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Explicitly Coupled Thermal Flow Mechanical Formulation for Gas-Hydrate Sediments
- Assaf Klar (Technion - Israel Institute of Technology) | Shun Uchida (Cambridge University) | Kenichi Soga (Cambridge University) | Koji Yamamoto (Japan Oil, Gas and Metals National Corporation)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- January 2013
- Document Type
- Journal Paper
- 196 - 206
- 2013. Society of Petroleum Engineers
- 5.9.1 Gas hydrates
- 3 in the last 30 days
- 357 since 2007
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This paper presents an explicit time-marching formulation for the solution of the coupled thermal flow mechanical behavior of gas hydrate sediment. The formulation considers the soil skeleton as a deformable elastoplastic continuum, with an emphasis on the effect of hydrate (and its dissociation) on the stress-strain behavior of the soil. In the formulation, the hydrate is assumed to deform with the soil and may dissociate into gas and water. The formulation is explicitly coupled, such that the changes in temperature because of energy flow and hydrate dissociation affect the skeleton stresses and fluid (water and gas) pressures. This, in return, affects the mechanical behavior. A simulation of a vertical well within a layered soil is presented. It is shown that the heterogeneity of hydrate saturation causes different rates of dissociation in the layers. The difference alters the overall gas production and also the mechanical-deformation pattern, which leads to loading/unloading shearing along the interfaces between the layers.
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Kim, J., Tchelepi, H.A., and Juanes, R. 2011b. Rigorous Coupling ofGeomechanics and Multiphase Flow with Strong Capillarity. Paper SPE 141268presented at the SPE Reservoir Simulation Symposium, The Woodlands, Texas, USA,21-23 February. http://dx.doi.org/10.2118/141268-MS.
Kim, J., Tchelepi, H.A., and Juanes, R. 2011c. Stability, Accuracy, andEfficiency of Sequential Methods for Coupled Flow and Geomechanics. SPEJ. 16 (2): 249-262. SPE-119084-PA. http://dx.doi.org/10.2118/119084-PA.
Kim, J., Tchelepi, H.A., and Juanes, R. 2011d. Stability and convergence ofsequential methods for coupled flow and geomechanics: Drained and undrainedsplits. Comput. Meth. Appl. Mech. Eng. 200 (23-24):2094-2116. http://dx.doi.org/10.1016/j.cma.2011.02.011.
Klar, A. and Soga, K. 2005. Coupled Deformation-Flow Analysis for MethaneHydrate Production by Depressurized Wells. Proc., 3rd Biot Conference onPoromechanics, Norman, Oklahoma, USA, 24-27 May, 652-659.
Klar, A., Soga., K., and Ng, M.Y.A. 2010. Coupled deformation-flow analysisfor methane hydrate extraction. Géotechnique 60 (10):765-776 http://dx.doi.org/10.1680/geot.9.P.079-3799.
Kurihara, M., Sato, A., Funatsu, K. et al. 2010. Analysis of Production Datafor 2007/2008 Mallik Gas Hydrate Production Tests in Canada. Paper SPE 132155presented at the International Oil and Gas Conference and Exhibition in China,Beijing, 8-10 June. http://dx.doi.org/10.2118/132155-MS.
Masuda, Y., Kurihara, M., Ohuchi, H. et al. 2002. A Field-Scale SimulationStudy on Gas Productivity of Formations Containing Gas Hydrates. Proc.,Fourth International Conference on Gas Hydrates, Yokohama, Japan, 19-23 May,40-46.
Masui, A., Haneda, H., Ogata, Y. et al. 2005. The effect of saturationdegree of methane hydrate on the shear strength of synthetic methane hydratesediments. Proc., 5th International Conference on Gas Hydrates (ICGH 5),Trondheim, Norway, Paper 2037, 657-663.
Minagawa, H., Ohmura, R., Kamata, J. et al. 2005. Water permeabilitymeasurements of gas hydrate-bearing sediments. Proc., FifthInternational Conference on Gas Hydrates (ICGH 5), Trondheim, Norway, 13-16June, Paper 1058, 398-401.
Moridis, G.J., Collett, T.S., Boswell, R. et al. 2009. Toward ProductionFrom Gas Hydrates: Current Status, Assessment of Resources, andSimulation-Based Evaluation of Technology and Potential. SPE J. 12 (5): 745-771. SPE-114163-PA. http://dx.doi.org/10.2118/114163-PA.
Moridis, G.J., Kowalsky, M., and Pruess, K. 2005. TOUGH-Fx/HYDRATE v1.0User's Manual: A Code for the Simulation of System Behavior in Hydrate-BearingGeologic Media. Technical Report LBNL/PUB 3185, Lawrence Berkeley NationalLaboratory, Berkeley, California.
Ng, M.Y.A., Klar, A., and Soga, K. 2008. Coupled SoilDeformation-Flow-Thermal Analysis of Methane Production in Layered MethaneHydrate Soils. Paper OTC 19364 presented at the Offshore Technology Conference,Houston, 5-8 May. http://dx.doi.org/10.4043/19364-MS.
Ng, M.Y.A., Klar, A., Soga, K. et al. 2006. Physical and numerical modelingof horizontal gas hydrate wells. Proc., 6th International Conference ofPhysical Modelling in Geotechnics, Hong Kong, 4-6 August, Vol. 2,1501-1506.
Paull, C., Reeburgh, W.S., Dallimore, S.R. et al. 2010. Realizing theEnergy Potential of Methane Hydrate for the United States. Washington, DC:The National Academies Press.
Rutqvist, J. and Moridis, G.J. 2009. Numerical Studies on the GeomechanicalStability of Hydrate-Bearing Sediments. SPE J. 14 (2):267-282. SPE-126129-PA. http://dx.doi.org/10.2118/126129-PA.
Rutqvist, J., Moridis, G.J., and Chiaramonte, L. 2010. A Modeling Study ofGeomechanical Performance of Sloping Oceanic Hydrate Deposits SubjectedProduction Activities. Paper OTC 21048 presented at the Offshore TechnologyConference, Houston, 3-6 May. http://dx.doi.org/10.4043/21048-MS.
Rutqvist, J., Moridis, G.J., Grover, T. et al. 2009. Geomechanical responseof permafrost-associated hydrate deposits to depressurization-induced gasproduction. J. Pet. Sci. Eng. 67 (1-2): 1-12. http://dx.doi.org/10.1016/j.petrol.2009.02.013.
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Soga, K., Lee, S.L., Ng, M.Y.A. et al. 2007. Characterisation andengineering properties of Methane hydrate soils. In Characterisation andEngineering Properties of Natural Soils, ed. T.S. Tan, K.-K. Phoon, D.Hight, and S. Leroueil, Vol. 4, 2591-2642. London: Taylor & Francis.
Uchida, S., Soga, K., and Yamamoto, K. 2012. Critical state soilconstitutive model for methane hydrate soil. J. Geophys. Res. 117 (B3): B03209. http://dx.doi.org/10.1029/2011jb008661.
van Genuchten, M.T. 1980. A Closed-Form Equation for Predicting theHydraulic Conductivity of Unsaturated Soils. Soil Sci. Soc. Am. J. 44: 892-898.
Waite, W.F., Santamrina, J.C., Cortes, D.D. et al. 2009. Physical propertiesof hydrate-bearing sediments. Rev. Geophys. 47: RG4003. http://dx.doi.org/10.1029/2008RG000279.
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Wilder, J., Moridis, G., Wilson, S. et al. 2008. An International Effort toCompare Gas Hydrate Reservoir Simulators. Paper presented at the 6thInternational Conference on Gas Hydrates (ICGH 2008), Vancouver, BritishColumbia, Canada, 6-10 July.
Yamamoto, K. and Dallimore, S. 2008. Aurora-JOGMEC-NRCan Mallik 2006-2008Gas Hydrate Research Project progress. Fire In The Ice (The National EnergyTechnology Laboratory Methane Hydrate Newsletter) Summer 2008:1-5.
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