Anthropogenic and natural methane emissions from a shale gas exploration area of Quebec, Canada

Pinti, Daniele L.; Gélinas, Yves; Moritz, Anja; Larocque, Marie; Sano, Yuji

doi:10.1016/j.scitotenv.2016.05.193

Cited by 11 publications

(8 citation statements)

References 43 publications

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“…The deep geological methane cycle still has to be well constrained 8 . Much attention has recently focused on the sources of radiocarbon-free geological methane (i.e., older than 40kyrs) in the domain of petroleum geochemistry and microbiology 11 – 13 .…”

Section: Introductionmentioning

confidence: 99%

Origin of methane-rich natural gas at the West Pacific convergent plate boundary

Sano

Kinoshita

Kagoshima

et al. 2017

Sci Rep

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Methane emission from the geosphere is generally characterized by a radiocarbon-free signature and might preserve information on the deep carbon cycle on Earth. Here we report a clear relationship between the origin of methane-rich natural gases and the geodynamic setting of the West Pacific convergent plate boundary. Natural gases in the frontal arc basin (South Kanto gas fields, Northeast Japan) show a typical microbial signature with light carbon isotopes, high CH4/C2H6 and CH4/3He ratios. In the Akita-Niigata region – which corresponds to the slope stretching from the volcanic-arc to the back-arc –a thermogenic signature characterize the gases, with prevalence of heavy carbon isotopes, low CH4/C2H6 and CH4/3He ratios. Natural gases from mud volcanoes in South Taiwan at the collision zone show heavy carbon isotopes, middle CH4/C2H6 ratios and low CH4/3He ratios. On the other hand, those from the Tokara Islands situated on the volcanic front of Southwest Japan show the heaviest carbon isotopes, middle CH4/C2H6 ratios and the lowest CH4/3He ratios. The observed geochemical signatures of natural gases are clearly explained by a mixing of microbial, thermogenic and abiotic methane. An increasing contribution of abiotic methane towards more tectonically active regions of the plate boundary is suggested.

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Section: Introductionmentioning

confidence: 99%

Origin of methane-rich natural gas at the West Pacific convergent plate boundary

Sano

Kinoshita

Kagoshima

et al. 2017

Sci Rep

Self Cite

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“…6,7 Monitoring shale gas production areas such as those in Baltimore, MD, and Washington, DC, has shown significant increases in methane and ethane concentrations. 8,9 The most obvious concern is the release of methane, as it has a global warming potential of [28][29][30][31][32][33][34] times that of carbon dioxide over a 100-year time frame. 10 In addition to global warming, air pollutants from shale gas wells may harm people.…”

Section: Literature Reviewmentioning

confidence: 99%

“…In addition, uncontrollable factors such as potential human factors and pipeline facilities also lead to methane leakage. 33 Last but not least, shale gas combustion causes air pollution. The combustion of shale gas releases nitrogen oxides in the air, resulting in ground-level ozone pollution through chemical reactions.…”

Section: Impacts Of Shale Gas Development On the Atmospherementioning

confidence: 99%

Measuring the air pollution cost of shale gas development in China

Pang

Zhang

et al. 2019

Energy & Environment

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Shale gas is one of the most promising unconventional hydrocarbon resources in the 21st century. In recent years, economically recoverable reserves have achieved explosive growth, and drilling techniques have made large breakthroughs. As a clean unconventional energy, shale gas is given substantial consideration by governments. However, the cleanliness of shale gas has been questioned for causing serious air pollution during production. To further measure the air pollution cost during the exploration and transportation of shale gas, this article establishes an economic measurement model of the air pollution cost from the three aspects of human health, social cost and ecological cost by reviewing the relevant literature in the United States and China. This study lays a foundation for further calculating the cost of air pollution around shale gas fields.

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“…19−22 In addition, groundwater extraction by human activities also results in methane degassing. 20,21,23 Thus, identifying potentially enhanced methane transport into groundwater aquifers from UOG is an important first step to understand methane emissions via hydrogeological pathways and determine the true GHG benefit of natural gas utilization.…”

Section: ■ Introductionmentioning

confidence: 99%

Groundwater Methane in Northeastern Pennsylvania Attributable to Thermogenic Sources and Hydrogeomorphologic Migration Pathways

Thelemaque

Siegel

et al. 2021

Environ. Sci. Technol.

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Conflicting evidence exists as to whether or not unconventional oil and gas (UOG) development has enhanced methane transport into groundwater aquifers over the past 15 years. In this study, recent groundwater samples were collected from 90 domestic wells and 4 springs in Northeastern Pennsylvania located above the Marcellus Shale after more than a decade of UOG development. No statistically significant correlations were observed between the groundwater methane level and various UOG geospatial metrics, including proximity to UOG wells and well violations, as well as the number of UOG wells and violations within particular radii. The δ 13 C and methane-tohigher chain hydrocarbon signatures suggested that the elevated methane levels were not attributable to UOG development nor could they be explained by using simple biogenic−thermogenic end-member mixing models. Instead, groundwater methane levels were significantly correlated with geochemical water type and topographical location. Comparing a subset of contemporary methane measurements to their co-located pre-drilling records (n = 64 at 49 distinct locations) did not indicate systematic increases in methane concentration but did reveal several cases of elevated concentration (n = 12) across a spectrum of topographies. Multiple lines of evidence suggested that the high-concentration groundwater methane could have originated from shallow thermogenic methane that migrated upward into groundwater aquifers with Appalachian Basin brine.

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Anthropogenic and natural methane emissions from a shale gas exploration area of Quebec, Canada

Cited by 11 publications

References 43 publications

Origin of methane-rich natural gas at the West Pacific convergent plate boundary

Origin of methane-rich natural gas at the West Pacific convergent plate boundary

Measuring the air pollution cost of shale gas development in China

Groundwater Methane in Northeastern Pennsylvania Attributable to Thermogenic Sources and Hydrogeomorphologic Migration Pathways

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