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Advances in Geo-Energy Research 2023, 7(2): 90-98 https://doi.org/10.46690/ager.2023.02.03
Original Article | Open Access | Issue | Published: 24 November 2022

Gas production from marine gas hydrate reservoirs using geothermal-assisted depressurization method

Show Author's Information Md Nahin Mahmood ( ),  Boyun Guo
Department of Petroleum Engineering, University of Louisiana, Lafayette, LA 70504, USA
Keywords:
Gas hydrate, geothermal, dissociation temperature, production forecast, depressurization method
Cite this article:
Mahmood MN, Guo B. Gas production from marine gas hydrate reservoirs using geothermal-assisted depressurization method. Advances in Geo-Energy Research, 2023, 7(2): 90-98. https://doi.org/10.46690/ager.2023.02.03
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Abstract Full text About this article

Natural gas production from marine gas hydrate reservoirs has become attractive to the oil and gas industry in recent years. It is still a great challenge to recover natural gas from hydrate reservoirs efficiently mainly due to sand production and wellbore collapse problems associated with the production scheme of depressurization. The thermal recovery method has not been proven economical due to the high cost of energy consumption. This study focuses on using geothermal energy to assist the depressurization process so that well pressure drawdown can be reduced and thus sand production and wellbore collapse problems can be mitigated. The authors investigated the transfer of heat energy from a natural geothermal zone to a marine gas hydrate reservoir and its effect on gas well productivity using analytical models. The result of our investigation shows that the initial well productivity can be significantly improved using geothermal energy more than 10-fold. This work provides engineers with an analytical tool for the feasibility analysis of using geothermal energy to improve well performance in gas hydrate reservoirs.


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About this article

Gas production from marine gas hydrate reservoirs using geothermal-assisted depressurization method

Show Author's information Md Nahin Mahmood ( ), Boyun Guo
Department of Petroleum Engineering, University of Louisiana, Lafayette, LA 70504, USA

Abstract

Natural gas production from marine gas hydrate reservoirs has become attractive to the oil and gas industry in recent years. It is still a great challenge to recover natural gas from hydrate reservoirs efficiently mainly due to sand production and wellbore collapse problems associated with the production scheme of depressurization. The thermal recovery method has not been proven economical due to the high cost of energy consumption. This study focuses on using geothermal energy to assist the depressurization process so that well pressure drawdown can be reduced and thus sand production and wellbore collapse problems can be mitigated. The authors investigated the transfer of heat energy from a natural geothermal zone to a marine gas hydrate reservoir and its effect on gas well productivity using analytical models. The result of our investigation shows that the initial well productivity can be significantly improved using geothermal energy more than 10-fold. This work provides engineers with an analytical tool for the feasibility analysis of using geothermal energy to improve well performance in gas hydrate reservoirs.

Keywords: Gas hydrate, geothermal, dissociation temperature, production forecast, depressurization method

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Publication history

Received: 27 September 2022
Revised: 27 October 2022
Accepted: 20 November 2022
Published: 24 November 2022
Issue date: February 2023

Copyright

© The Author(s) 2022.

Acknowledgements

The authors are grateful to the Chittagong University of Engineering & Technology and the University of Louisiana at Lafayette for their cordial support to this research work.

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Open Access This article is distributed under the terms and conditions of the Creative Commons Attribution (CC BY-NC-ND) license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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