Gas bubble dynamics during methane hydrate formation and its in fl uence on geophysical properties of sediment using high-resolution synchrotron imaging and rock physics modeling

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SUMMARY

    Background sediments with no hydrates (e_g, Weitemeyer et_al, 2006; Lee and Collett, 2008; Schwalenberg et_al, 2010; Hsu et_al, 2014). An increase in gas content reduces sound speed, whereas an increase in hydrate content increases sound speed (Sills et_al, 1991; Guerin et_al, 1999; Fohrmann and Pecher, 2012). Two types of co-existing gas with hydrate and water in pore space have been identified by many research works (Suess et_al, 2001; Milkov et_al, 2004; Schicks et_al, 2006; Chaouachi et_al, 2015; Yang et_al, 2016; Sahoo et_al, 2018b), which are 1) connected (pore network) and 2) disconnected (individual . . .

     

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