Biogenic origin of coalbed gas in the northern Gulf of Mexico Coastal Plain, U.S.A.

Warwick, Peter D.; Breland, F. Clayton; Hackley, Paul C.

doi:10.1016/j.coal.2008.05.009

Cited by 75 publications

(50 citation statements)

References 30 publications

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“…In addition, the Louisiana Wilcox Group crude oils are distinguished from other Wilcox Group crude oils by the dominance of the C 28 -bisnorhopane biomarker relative to the oleanane biomarker (Sassen et al, 1988). More recent work by Warwick et al (2008) found similar geochemical characteristics in Louisiana Wilcox Group oils, confirming that other shallow Wilcox Group oils shared the same source as those studied previously by Sassen et al (1988). Hanor and Sassen (1990), Sassen (1990), and Warwick et al (2008) …”

Section: Organic Substrates In the Wilcox Groupsupporting

confidence: 84%

“…More recent work by Warwick et al (2008) found similar geochemical characteristics in Louisiana Wilcox Group oils, confirming that other shallow Wilcox Group oils shared the same source as those studied previously by Sassen et al (1988). Hanor and Sassen (1990), Sassen (1990), and Warwick et al (2008) …”

Section: Organic Substrates In the Wilcox Groupsupporting

confidence: 84%

“…Adsorption isotherms from coal bed cores across Ouachita, Caldwell, and Winn Parishes of Louisiana indicate that the CH 4 saturation states varied tremendously (Hackley et al, 2007). Isotopic data collected from gases of both coal and sandstone reservoirs indicate that CH 4 produced from the Louisiana Wilcox Group coal-bearing interval is mostly microbial in origin, formed predominately by CO 2 reduction, from biodegradation of in-situ coals and/or oil with some mixing of migrated thermogenic gas (Warwick et al, , 2008McIntosh et al, 2010).…”

Section: Organic Substrates In the Wilcox Groupmentioning

confidence: 97%

See 2 more Smart Citations

Fate of injected CO 2 in the Wilcox Group, Louisiana, Gulf Coast Basin: Chemical and isotopic tracers of microbial–brine–rock–CO 2 interactions

Shelton

McIntosh

Warwick

et al. 2014

Applied Geochemistry

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Section: Organic Substrates In the Wilcox Groupsupporting

confidence: 84%

Section: Organic Substrates In the Wilcox Groupsupporting

confidence: 84%

Section: Organic Substrates In the Wilcox Groupmentioning

confidence: 97%

See 1 more Smart Citation

Fate of injected CO 2 in the Wilcox Group, Louisiana, Gulf Coast Basin: Chemical and isotopic tracers of microbial–brine–rock–CO 2 interactions

Shelton

McIntosh

Warwick

et al. 2014

Applied Geochemistry

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“…A predominance of acetoclastic Methanosarcinales was already shown in two other coal seams investigated recently (9, 34) and in comparable habitats, i.e., hydrocarbon-contaminated aquifers (5). However, in coal mine water and drainage liquids, hydrogenotrophic methanogens were prevalent (7,29,35). Hydrogenotrophic methanogenesis dominated in the drainage water of coal reservoirs.…”

Section: Discussionmentioning

confidence: 99%

Acetogens and Acetoclastic Methanosarcinales Govern Methane Formation in Abandoned Coal Mines

Beckmann

Lueders

Krüger

et al. 2011

Appl Environ Microbiol

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In abandoned coal mines, methanogenic archaea are responsible for the production of substantial amounts of methane. The present study aimed to directly unravel the active methanogens mediating methane release as well as active bacteria potentially involved in the trophic network. Therefore, the stable-isotope-labeled precursors of methane, [ 13 C]acetate and H 2 -13 CO 2 , were fed to liquid cultures from hard coal and mine timber from a coal mine in Germany. Guided by methane production rates, samples for DNA stable-isotope probing (SIP) with subsequent quantitative PCR and denaturing gradient gel electrophoretic (DGGE) analyses were taken over 6 months. Surprisingly, the formation of [ 13 C]methane was linked to acetoclastic methanogenesis in both the [ 13 C]acetate-and the H 2 -13 CO 2 -amended cultures of coal and timber. H 2 -13 CO 2 was used mainly by acetogens related to Pelobacter acetylenicus and Clostridium species. Active methanogens, closely affiliated with Methanosarcina barkeri, utilized the readily available acetate rather than the thermodynamically more favorable hydrogen. Thus, the methanogenic microbial community appears to be highly adapted to the low-H 2 conditions found in coal mines.

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“…Geological and geochemical studies evidenced the wide distribution of secondary microbial gas in subsurface accumulations from on-and offshore sedimentary basins around the world, including oil reservoirs, coal deposits and shales [Etiope et al, 2009;Jiménez et al, 2012;Jones et al, 2008;Krüger et al, 2008;Martini et al, 2003;Milkov, 2011;Shimizu et al, 2007;Warwick et al, 2008;Zhou et al, 2005]. Production of biogenic methane has been detected in shallow systems such as New Albany and the Upper Devonian Antrim Shales in the Michigan Basin [Shurr and Ridgley, 2002].…”

Section: Evidence Of Microbial Conversion Of Hydrocarbons To Methane mentioning

confidence: 99%

Methanogenic Hydrocarbon Degradation: Evidence from Field and Laboratory Studies

et al. 2016

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Microbial transformation of hydrocarbons to methane is an environmentally relevant process taking place in a wide variety of electron acceptor-depleted habitats, from oil reservoirs and coal deposits to contaminated groundwater and deep sediments. Methanogenic hydrocarbon degradation is considered to be a major process in reservoir degradation and one of the main processes responsible for the formation of heavy oil deposits and oil sands. In the absence of external electron acceptors such as oxygen, nitrate, sulfate or Fe(III), fermentation and methanogenesis become the dominant microbial metabolisms. The major end product under these conditions is methane, and the only electron acceptor necessary to sustain the intermediate steps in this process is CO₂, which is itself a net product of the overall reaction. We are summarizing the state of the art and recent advances in methanogenic hydrocarbon degradation research. Both the key microbial groups involved as well as metabolic pathways are described, and we discuss the novel insights into methanogenic hydrocarbon-degrading populations studied in laboratory as well as environmental systems enabled by novel cultivation-based and molecular approaches. Their possible implications on energy resources, bioremediation of contaminated sites, deep-biosphere research, and consequences for atmospheric composition and ultimately climate change are also addressed.

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Biogenic origin of coalbed gas in the northern Gulf of Mexico Coastal Plain, U.S.A.

Cited by 75 publications

References 30 publications

Fate of injected CO 2 in the Wilcox Group, Louisiana, Gulf Coast Basin: Chemical and isotopic tracers of microbial–brine–rock–CO 2 interactions

Fate of injected CO 2 in the Wilcox Group, Louisiana, Gulf Coast Basin: Chemical and isotopic tracers of microbial–brine–rock–CO 2 interactions

Acetogens and Acetoclastic Methanosarcinales Govern Methane Formation in Abandoned Coal Mines

Methanogenic Hydrocarbon Degradation: Evidence from Field and Laboratory Studies

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