Jump to main content
Jump to site search

Issue 5, 2012
Previous Article Next Article

Mechanical properties of clathrate hydrates: status and perspectives

Author affiliations

Abstract

Knowledge of the mechanical properties of clathrate hydrates is central for studying the mechanical properties of hydrate-bearing sediments, their associated applications in wellbore stability, exploitation in stratum deformation, geological disaster prevention, and risk assessment of CO2 buried in oceans. However, because of the limited understanding of hydrate formation conditions and limited methods to investigate these, the understanding of the mechanical properties of hydrates is still poor and even controversial to some extent. This paper reviews current experimental and theoretical results on mechanical properties of hydrates, and discusses the typical difficulties faced in this area. On the experimental side, the most important problem is obtaining pure hydrate samples. Theoretically, the essential origin of the mechanical properties has not been explained in terms of molecular interactions. The hope is to resolve these issues by combining novel macroscopic experiments and microscopic methods. In order to avoid difficulties caused by impurities, it is proposed to use molecular dynamics simulations. This technique can be used to reveal the nature of the mechanical characteristics of hydrates at the molecular and nanometre scale. The goals of this paper are to establish a bridge between the micromechanical nature and the macromechanical properties of hydrates, and to lay a solid theoretical basis for the study of the mechanical properties of hydrate-bearing sediments. These goals are important for the future safe and efficient exploitation of natural hydrates, hydrate-induced seabed geological disaster prevention, the safety of CO2 geological burial, and the deployment of a reliable long-term seabed-borehole coupled hydrate observation system in the integrated Ocean Drilling Program.

Graphical abstract: Mechanical properties of clathrate hydrates: status and perspectives

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 11 Dec 2011, accepted on 08 Feb 2012 and first published on 08 Feb 2012


Article type: Perspective
DOI: 10.1039/C2EE03435B
Citation: Energy Environ. Sci., 2012,5, 6779-6795
  •   Request permissions

    Mechanical properties of clathrate hydrates: status and perspectives

    F. Ning, Y. Yu, S. Kjelstrup, T. J. H. Vlugt and K. Glavatskiy, Energy Environ. Sci., 2012, 5, 6779
    DOI: 10.1039/C2EE03435B

Search articles by author