Coupled hydrology and biogeochemistry of Paleocene–Eocene coal beds, northern Gulf of Mexico

McIntosh, Jennifer C.; Warwick, Peter D.; Martini, Anna M.; Osborn, Stephen G.

doi:10.1130/b30039.1

Cited by 57 publications

(59 citation statements)

References 65 publications

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“…The Black Lake Field, which was the source for the CO 2 used during the Hunt Petroleum EOR, was also sampled (Table 1). Previous data collected from oil and gas producing wells in northcentral Louisiana were incorporated from McIntosh et al (2010).…”

Section: Methodsmentioning

confidence: 99%

“…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: 96%

“…Microbial oxidation of hydrocarbons (C 1 -C 3 ) and inputs of thermogenic gas could have also altered d 13 C-CH 4 values of gases across the regional transect. Previous research conducted on oiland coal-associated gases of the Paleocene-Eocene Wilcox Group in central Louisiana suggests that the gas is both biogenic and thermogenic in origin, with biogenic methane likely overprinting previously migrated thermogenic gas (Warwick, 2004;Breland and Warwick, 2005;Warwick et al, 2005Warwick et al, , 2006Warwick et al, , 2008McIntosh et al, 2010).…”

Section: Regional Differences In Environmental Conditions and Methanomentioning

confidence: 96%

“…Possible fates of the injected CO 2 for EOR in the Olla Field include CO 2 reduction via microbial methanogenesis (previously hypothesized by McIntosh et al, 2010), migration, sorption to coal surfaces, free CO 2 trapping (i.e. buoyant trapping), and dissolution in formation fluids.…”

Section: Fate Of Injected Comentioning

confidence: 99%

“…However, some depleted oil reservoirs, which are a target site for geologic CO 2 sequestration, contain microbial communities that could be impacted by changes in CO 2 concentrations. Some hypothesized effects of high CO 2 concentrations on microbes include enhanced methanogenesis via CO 2 injection (Faison and Crawford, 1993;Scott, 1999;Budwill et al, 2003;Stricker et al, 2008;McIntosh et al, 2010;Mayumi et al, 2013), increased energy available for microbial metabolism (Kirk, 2011), toxicity (as suggested in the food industry; e.g., Haas et al, 1989;Shimoda et al, 1998), or no major effects (Kirk, 2011;Papendick et al, 2011).…”

Section: Introductionmentioning

confidence: 97%

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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: Methodsmentioning

confidence: 99%

Section: Organic Substrates In the Wilcox Groupmentioning

confidence: 96%

Section: Regional Differences In Environmental Conditions and Methanomentioning

confidence: 96%

Section: Fate Of Injected Comentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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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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Microbial consortia controlling biogenic gas formation in the Qaidam Basin of western China

et al. 2016

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Knowledge of what controls the activity of subsurface microbial communities is critical for assessing and managing biogenic methane resources. In this study, 19 formation waters and five gas samples were collected at depths of 800 to 1900 m from Quaternary biogenic gas fields of the Qaidam Basin, China. The formation waters were brines with chloride (Cl) concentrations from 1200 to 2700 mM. Bacterial 16S rRNA gene copies ranged from 3.75 × 104 to 2.23 × 106 copies mL−1 of water, and those of archaea ranged from 2.44 × 103 to 4.66 × 107 copies mL−1 of water. Both bacterial and archaea 16 s rRNA gene copies were negatively correlated with Cl concentration. The microbial community structure differed significantly depending on Cl concentrations. At high Cl waters (>1800 mM), the microbial community showed a halophilic signature made up of several abundant taxonomic groups within Firmicules, γ‐Proteobacteria, and methylotrophic Methanosarcinales. At low Cl, Firmicules and hydrogenotrophic methanogens were dominant members. The proportion of inferred hydrogenotrophic methanogens decreased from 89% to 14% of total archaeal reads with increasing Cl concentration; in contrast, methylotrophic species increased from 11% to 85%. Given that the proportion of hydrogenotrophic species was positively correlated with the archaeal gene abundances, we suggest that Cl concentrations primarily constrain the activity of archaea catalyzing H2 reduction of CO2. Our results show that dilution of formation waters is critical in the process of biogenic gas formation, suggesting that an engineered decrease in Cl concentrations may induce methanogenesis as a potential method to increase gas reserves in such areas in the future.

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Oil Recovery: Experiences and Economics of Microbially Enhanced Oil Recovery (MEOR)

Liu¹,

Wei²

2017

Consequences of Microbial Interactions With Hydrocarbons, Oils, and Lipids: Production of Fuels and Chemicals

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Coupled hydrology and biogeochemistry of Paleocene–Eocene coal beds, northern Gulf of Mexico

Cited by 57 publications

References 65 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

Microbial consortia controlling biogenic gas formation in the Qaidam Basin of western China

Oil Recovery: Experiences and Economics of Microbially Enhanced Oil Recovery (MEOR)

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