Microbial degradation of sedimentary organic matter associated with shale gas and coalbed methane in eastern Illinois Basin (Indiana), USA

Acetate, DIC and δ13CDIC evidence for acetoclastic methanogenesis in Songliao Basin, NE China

“…Patchy microbial activity associated with the fracture zone may be still going on, however, overall biogenic gas generation potential is low. Similar conclusion for overall low microbial activity in shale system has been draw by other studies (Gao et al, 2013;Schlegel et al, 2013).…”

Conceptual exploration targeting for microbially enhanced coal bed methane (MECoM) in the Walloon Subgroup, eastern Surat Basin, Australia

“…Water washing is also important from the perspective that it can displace organic intermediate accumulations that serve as precursors for methanogenic substrates such as acetate and H 2 (e.g. Furmann et al, 2013a;Gao et al, 2013;Orem et al, 2010). In the preliminary Walloon trial (Papendick et al, 2011), Taroom coal inoculated with Roma region formation water generated methane at rates of up to 0.9m 3 /t/day with overall yields of 3.64 to 6.17 m 3 /t.…”

Biogenic methane and carbon dioxide generation in organic-rich shales from southeastern Brazil

“…Bioavailable organic matter is an important limiting factor for CH 4 production in coal and shale systems (Jones et al, 2008;Gao et al, 2013;Krüger et al, 2014). The sensitivity of CH 4 production to bioavailable substrate depletion was detected by headspace refilling and acetic acid addition tests performed in this study.…”