Microbial generation of economic accumulations of methane within a shallow organic-rich shale

@article{Martini1996MicrobialGO,
  title={Microbial generation of economic accumulations of methane within a shallow organic-rich shale},
  author={Anna M. Martini and Joyce M. Budai and Lynn M. Walter and Martin Schoell},
  journal={Nature},
  year={1996},
  volume={383},
  pages={155-158}
}
ALTHOUGH methane of bacterial origin is ubiquitous in marine and freshwater sediments, economic accumulations of bacterial gases occur mainly at depths of several kilometres in Tertiary basins that had high sedimentation rates1,2. Here we present an integration of geochemical and isotopic data from gas and water extracted from the Upper Devonian Antrim shale, along the northern margin of the Michigan basin, which demonstrates that significant volumes of bacterial gas have been generated in… Expand
Microbial production and modification of gases in sedimentary basins: A geochemical case study from a Devonian shale gas play, Michigan basin
An expanded data set for gases produced from the Antrim Shale, a Devonian black shale in the Michigan basin, United States, has allowed for a detailed examination of the related chemical and isotopicExpand
Genetic and temporal relations between formation waters and biogenic methane: Upper Devonian Antrim Shale, Michigan Basin, USA
Abstract Controversy remains regarding how well geochemical criteria can distinguish microbial from thermogenic methane. Natural gas in most conventional deposits has migrated from a source rock to aExpand
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Impact of commercial natural gas production on geochemistry and microbiology in a shale-gas reservoir
Abstract We consider the effect that commercial gas production has had on microbiology and water and gas geochemistry in the northern producing trend of the Antrim Shale, an unconventional gasExpand
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Abstract Despite the important contribution of biogenic methane to natural gas resources worldwide, little is known about the methane production potential of microbes in deep subsurface environments.Expand
Identification of microbial and thermogenic gas components from Upper Devonian black shale cores, Illinois and Michigan basins
Differentiation of microbial versus thermogenic methane in coalbed and black shale accumulations can affect strategies for exploration and may influence the total gas content in a given area. EarlyExpand
Identifying thermogenic and microbial methane in deep water Gulf of Mexico Reservoirs
Abstract The Gulf of Mexico (GOM) produces 5% of total U.S. dry gas production ( USEIA, 2016 ). Despite this, the proportion of microbial and thermogenic methane in discovered and producing fieldsExpand
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Methane (CH 4 ) is an important greenhouse gas and amplifier of climate change. However, the causes of atmospheric CH 4 variations over glacial-interglacial cycles remain unresolved. We propose thatExpand
Temporal changes in microbial ecology and geochemistry in produced water from hydraulically fractured Marcellus shale gas wells.
TLDR
There was a reduction in microbial richness and diversity after fracturing, with the lowest diversity at 49 days, and Thirty-one taxa dominated injected, flowback, and produced water communities, which took on distinct signatures as injected carbon and electron acceptors were attenuated within the shale. Expand
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