Golmshtok-2014-The impact of faulting on the s(8)

(3) Dissociation of gas hydrates in sediments due tofaulting and the subsequent ascent of the products of

IZVESTIYA, PHYSICS OF THE SOLID EARTH Vol. 50 hydrate dissociation towards the lake bottom throughthe incipient channel can lead to the formation of alarge near??bottom hydrate accumulation.(4) The amount of the free gas that leaves thehydrate dissociation zone, if converted to the standardpressure and temperature and with the assumptionthat the whole of the gas reaches the lake surface, canbe equivalent to the resources of a medium??size gasfield.(5) The results of numerical modeling for violationof the conditions of gas hydrate stability in Lake Baikalsediments can be valid for the other areas of hydrate??bearing sediments, with allowance for the case??spe??cific conditions and the scale of the tectonic impact.(6) In the conditions of highly permeable hydrate??bearing sediments, the excess pressure of the free gas,released due to the phase transformation of methanehydrate to methane gas can be extremely negligible,and the modeling is reduced to only solving the cou??pled hydrodynamic and heat transfer problems.REFERENCESAllen, P.A. and Allen, J.R., Basin Analysis: Principles andApplications, Oxford: Blackwell, 2005.Athy, L.F., Density, porosity and compaction of sedi??mentary rocks, Am. Assoc. Pet. Geol. Bull., 1930, vol. 14,pp. 1–24.Barenblatt, G.I., Entov, V.M., and Ryzhik, V.M., Dvizheniezhidkostei i gazov v prirodnykh plastakh (Fluid and GasMotion in Natural Strata), Moscow: Nedra, 1984.Bear, J., Dynamics of Fluids in Porous Media, New York:Elsevier, 1972.Bonacia, C., Comini, G., Fasano, A., and Primicerio, M.,Numerical solution of phase??change problems, Int. J. HeatMass Transfer, 1973, vol. 16, pp. 1825–1832.Carman, P., Fluid flow through a granular bed, Trans. Inst.Chem. Eng., 1937, vol. 15, pp. 150–167.Chekalyuk, E.B., Termodinamika neftyanogo plasta (Ther??modynamics of Oil Formation), Moscow: Nedra, 1965.COMSOL Multiphysics 3.5. License no. 1034054, 2008.Dyadin, Yu.A., Supramolecular chemistry: clathrate com??pounds, Sorovskii Obrazovat. Zh., 1998, no. 2, pp. 79–88.Ginsburg, G.D. and Soloviev, V.A., Submarinnye gazovyegidraty (Submarine Gas Hydrates), St. Petersburg: VNII??Okeangeologiya, 1994.Golmshtok, A.Ya., On the problem of calculating thepaleothicknesses of the layers composing the sedimentarycover, Uch. Zap. S.??Peterb. Gos. Univ., Vopr. Geofiz., 2008a,no. 40, pp. 3–23.Golmshtok, A.Ya., On the role of faulting in the formationof submarine gas hydrate deposits, Uch. Zap. S.??Peterb. Gos.Univ., Vopr. Geofiz., 2008b, vol. 41, pp. 80–111.Golmshtok, A.Y., Duchkov, A.D., Hutchinson, D.R., andKhanukaev, S.B., Heat flow and gas hydrates of the BaikalRift Zone, Int. J. Earth Sci., 2000, vol. 89, pp. 193–211.Kozeny, J., Uber kapillare Leitung des Wassers im Boden,Wien: Sitzungsber Akad. Wiss., 1927, vol. 136, no. 2a,pp.271–306. No. 4 2014

542GOLMSHTOK

Nigmatulin, R.I., Shagapov, V.Sh., and Nasyrova, L.A.,The “Heat impact in the porous medium saturated bygas hydrate”, Dokl. Earth Sci., 1999, vol. 366, no. 3,pp.337–340.

Rice, J.R. and Cleary, M.P., Some basic stress??diffusionsolutions for fluid??saturated elastic porous media with com??pressible constituents, Rev. Geophys. Space Phys., 1976,vol.14, pp. 227–241.

Seminskii, K.Zh., Karabanov, E.B., and Kuzmin, M.I.,Tectonic fractures in Baikal bottom sediments (studies ofBDP??98 core), Rus. Geol. Geophys., 2001, vol. 42, nos. 1–2,pp. 308–318.

Sloan, E.D., Hydrate Prediction Program, Colorado: Colo??rado School of Mines, 1998.

Sloan, E.D., Jr. and Koh, C., Clathrate Hydrates of NaturalGases, 3rd ed., New York: CRC Press, 2007.

Soloviev, V.A. and Mazurenko, L.L., Gas hydrate accumu??lations in the discharge zones as the objects of study andexploration, Nauka Tekh. Gaz. Prom., 2004, nos. 1–2,pp.14–20.

Sultan, N., Foucher, J.P., Cochonat, P., Tonnerre, T.,Bourillet, J.F., Ondreas, H., Cauquil, E., and Grauls, D.,Dynamics of gas hydrate: case of the Congo continentalslope, Mar. Geol., 2004, vol. 206, pp. 1–18.

Turcotte, D. and Shubert, G., Geodynamics, New York:Wiley, 1982.Kuzmin, M.I., Kalmychkov, G.V., Geletii, V.F.,Gnilusha,V.A., Goreglyad, A.V., Khakhaev, B.N.,Pevzner,L.A., Kawai, T., Yoshida, N., Duchkov, A.D.,Ponomarchuk, V.A., Kontorovich, A.E., Bazhin, N.M.,Makhov, G.A., Dyadin, Yu.A., Kuznetsov, F.A.,Larionov,E.G., Manakov, A.Yu., Smolyakov, B.S.,Mandelbaum,M., and Zheleznyakov, N.K., The first findof gas??hydrates in the sedimentary rocks of Lake Baikal,Dokl. Earth Sci., 1998, vol. 362, no. 7, pp. 1029–1031.Kvenvolden, K.A., Gas hydrates—geological perspectivesand global change, Rev. Geophys., 1993, vol. 31, pp. 173–299.Landau, L.D. and Lifshits, E.M., Statisticheskaya fizika(Statistical Physics), Moscow: GITTL, 1940.Leibenzon, L.S., Dvizhenie prirodnykh zhidkostei i gazov vporistoi srede (Motion of Natural Fluids and Gases inPorous Medium), Moscow–Leningrad: OGIZ, 1947.Matveeva, T.V., Mazurenko, L.L., Soloviev, V.A.,Klerkx,J., Kaulio, V.V., and Prasolov, E.M., Gas hydrateaccumulation in the subsurface sediments of LakeBaikal (Eastern Siberia), Geo??Mar. Lett., 2003, vol. 23,nos. 3–4, pp.289–299.Mazurenko, L.L. and Soloviev, V.A., Worldwide distribu??tion of deep??water fluid venting and potential occurrencesof gas hydrate accumulations, Geo??Mar. Lett., 2003, vol. 23,nos. 3–4, pp. 162–176.Nigmatulin, R.I., Shagapov, V.Sh., and Syrtlanov, V.R.,Self??similar problem of decomposition of gas hydrates in aporous medium upon depression and heating, J. Appl.Mech. Tech. Phys., 1998, vol. 39, no. 3, pp. 421–427.Translated by N. Kravets

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