Abstract
Hydrogen is a clean energy and plays an increasingly important role in the energy field. Hydrogen production from natural gas is an important source of hydrogen, but it is also accompanied by carbon emissions. It is beneficial to move the natural gas hydrogen refining site to the underground oil and gas reservoirs that are difficult to develop. The complex reservoir structure of gas reservoir is a challenge to hydrogen production from underground natural gas. In this paper, CMG Stars software is used to simulate methane combustion and in situ hydrogen production reaction in multiple storage media, and explore the influence of geological parameters and injection parameters on hydrogen production efficiency of gas reservoirs. The simulation results show that, the fracture reconstruction area is the main place for hydrogen production reaction, the better hydrogen production efficiency can be obtained when the matrix permeability is less than 0.1 mD, and hydrogen production efficiency can also be improved with the increase of injected oxygen concentration and injection amount. The research results have clarified the reaction space of in-situ hydrogen production from natural gas and the factors affecting the efficiency of underground hydrogen production. It will provide a basic reference for the implementation of this technology..
Copyright 2023, IFEDC Organizing Committee.
This paper was prepared for presentation at the 2023 International Field Exploration and Development Conference in Wuhan, China, 20–22 September 2023.
This paper was selected for presentation by the IFEDC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC Technical Team and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC Technical Committee its members. Papers presented at the Conference are subject to publication review by Professional Team of IFEDC Technical Committee. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of IFEDC Organizing Committee is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC. Contact email: paper@ifedc.org.
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Acknowledgments
The authors thank the Science and Technology Project of Southwest Petroleum University (2021JBGS09), Central Government Funds of Guiding Local Scientific and Technological Development of Sichuan Province (2021ZYD0056) and Special project for the central government to guide the development of local science and technology in Sichuan Province (2021ZYD0099). The authors also thank the anony-mous reviewers for their constructive and valuable comments.
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**, X., Pu, Wf., Bai, Yy., Tang, Xd., Zhao, S. (2024). Numerical Simulation of Hydrogen Production from In-Situ Combustion of Gas Reservoirs. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2023. IFEDC 2023. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-97-0264-0_12
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