Preferential mode of gas invasion in sediments: Grain-scale mechanistic model of coupled multiphase fluid flow and sediment mechanics

Journal of Geophysical Research: Solid Earth

Volumn 114, Issue 8, 2009, Pages

  Jain, A K ^a   Juanes, R ^a  

^a Massachusetts Institute of Technology Cambridge   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BRINE; CAPILLARY PRESSURE; CARBON DIOXIDE; CARBON SEQUESTRATION; COMPUTER SIMULATION; DEFORMATION MECHANISM; DISCRETE ELEMENT METHOD; EXPERIMENTAL STUDY; FINE GRAINED SEDIMENT; FLUID PRESSURE; FRACTURE NETWORK; FRACTURE PROPAGATION; GAS FLOW; GAS HYDRATE; GRAIN SIZE; LABORATORY METHOD; METHANE; MULTIPHASE FLOW; NUMERICAL MODEL; OBSERVATIONAL METHOD; PERMAFROST; POCKMARK; PORE PRESSURE; PORE SPACE; SEAFLOOR; SEDIMENT ANALYSIS; VENTING;

EID: 72749097225     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/2008JB006002     Document Type: Article

References (98)

1. Anderson, A. L., and L. D. Hampton (1980), Acoustics of gas-bearing sediments. 1. Background, J. Acoust. Soc. Am., 67 (6), 1865-1889, doi:10.1121/1.384453.
2. Anderson, A. L., F. Abegg, J. A. Hawkins, M. E. Duncan, and A. P. Lyons (1998), Bubble populations and acoustic interaction with the gassy floor of Eckernförde Bay, Cont. Shelf Res., 18, 1807-1838, doi:10.1016/S0278-1343 (98) 00059-4.
3. Anderson, T. L. (1991), Fracture Mechanics: Fundamentals and Applications, CRC Press, Boca Raton, Fla.
4. Archer, D., B. Buffett, and V. Brovkin (2009), Ocean methane hydrates as a slow tipping point in the global carbon cycle, Proc. Natl. Acad. Sci. U. S. A., doi:10.1073/pnas.0800885105, in press.
5. Behseresht, J., Y. Peng, M. Prodanovic, S. L. Bryant, A. K. Jain, and R. Juanes (2008), Mechanisms by which methane gas and methane hydrate coexist in ocean sediments, paper OTC 19332 presented at Offshore Technology Conference, Offshore Technol. Conf., Houston, Tex.
6. Best, A. I., M. D. Richardson, B. P. Boudreau, A. G. Judd, I. Leifer, A. P. Lyons, C. S. Martens, D. L. Orange, and S. J. Wheeler (2006), Shallow seabed methane gas could pose coastal hazard, Eos Trans. AGU, 57 (22), 213, 217.
7. Biot, M. A. (1941), General theory of three-dimensional consolidation, J. Appl. Phys., 12, 155-164, doi:l0.1063/1.1712886.
8. Bird, R. B., W. E. Stewart, and E. N. Lightfoot (1960), Transport Phenomena, John Wiley, New York.
9. Boudreau, B. P., C. Algar, B. D. Johnson, I. Croudace, A. Reed, Y. Furukawa, K. M. Dorgan, P. A. Jumars, and A. S. Grader (2005), Bubble growth and rise in soft sediments, Geology, 33 (6), 517-520, doi:10.1130/G21259.1. (Pubitemid 40829848)
10. Bruno, M. S. (1994), Micromechanics of stress-induced permeability anisotropy and damage in sedimentary rocks, Mech. Mater., 18, 31-48, doi:10.1016/0167-6636 (94) 90004-3.
11. Bruno, M. S., and R. B. Nelson (1991), Microstructural analysis of the inelastic behavior of sedimentary rock, Mech. Mater., 12 (2), 95-118, doi:10.1016/0167-6636 (91) 90057-7.
12. Buffett, B., and D. Archer (2004), Global inventory of methane clathrate: sensitivity to changes in the deep ocean, Earth Planet. Sci. Lett., 227, 185-199, doi:10.1016/j.epsl.2004.09.005. (Pubitemid 39428177)
13. Cho, G. C., and J. C. Santamarina (2001), Unsaturated particulate materials-Particle-level studies, J. Geotech. Geoenviron. Eng., 127(1), 84-96.
14. Collett, T., et al. (Eds.) (2008), Indian National Gas Hydrate Program Expedition 01 Initial Reports, Indian Dir. General of Hydrocarbons, New Delhi, India.
15. Cook, B. K., D. R. Noble, and J. R. Williams (2004), A direct simulation method for particle-fluid systems, Eng. Comput., 21 (2-4), 151-168.
16. Coussy, O. (1995), Mechanics of Porous Media, John Wiley, Chichester, U. K.
17. Crank, J. (1975), Mathematics of Diffusion, 2nd ed., Oxford Univ. Press, New York.
18. Cundall, P. A., and O. D. L. Strack (1979), Discrete numerical model for granular assemblies, Geotechnique, 29, 47-65.
19. Dickens, G. R. (2003), Rethinking the global carbon cycle with a large, dynamic and microbially mediated gas hydrate capacitor, Earth Planet. Sci. Lett., 213, 169-183, doi:10.1016/S0012-821X (03) 00325-X.
20. Dickens, G. R., J. R. O'Neil, D. K. Rea, and R. M. Owen (1995), Dissociation of oceanic methane hydrate as a cause of the carbon isotope excursion at the end of the Paleocene, Paleoceanography, 10(6), 965-971, doi:10.1029/95PA02087. (Pubitemid 26462021)
21. Dickens, G. R., C. K. Paull, and P. Wallace (1997), Direct measurement of in situ methane quantities in a large gas-hydrate reservoir, Nature, 385, 426-428, doi:10.1038/385426a0. (Pubitemid 27065925)
22. Flemings, P. B., X. Liu, and W. J. Winters (2003), Critical pressure and multiphase flow in Blake Ridge gas hydrates, Geology, 31(12), 1057-1060, doi:10.1130/G19863.1. (Pubitemid 38119278)
23. Ginsburg, G. D., and V. A. Soloviev (1997), Methane migration within the submarine gas-hydrate stability zone under deep-water conditions, Mar. Geol., 137, 49-57, doi:10.1016/S0025-3227 (96) 00078-3.
24. Goldberg, D., T. Takahashi, and A. L. Slagle (2008), Carbon dioxide sequestration in deep-sea basalt, Proc. Natl. Acad. Sci. U. S. A., 105, 9920-9925, doi: 10.1073/pnas.0804397105.
25. Gorman, A. R., W. S. Holbrook, M. J. Hornbach, K. L. Hackwith, D. Lizarralde, and I. Pecher (2002), Migration of methane gas through the hydrate stability zone in a low-flux hydrate province, Geology, 30(4), 327-330, doi:10.1130/0091-7613 (2002) 030<0327:MOMGTT>2.0. CO;2. (Pubitemid 35003285)
26. Heeschen, K. U., A. M. Trehu, R. W. Collier, E. Suess, and G. Rehder (2003), Distribution and height of methane bubble plumes on the Cascadia Margin characterized by acoustic imaging, Geophys. Res. Lett., 30(12), 1643, doi:10.1029/2003GL016974.
27. Heeschen, K. U., R. W. Collier, M. A. de Angelis, E. Suess, G. Rehder, P. Linke, and G. P. Klinkhammer (2005), Methane sources, distributions, and fluxes from cold vent sites at Hydrate Ridge, Cascadia Margin, Global Biogeochem. Cycles, 19, GB2016, doi:10.1029/2004GB002266. (Pubitemid 41576415)
28. Heeschen, K. U., H. J. Hohnberg, M. Haeckel, F. Abegg, M. Drews, and G. Bohrmann (2007), In situ hydrocarbon concentrations from pressurized cores in surface sediments, northern Gulf of Mexico, Mar. Chem., 107, 498-515, doi: 10.1016/j.marchem.2007.08.008. (Pubitemid 350184204)
29. Holbrook, W. S., H. Hoskins, W. T. Wood, R. A. Stephen, and D. Lizarralde (1996), Methane hydrate and free gas on the Blake Ridge from vertical seismic profiling, Science, 273, 1840-1842, doi: 10.1126/science.273.5283.1840.
30. Hornbach, M. J., D. M. Saffer, and W. S. Holbrook (2004), Critically pressured free-gas reservoirs below gas-hydrate provinces, Nature, 427(6970), 142-144, doi:10.1038/nature02172. (Pubitemid 38094952)
31. Hornbach, M. J., C. Ruppel, and C. L. V. Dover (2007), Three-dimensional structure of fluid conduits sustaining an active deep marine cold seep, Geophys. Res. Lett., 34, L05601, doi:10.1029/2006GL028859. (Pubitemid 46864513)
32. House, K. Z., D. P. Schrag, C. F. Harvey, and K. S. Lackner (2006), Permanent carbon dioxide storage in deep-sea sediments, Proc. Natl. Acad. Sci. U. S. A., 103, 12, 291-12, 295, doi:10.1073/pnas.0605318103. (Pubitemid 44267252)
33. Hovland, M., J. V. Gardner, and A. G. Judd (2002), The significance of pockmarks to understanding fluid flow processes and geohazards, Geofluids, 2, 127-136, doi:10.1046/j.l468-8123.2002.00028.x.
34. Itasca Consulting Group, Inc. (Itasca) (2004), PFC2D, version 3.1, Theory and Background, Minneapolis, Minn.
35. Jain, A. K., and R. Juanes (2008), Pore-scale mechanistic study of the preferential mode of hydrate formation in sediments: Coupling of multiphase fluid flow and ediment mechanics, paper presented at 6th International Conference on Gas Hydrates, Vancouver, B. C., Canada.
36. Judd, A. G., M. Hovland, L. I. Dimitrov, S. Garcia Gil, and V. Jukes (2002), The geological methane budget at Continental Margins and its influence on climate change, Geofluids, 2, 109-126, doi:10.1046/j.l468-8123.2002.00027.x.
37. vKato, S., T. Sakakibara, and H. Yoshimori (2004), Effects of intergranular adhesive force on behavior of granular material, in Numerical Modeling in Micromechanics Via Particle Methods: Proceedings of the 2nd International PFC Symposium, Kyoto, Japan, edited by Y. Shimizu, R. D. Hart, and P. Cundall, pp. 347-354, A. A. Balkema, Leiden, Netherlands.
38. Koide, H., M. Takahashi, and H. Tsukamoto (1995), Self-trapping mechanisms of carbon dioxide in the aquifer disposal, Energy Convers. Manage., 36, 505-508, doi:10.1016/0196-8904 (95) 00054-H.
39. 2-The most protective storage, Energy Convers. Manage., 38, S253-S258, doi: 10.1016/S0196-8904 (96) 00278-6.
40. 2, Energy, 22, 279-283, doi:10.1016/S0360-5442 (96) 00122-3.
41. Kvenvolden, K. A. (1988), Methane hydrate-A major reservoir of carbon in the shallow geosphere?, Chem. Geol., 71, 41-51, doi:10.1016/0009-2541 (88) 90104-0.
42. Lenormand, R., C. Zarcone, and A. Sarr (1983), Mechanisms of the displacement of one fluid by another in a network of capillary ducts, J. Fluid Mech., 135, 337-353, doi:10.1017/S0022112083003110.
43. Lenormand, R., E. Touboul, and C. Zarcone (1988), Numerical models and experiments on immiscible displacements in porous media, J. Fluid Mech., 189, 165-187, doi: 10.1017/S0022112088000953.
44. Leverett, M. C. (1941), Capillary behavior of porous solids, Petrol. Trans. AIME, 142, 152-169.
45. Levine, J. S., J. M. Matter, D. Goldberg, A. Cook, and K. S. Lackner (2007), Gravitational trapping of carbon dioxide in deep sea sediments: Permeability, buoyancy, and geomechanical analysis, Geophys. Res. Lett., 34, L24703, doi: 10.1029/2007GL031560. (Pubitemid 351279321)
46. Li, L., and R. M. Holt (2001), Simulation of flow in sandstone with fluid coupled particle model, in Rock Mechanics in the National Interest. Proceedings of the 38th U. S. Rock Mechanics Symposium, Washington, D. C., vol. 1, pp. 165-172, A. A. Balkema, Rotterdam, Netherlands.
47. Li, L., and R. M. Holt (2004), A study on the calculation of particle volumetric deformation in a fluid coupled PFC model, in Numerical Modeling in Micromechanics Via Particle Methods. Proc. of the 2nd International PFC Symposium, Kyoto, Japan, edited by Y. Shimizu, R. D. Hart, and P. Cundall, pp. 273-279, A. A. Balkema, Leiden, Netherlands.
48. Lian, G., C. Thornton, and M. J. Adarris (1993), A theoretical study of the liquid bridge forces between two rigid spherical bodies, J. Colloid Interface Sci., 161, 138-147, doi:10.1006/jcis.1993.1452.
49. Liu, X., and P. B. Flemings (2006), Passing gas through the hydrate stability zone at southern Hydrate Ridge, offshore Oregon, Earth Planet. Sci. Lett., 241, 211-216, doi:10.1016/j.epsl.2005.10.026. (Pubitemid 43013875)
50. Liu, X., and P. B. Flemings (2007), Dynamic multiphase flow model of hydrate formation in marine sediments, J. Geophys. Res., 112, B03101, doi: 10.1029/2005JB004227. (Pubitemid 47386325)
51. Mason, G., and N. R. Morrow (1991), Capillary behavior of a perfectly wetting liquid in irregular triangular tubes, J. Colloid Interface Sci., 141, 262-274, doi: 10.1016/0021-9797 (91) 90321-X.
52. Mayer, R. P., and R. A. Stowe (1965), Mercury-porosimetry breakthrough pressure for penetration between packed spheres, J. Colloid Interface Sci., 20, 893.
53. Milkov, A. V., and W. Xu (2005), Comment on "Gas hydrate growth, methane transport, and chloride enrichment at the southern summit of Hydrate Ridge, Cascadia margin off Oregon" Earth Planet. Sci. Lett., 239, 162-167, doi: 10.1016/j.epsl.2005.05.044. (Pubitemid 41614305)
54. by Torres et al. [Earth Planet. Sci. Lett. 226: 225-241 (2004)]
55. Milkov, A. V., et al. (2004), Co-existence of gas hydrate, free gas, and brine within the regional gas hydrate stability zone at Hydrate Ridge (Oregon margin) : Evidence from prolongued degassing of a pressurized core, Earth Planet. Sci. Lett., 222, 829-843, doi:10.1016/j.epsl.2004.03.028. (Pubitemid 38783393)
56. Netzeband, G. L., C. P. Hübscher, D. Gajewski, J. W. G. Grobys, and J. Bialas (2005), Seismic velocities from the Yaquina forearc basin off Peru: Evidence for free gas within the gas hydrate stability zone, Int. J. Earth Sci., 94, 420-432, doi:10.1007/s00531-005-0483-2. (Pubitemid 40974180)
57. Nimblett, J., and C. Ruppel (2003), Permeability evolution during the formation of gas hydrates in marine sediments, J. Geophys. Res., 108 (B9), 2420, doi: 10.1029/2001JB001650.
58. Nunn, J. A., and P. Meulbroek (2002), Kilometer-scale upward migration of hydrocarbons in geopressured sediments by buoyancy-driven propagation of methane-filled fractures, AAPG Bull., 86(5), 907-918.
59. Obzhirov, A., R. Shakirov, A. Salyuk, E. Suess, N. Biebow, and A. Salomatin (2004), Relations between methane venting, geological structure and seismo-tectonics in the Okhotsk Sea, Geo Mar. Lett., 24, 135-139, doi:10.1007/s00367-004-0175-0. (Pubitemid 39000889)
60. Øren, P. E., S. Bakke, and O. J. Arntzen (1998), Extending predictive capabilities to network models, Soc. Pet. Eng. J., 3(4), 324-336.
61. Orr, F. M., L. E. Scriven, and A. P. Rivas (1975), Pendular rings between solids: Meniscus properties and capillary force, J. Fluid Mech., 67, 723-742, doi: 10.1017/S0022112075000572.
62. Patzek, T. W. (2001), Verification of a complete pore network simulator of drainage and imbibition, Soc. Pet. Eng. J., 6(2), 144-156.
63. Patzek, T. W., and D. B. Silin (2001), Shape factor and hydraulic conductance in noncircular capillaries: I. One-phase creeping flow, J. Colloid Interface Sci., 236, 295-304, doi:10.1006/jcis.2000.7413. (Pubitemid 32547665)
64. Paull, C. K., P. G. Brewer, W. Ussier, E. T. Peltzer, G. Rehder, and D. Clague (2003), An experiment demonstrating that marine slumping is a mechanism to transfer methane from seafloor gas-hydrate deposits into the upper ocean and atmosphere, Geo Mar. Lett., 22, 198-203.
65. Potyondy, D. O., and P. A. Cundall (2004), A bonded-particle model for rock, Int. J. Rock Mech. Min. Sci., 41, 1329-1364, doi:10.1016/j.ijrmms.2004.09. 011. (Pubitemid 39615643)
66. vPrincen, H. M. (1969a), Capillary phenomena in assemblies of parallel cylinders. I. Capillary rise between two cylinders, J. Colloid Interface Sci., 30, 69-75, doi:10.1016/0021-9797 (69) 90379-8.
67. Princen, H. M. (1969b), Capillary phenomena in assemblies of parallel cylinders. II. Capillary rise in systems with more than two cylinders, J. Colloid Interface Sci., 30, 359-371, doi: 10.1016/0021-9797 (69) 90403-2.
68. Princen, H. M. (1970), Capillary phenomena in assemblies of parallel cylinders. III. Liquid columns between horizontal parallel cylinders, J. Colloid Interface Sci., 34, 171-184, doi: 10.1016/0021-9797 (70) 90167-0.
69. Prodanovic, M, and S. Bryant (2006), A level set method for determining critical curvatures for drainage and imbibition, J. Colloid Interface Sci., 304, 442-458.
70. Richards, L. A. (1931), Capillary conduction of liquids through porous mediums, Physics, 1, 318-333, doi:10.1063/1.1745010.
71. Riedel, M, T. S. Collett, M. J. Malone, and the Expedition 311 Scientists (Eds.) (2006), Cascadia Margin Gas Hydrates, Proc. IODP, Expedition Reports, vol. 311, Integrated Ocean Drilling Program, College Station, Tex.
72. Ruppel, C., G. R. Dickens, D. G. Castellini, W. Gilhooly, and D. Lizarralde (2005), Heat and salt inhibition of gas hydrate formation in the northern Gulf of Mexico, Geophys. Res. Lett., 32, L04605, doi:10.1029/ 2004GL021909. (Pubitemid 40746864)
73. Sahling, H., G. Bohrmann, V. Spiess, J. Bialas, M. Breitzke, M. Ivanov, S. Kasten, S. Krastel, and R. Schneider (2008), Pockmarks in the Northern Congo Fan area, SW Africa: Complex seafloor features shaped by fluid flow, Mar. Geol., 249, 206-225, doi:10.1016/j.margeo.2007.11.010.
74. Sassen, R., S. L. Losh, L. Cathles III, H. H. Roberts, J. K. Whelan, A. V. Milkov, S. T. Sweet, and D. A. DeFreitas (2001), Massive veinfilling gas hydrate: Relation to ongoing gas migration from the deep subsurface in the Gulf of Mexico, Mar. Pet. Geol., 18, 551-560, doi:10.1016/S0264-8172 (01) 00014-9.
75. Shimizu, Y. (2004), Fluid coupling in PFC2D and PFC3D, in Numerical Modeling in Micromechanics Via Particle Methods. Proc. of the 2nd International PFC Symposium, Kyoto, Japan, edited by Y. Shimizu, R. D. Hart, and P. Cundall, pp. 281-287, A. A. Balkema, Leiden, Netherlands.
76. Sloan, E. D. (1998), Clathrate Hydrates of Natural Gases, 2nd ed., Marcel Deker, New York.
77. Sloan, E. D. (2003), Fundamental principles and applications of natural gas hydrates, Nature, 426, 353-359, doi:10.1038/nature02135. (Pubitemid 37463158)
78. Soloviev, V. A., and G. D. Ginsburg (1997), Water segregation in the course of gas hydrate formation and accumulation in submarine gas-seepage fields, Mar. Geol., 137, 59-68, doi:10.1016/S0025-3227 (96) 00079-5.
79. Suess, E., et al. (1999), Gas hydrate destabilization: enhanced dewatering, benthic material turnover and large methane plumes at the Cascadia convergent margin, Earth Planet. Sci. Lett., 170, 1-15, doi: 10.1016/S0012-821X (99) 00092-8.
80. Tan, B. B. (2004), Geotechnical characterization of sediments from Hydrate Ridge, Cascadia continental margin, M. Sc. thesis, Mass. Inst. of Technol., Cambridge.
81. Tan, B. B., J. T. Germaine, and P. B. Flemings (2006), Data report: Consolidation and strength characteristics of sediments from ODP Site 1244, Hydrate Ridge, Cascadia continental margin, Proc. Ocean Drill. Program Sci., 204.
82. Terzaghi, K. (1943), Theoretical Soil Mechanics, John Wiley, New York.
83. Torres, M. E., J. McManus, D. E. Hammond, M. A. de Angelis, K. U. Heeschen, S. L. Colbert, M. D. Tryon, K. M. Brown, and E. Suess (2002), Fluid and chemical fluxes in and out of sediments hosting methane hydrate deposits on Hydrate Ridge, OR, I: Hydrological provinces, Earth Planet. Sci. Lett., 201, 525-540, doi:10.1016/j.epsl.2004.07.029.
84. Torres, M. E., K. Wallman, A. M. Trehu, G. Bohrmann, W. S. Borowski, and H. Tomaru (2004), Gas hydrate growth, methane transport, and chloride enrichment at the southern summit of Hydrate Ridge, Cascadia margin off Oregon, Earth Planet. Sci. Lett., 226, 225-241, doi:10.1016/j.epsl.2004.07.029. (Pubitemid 39234634)
85. Torres, M. E., K. Wallman, A. M. Trehu, G. Bohrmann, W. S. Borowski, and H. Tomaru (2005), Reply to comment on: "Gas hydrate growth, methane transport, and chloride enrichment at the southern summit of Hydrate Ridge, Cascadia margin off Oregon", Earth Planet. Sci. Lett., 239, 168-175, doi:10.1016/j.epsl.2005.08.012. (Pubitemid 41614306)
86. Trehu, A. M., et al. (2004a), Feeding methane vents and gas hydrate deposits at south Hydrate Ridge, Geophys. Res. Lett., 31, L23310, doi:10.1029/.2004GL021286.
87. Trehu, A. M., et al. (2004b), Three-dimensional distribution of gas hydrate beneath southern Hydrate Ridge: constraints from ODP Leg 204, Earth Planet. Sci. Lett., 222, 845-862, doi: 10.11 30/0091-7613 (1999) 027<1075:MOTADF>2.3. CO;2.
88. Trehu, A. M., , G. Bohrmann, M. E. Torres, and F. S. Colwell (Eds.) (2006a), Drilling gas Hhydrates on Hydrate Ridge, Cascadia Continental Margin, Proc. Ocean Drill. Program Sci. Results, 204, doi:10.2973/odp. proc.sr.204.2006.
89. Trehu, A. M., C. Ruppel, M. Holland, G. R. Dickens, M. E. Torres, T. S. Collett, D. Goldberg, R. Riedel, and P. Schultheiss (2006b), Gas hydrates in marine sediments: Lessons from scientific drilling, Oceanography, 19(4), 124-143.
90. Tryon, M. D., K. M. Brown, M. E. Torres, A. M. Trehu, J. McManus, and R. W. Collier (1999), Measurements of transience and downward fluid flow near episodic methane gas vents, Hydrate Ridge, Cascadia, Geology, 27(12), 1075-1078, doi:10.1130/0091-7613 (1999) 027<1075: MOTADF>2.3. CO;2.
91. Tryon, M. D., K. M. Brown, and M. E. Torres (2002), Fluid and chemical flux in and out of sediments hosting methane hydrate deposits on Hydrate Ridge, OR, II: Hydrological processes, Earth Planet. Sci. Lett., 201, 541-557, doi:10.1016/S0012-821X (02) 00732-X.
92. Waite, W. F., T. J. Kneafsey, W. J. Winters, and D. H. Mason (2008), Physical property changes in hydrate-bearing sediment due to depressurization and subsequent repressurization, J. Geophys. Res., 113, B07102, doi:10.1029/2007JB005351.
93. Wang, H. F. (2000), Theory of Linear Poroelasticity, Princeton Univ. Press, Princeton, N. J.
94. Weinberger, J. L., and K. M. Brown (2006), Fracture networks and hydrate distribution at Hydrate Ridge, Oregon, Earth Planet. Sci. Lett., 245, 123-136, doi:10.1016/j.epsl.2006.03.012.
95. Weinberger, J. L., K. M. Brown, and P. E. Long (2005), Painting a picture of gas hydrate distribution with thermal images, Geophys. Res. Lett., 32, L04609, doi:10.1029/2004GL021437. (Pubitemid 40746868)
96. Wilkinson, D., and J. Willemsen (1983), Invasion percolation: A new form of percolation theory, J. Phys. A, 16, 3365-3376, doi:10.1088/0305-4470/16/14/ 028.
97. Wood, W. T., J. F. Gettrust, N. R. Chapman, G. D. Spence, and R. D. Hyndman (2002), Decreased stability of methane hydrates in marine sediments owing to phase-boundary roughness, Nature, 420, 656-660, doi:10.1038/ nature01263. (Pubitemid 36764494)
98. Zuhlsdorff, L., and V. Spiess (2004), Three-dimensional seismic characterization of a venting site reveals compelling indications of natural hydraulic fracturing, Geology, 32(2), 101-104, doi:10.1130/G19993.1. (Pubitemid 38306245)