based on the reaction kinetics and conductivity of acid-etched fractures |
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2022 |
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https://hdl.handle.net/10356/163648 |
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1753801122242363392 |