Origin and significance of methane hydrates and their generation under laboratory conditions

Marko Uzelac¹, Tomislav Malvić¹, Luka Uzelac¹, Borivoje Pašić¹

¹Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Zagreb, Croatia

Min. miner. depos. 2026, 20(1):142-150

https://doi.org/10.33271/mining20.01.140

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ABSTRACT

Purpose. The purpose of this paper is to present a conceptual design for laboratory-scale equipment for the controlled generation and investigation of small quantities of methane hydrate under variable pressure, temperature, and lithological conditions, enabling reproducible experimental studies that simulate natural methane hydrate formation environments.

Methods. The study includes a review of recent global research and pilot-scale activities related to methane hydrate exploration, occurrence, and production. Key geological and thermodynamic conditions governing methane hydrate formation are summarized. Based on this background, an engineering concept for a laboratory apparatus is developed, including a high-pressure chamber, a gas compression system, and a temperature control unit, designed to operate within the methane hydrate stability zone.

Findings. The proposed apparatus is compact, modular, and suitable for installation in standard university laboratory conditions. It allows controlled variation of pressure and temperature parameters required for methane hydrate formation while maintaining operational safety and repeatability. The design relies on commercially available components and can be assembled with relatively modest financial and technical resources.

Originality. The presented solution is a practical, cost-effective alternative to complex, expensive laboratory systems commonly used for methane hydrate research. Its originality lies in integrating accessible industrial components into a simplified experimental setup capable of reproducing key conditions for methane hydrate formation in controlled laboratory settings.

Practical implications. The proposed laboratory system provides researchers, educators, and students with a flexible experimental platform for studying methane hydrates in water or porous media. It supports interdisciplinary research in geosciences, energy engineering, and environmental studies, and can be effectively used for academic training and experimental research.

Keywords: methane hydrates; gas hydrate stability zone; unconventional gas reservoirs; laboratory equipment

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