Molecular sequences derived from Paleocene Fort Union Formation coals vs. associated produced waters: Implications for CBM regeneration

Klein, Donald A.; Flores, Romeo M.; Venot, Christophe; Gabbert, Kendra; Schmidt, Raleigh; Stricker, Gary D.; Pruden, Amy; Mandernack, Kevin W.

doi:10.1016/j.coal.2008.05.023

Cited by 69 publications

(31 citation statements)

References 54 publications

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“…Both bacterial diversity and communities within both coal and rock were similar as revealed by the Chao1 estimators and the contribution of OTUs and genera. These were consistent with the previous study of Klein et al (2008) and Li et al (2008) who reported the distinct composition of microbial communities in coal and produced water from CBM reservoirs. The higher microbial diversity in coal and rock compared to produced water might be due to the existence of more ecological niches in coal and rock than in water.…”

Section: Discussionsupporting

confidence: 82%

“…The higher microbial diversity in coal and rock compared to produced water might be due to the existence of more ecological niches in coal and rock than in water. As methanogens were detected in all samples, methanogenesis may occur in water and may also occur on the surface or in a cleft of a coal structure (Klein et al, 2008). Thus, where methanogenesis tends to occur in situ is vital to be particularly understood before determining ways of regenerating biogenic CBM in the Ordos Basin.…”

Section: Discussionmentioning

confidence: 99%

“…However, most such studies used conventional molecular methods and sampled produced water drilled from CBM wells. Little was known about microbial communities inhabiting coal and rock (Klein et al, 2008;Li et al, 2008;Penner et al, 2010). In this study, produced water, coal and rock samples (SXLL-W, SXLL-C and SXLL-R, respectively) were obtained and analyzed using 454 pyrosequencing, in order to obtain more complete information about the microbial communities associated with the CBM reservoir in the Ordos Basin (Fig.…”

Section: Discussionmentioning

confidence: 99%

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Pyrosequencing reveals the dominance of methylotrophic methanogenesis in a coal bed methane reservoir associated with Eastern Ordos Basin in China

Guo

Liu

et al. 2012

International Journal of Coal Geology

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a b s t r a c t a r t i c l e i n f oIt is generally believed that biogenic coal bed methane (CBM) is an end product of coal biodegradation by methanogenic archaea and syntrophic bacteria. In this work, the archaeal and bacterial communities of CBM reservoir associated with Ordos Basin in China were investigated using 454 pyrosequencing. Sampling produced water, coal and rock in the reservoir, a total of 46,598 sequence reads were obtained. All archaea were methanogens with the genus Methanolobus predominating. The genus consisted of 81.18% of pyrosequencing reads in water sample and > 99% in coal and rock samples. Although the phylum Proteobacteria was the main component of all samples, bacterial communities in coal and rock samples were similar at the genus level, which were distinctly separated with water sample. The results strongly suggested that methylotrophic methanogenesis governed the biogenic CBM formation. The separation of microbial communities between water and coal, rock samples should be considered when investigating the process of coal biodegradation and the generation of new biogenic CBM.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Pyrosequencing reveals the dominance of methylotrophic methanogenesis in a coal bed methane reservoir associated with Eastern Ordos Basin in China

Guo

Liu

et al. 2012

International Journal of Coal Geology

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“…Reaction rate is another major factor affecting the economic viability of MECoM (Klein et al, 2008;Scott, 1999). Cui et al (2004) estimated that water-flushing can potentially redistribute methane and carbon dioxide over relatively short geological time periods.…”

Section: Reaction Rates and Water Flushingmentioning

confidence: 99%

“…Green et al, 2008;Harris et al, 2008;Jones et al, 2010;Klein et al, 2008;Papendick et al, 2011;Penner et al, 2010;Singh et al, 2012), reflecting the potential for sustainable regeneration of methane from engineered coal bioreactors. However, linking these bodies of research to MECoM exploration is still in its infancy, and there is no generally accepted exploration model.…”

Section: Potential Targeting Criteria For An In Situ Subsurface Coal mentioning

confidence: 99%

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

Hamilton

Golding

Baublys

et al. 2015

International Journal of Coal Geology

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Starting Up Microbial Enhanced Oil Recovery

Siegert

Sitte

Galushko

et al. 2013

Geobiotechnology II

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This chapter gives the reader a practical introduction into microbial enhanced oil recovery (MEOR) including the microbial production of natural gas from oil. Decision makers who consider the use of one of these technologies are provided with the required scientific background as well as with practical advice for upgrading an existing laboratory in order to conduct microbiological experiments. We believe that the conversion of residual oil into natural gas (methane) and the in situ production of biosurfactants are the most promising approaches for MEOR and therefore focus on these topics. Moreover, we give an introduction to the microbiology of oilfields and demonstrate that in situ microorganisms as well as injected cultures can help displace unrecoverable oil in place (OIP). After an initial research phase, the enhanced oil recovery (EOR) manager must decide whether MEOR would be economical. MEOR generally improves oil production but the increment may not justify the investment. Therefore, we provide a brief economical assessment at the end of this chapter. We describe the necessary state-of-the-art scientific equipment to guide EOR managers towards an appropriate MEOR strategy. Because it is inevitable to characterize the microbial community of an oilfield that should be treated using MEOR techniques, we describe three complementary start-up approaches. These are: (i) culturing methods, (ii) the characterization of microbial communities and possible bio-geochemical pathways by using molecular biology methods, and (iii) interfacial tension measurements. In conclusion, we hope that this chapter will facilitate a decision on whether to launch MEOR activities. We also provide an update on relevant literature for experienced MEOR researchers and oilfield operators. Microbiologists will learn about basic principles of interface physics needed to study the impact of microorganisms living on oil droplets. Last but not least, students and technicians trying to understand processes in oilfields and the techniques to examine them will, we hope, find a valuable source of information in this review.

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Molecular sequences derived from Paleocene Fort Union Formation coals vs. associated produced waters: Implications for CBM regeneration

Cited by 69 publications

References 54 publications

Pyrosequencing reveals the dominance of methylotrophic methanogenesis in a coal bed methane reservoir associated with Eastern Ordos Basin in China

Pyrosequencing reveals the dominance of methylotrophic methanogenesis in a coal bed methane reservoir associated with Eastern Ordos Basin in China

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

Starting Up Microbial Enhanced Oil Recovery

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