Gas hydrate accumulation in pores during compaction of growing sediments in the condition of rheological layered non-uniform sedimentation

Category: 14-1
E.I. Suetnova



UDC 550.31


E.I. Suetnova


Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia



Peculiarity of the evolution of gas hydrate accumulation in ocean floor was investigated by the numerical modeling for the case of sequential deposition of sediment material with different effective viscosity. Model calculations show that the decreasing of viscosity of sediments which precipitates on to sea floor after certain time essentially increases the rate of gas hydrate accumulation from dissolved gas. This value increases nonlinearly with respect to decreasing of effective viscosity and time.

Keywords: sedimentation, gas hydrate, compaction, rheology, numerical modeling.



BenClennell, M., Hovland, M., Booth, J.S., Henry, P., and Winters, W.J., Formation of natural gas hydrates in marine sediments. 1. Conceptual model, J. Geophys. Res., 1999, vol. 104, no B10, pp. 22985–23003.

Davie, M.K. and Buffett, B.A. Sources of methane for marine gas hydrate: inferences from a comparison of observations and numerical models, Earth Planet. Sci. Lett., 2003, vol. 206, no 1/2, pp. 51–63.

Davie, M.K. and Buffett, B.A., A numerical model for the formation of gas hydrate below the seafloor, J. Geophys. Res., 2001, vol. 106, no. B1, pp. 497–514.

Davie, M.K., Zatsepina, O.Ye., and Buffet, B.A. Methane solubility in marine hydrate environments, Marine Geology, 2004, vol. 203, pp. 177–184.

Ginsburg, G. D. and Solov’ev, V. A., Submarine Gas Hydrates (VNII Okeangeologiya, 1994) [in Russian].

Hyndman, R.D. and Davis, E.E. A mechanism for the formation of methane hydrate and seafloor bottom simulating reflectors by vertical expulsion, J. Geophys. Res., 1992, vol. 97, pp. 7025–7041.

Liu, X. and Flemings, P.B., Dynamic multiphase flow model of hydrate formation in marine Sediments, J. Geophys. Res., 2007, vol. 112, no. B03.101, Doi:10.1029/2005JB004227.

Rempel, A.W. and Buffet, B.A., Formation and accumulation of gas hydrates in porous media, J. Geophys. Res., 1997, vol. 102, no. B5, pp.10151–10164.

Sloan, E.D., Clathrate Hydrates of Natural Gases, N.Y.: Marcel Dekker, 1998.

Suetnova E.I., Accumulation of gas hydrates at the bottom of the sea during sequential deposits of sediments with different transport properties, Doklady Earth Sciences, 2011, vol. 438, no.2, pp. 883-886.

Suetnova, E.I. and Vasseur, G., 1-D Modelling rock compaction in sedimentary basin using visco-elastic rheology, Earth Planet. Sci. Lett., 2000, vol. 178, pp. 373–383.

Suetnova, E.I., Accumulation of gas hydrates and compaction of accumulated sediments: The problem of interrelation between the processes, Doklady Earth Sciences, 2007, vol. 415, no 2, pp. 979-983.

Suetnova, E.I., Influence of rheologic and hydrodynamic properties of accumulating precipitation on compaction and hydrate formation (based on numerical modeling), Izvestiya VUZov Seriya Geologiya i razvedka (HEI News, Geology and Prospection series), 2009, no. 1, pp. 52-55.

Suetnova, E.I., Influence of the sedimentation regime and compaction of sediments under subaqueous conditions on the accumulation of gas hydrates in the zone of their stability, Izv. Phys. Solid Earth, 2008, vol. 44, no 9, pp. 748-753.

Suetnova, E.I., Viscoelastic compaction of heterogeneous sediments, Izv. Phys. Solid Earth, 2003, vol. 39, no 1, pp. 71-77.

Xu, W. and Ruppel, B.A., Predicting the occurrence, distribution, and evolution of methane gas hydrate in porous marine sediments, J. Geophys. Res., 1999, vol. 104, no B3, pp. 5081–5095.


Zatsepina, O.Ye. and Buffett, B.A., Phase equilibrium of gas hydrate: implication for the formation of hydrate in the deep sea floor, Geophys. Res. Lett., 1997, vol. 24, no 13, pp.1567–1570.