Mechanisms of methane hydrate formation in geological systems

Reviews of Geophysics
By: , and 



Natural gas hydrates are ice-like mixtures of gas (mostly methane) and water that are widely found in sediments along the world’s continental margins and within and beneath permafrost in a near-surface depth interval where the pressure is sufficiently high and temperature sufficiently low for gas hydrate to be stable. Beneath this interval, gas hydrate is not stable and free gas may be present. This paper reviews the multiple quantitative models that have proposed to describe the genesis of gas hydrate in geological systems. We emphasize the importance of coupling multi-phase flow (vapor and liquid) and multicomponent reactive transport with geological history to describe the dynamical processes of gas hydrate formation and evolution in geological systems. By understanding the generation and evolution of gas hydrate through time, we will better understand their role in the carbon cycle, their potential to contribute to climate change and geohazards, and how to design optimal strategies for the environmentally safe production of gas from hydrate reservoirs.
Publication type Article
Publication Subtype Journal Article
Title Mechanisms of methane hydrate formation in geological systems
Series title Reviews of Geophysics
DOI 10.1029/2018RG000638
Volume 57
Issue 4
Year Published 2019
Language English
Publisher AGU
Contributing office(s) Central Energy Resources Science Center
Description 51 p.
First page 1146
Last page 1196
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