Advertisement

Theoretical Analysis of Gas Hydrate Dissociation in Sediment

  • X. B. Lu
  • L. Lu
  • X. H. Zhang
  • S. Y. Wang
Conference paper

Abstract

Theoretical analysis was carried out to investigate the dissociation of gas hydrate in stiff sediment. First the mathematical model for gas hydrate dissociation was decoupled by asymptotic expansion method considering the order differences of time scales among seepage, dissociation of gas hydrate and heat conduction. The multi-scale perturbation method was used to solve the problem. It is shown that seepage is the fastest process. The heat conduction is the slowest process. With the pressure decreases at the boundary, pressure changes first while no hydrate dissociation and heat conduction occur. Gradually, dissociation causes the decrease of temperature. After a long time, heat can conduct to cause the increase of temperature. Otherwise, the decreased temperature will cause the stop of dissociation if no heat is supplied in time.

Keywords

Gas hydrate Dissociation Mathematical model 

Notes

Acknowledgement

This project is supported by the Open Research Fund of Shanghai Key Laboratory of Mechanics in Energy Engineering and China natural Science Fund (No.11272314 and No.51239010).

References

  1. 1.
    Jin, Z.H., Johnson, S.E., Cook, A.E.: Crack extension induced by dissociation of fracture-hosted methane gas hydrate. Geophys. Res. Lett. 42(20), 8522–8529 (2015)CrossRefGoogle Scholar
  2. 2.
    Lu, X.B., Wang, L., Wang, S.Y., Li, Q.P.: Instability of seabed and pipes induced by NGH dissociation. In: Proceedings of the Nineteenth International Offshore and Polar Engineering Conference, Beijing, pp. 110–114 (2010)Google Scholar
  3. 3.
    Makogon, Y.F.: Hydrates of Hydrocarbons. Penn Well, Tulsa (1997)Google Scholar
  4. 4.
    Englezos, P.: Reviews: clathrate hydrates. Ind. Eng. Chem. 32, 1251–1274 (1993)CrossRefGoogle Scholar
  5. 5.
    Sloan, E.D.: Clathrate hydrates of natural gases. Marcel Dekker, New York (1998)Google Scholar
  6. 6.
    Selim, M.S., Sloan, E.D.: Heat and mass transfer during the dissociation of hydrates in porous media. AIChE J. 35, 1049–1052 (1989)CrossRefGoogle Scholar
  7. 7.
    Tsypkin, G.: Mathematical models of gas hydrates dissociation in porous media. In: Holder, G.D., Bishnoi, P.R. (eds.) New York Academy of Sciences, New York, pp. 428–436 (2000)CrossRefGoogle Scholar
  8. 8.
    Lu, X.B., Wang, S., Zhang, X., Li, Q.P., Yao, H.Y.: A mathematical model for dissociation of gas hydrate. In: Proceedings of the Nineteenth International Offshore and Polar Engineering Conference, Osaka, Japan (2009)Google Scholar
  9. 9.
    Moridis, G., Apps, J., Pruess, K., Myer, L.: EOSHYDR: a TOUGH2 module for ch4 – hydrate release and flow in the subsurface. Lawrence Berkeley National Laboratory, Berkeley, CA, LBNL-42386 (1998)Google Scholar
  10. 10.
    Swinkels, W.J.A.M., Drenth, R.J.J.: Thermal reservoir simulation model of production from naturally occurring gas hydrate accumulations. In: SPE 56550, Annual Technical Conference, Houston, TX October, pp. 465–477 (1999)Google Scholar
  11. 11.
    Zhang, X.H., Lu, X.B., Li, Q.P.: Thermally induced evolution of phase transformations in gas hydrate sediment. Sci. China Phys. Mech. Astron. 53(8), 1530–1535 (2010)CrossRefGoogle Scholar
  12. 12.
    Ji, C., Ahmadi, G., Smith, D.H.: Natural gas production from hydrate decomposition by depressurization. Chem. Eng. Sci. 56, 5801–5814 (2001)CrossRefGoogle Scholar
  13. 13.
    Hillman, J.I.T., Cook, A.E., Daigle, H., Nole, M., Malinverno, A., Meazell, K., Flemings, P.B.: Gas hydrate reservoirs and gas migration mechanisms in the Terrebonne Basin, Gulf of Mexico. Mar. Pet. Geol. 2017(86), 1357–1373 (2017)CrossRefGoogle Scholar
  14. 14.
    You, K.H., Flemings, P.B.: Methane hydrate formation in in thick sand reservoirs: 1. Short-range diffusion. Mar. Pet. Geol. 89, 428–442 (2018)CrossRefGoogle Scholar
  15. 15.
    Yan, K.X.: Advanced Mechanics of Fluids in Porous Media, University of Science and Technology of China Press, Beijing (1999)Google Scholar
  16. 16.
    Liu, L.L., Lu, X.B., Zhang, X.H.: A theoretical model for predicting the spatial distribution of gas hydrate dissociation under the combination of depressurization and heating without the discontinuous interface assumption. J. Pet. Sci. Eng. 133, 589–601 (2015)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Institute of MechanicsChinese Academy of SciencesBeijingChina
  2. 2.School of ScienceChina University of Mining and TechnologyXuzhouChina
  3. 3.Department of Engineering SciencesUniversity of Chinese Academy of SciencesBeijingChina

Personalised recommendations