Investigation of the Effect of Temperature and Grain Size on the Kinetic of Hydrochloric Acid and Calcium Carbonate Reaction as a Simulation of Wellbore Acidizing

Document Type : Research Paper

Authors

1 Department of Petroleum Engineering, Faculty of Chemical Engineering, Tarbiat Modares University of Tehran, Iran.

2 Department of Chemical Engineering, Faculty of Chemical Engineering, Tarbiat Modares University of Tehran, Tehran, Iran.

Abstract

In this study, the significance of temperature within the range of 25 to 70 degrees Celsius and the particle size of calcium carbonate at 237 μm, 348.5 μm, and 497.5 μm on the hydrochloric acid reaction rate with calcium carbonate stone was deliberated. The slow reaction rate helps a retarded action, and therefore, HCl penetrates deeper, and the zones farther from the wellbore will be affected by the acidizing. Therefore, the exploration of variables influencing the reaction rate holds considerable significance. The reaction rate is controlled by influential factors such as temperature and particle size, where the effect of these two factors is discussed in detail. According to the empirical findings, the reaction rate exhibits an upward trend as temperature rises and as the size of calcium carbonate particles decreases. It is worth mentioning that the highest and lowest reaction rates were observed at temperatures of 70 and 25 degrees Celsius, and with calcium carbonate particle sizes of 237 and 497.5 micrometers, respectively. Consequently, this research, considering the examined parameters and the obtained results, contributes to a better understanding and more efficient design of the acidizing process.

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Main Subjects

References

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Journal of Chemical and Petroleum Engineering
Volume 57, Issue 2
December 2023
Pages 391-399

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History

  • Receive Date: 24 June 2023
  • Revise Date: 28 October 2023
  • Accept Date: 29 October 2023

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