Dissolved-gas concentrations in ground water in West Virginia, 1997-2005

White, Jeremy S.; Mathes, M.V.

doi:10.3133/ds156

Cited by 11 publications

(12 citation statements)

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“…Our findings in the Western Area are also consistent with local and national historical waterquality studies (e.g., Ohio USEPA, 2012;Gross and Low, 2012;Chambers et al 2012;Ayotte et al 2011;DeSimone et al 2009;DeSimone 2008;USGS, 2006;McAuley and Kozar 2006;White and Mathes, 2006;Stoner et al 1987;Razem and Sedam 1985;and Matisoff, et al 1982). For example, Razem and Sedam (1985) noted in a study of 100 groundwater samples collected in 1983 that SMCLs were commonly exceeded for TDS (38%), manganese (34%), iron (19%), and sulfate (17%) among other constituents, and that 62% of the samples analyzed exceeded the sodium HAL of 20 mg/L.…”

Section: Western Areasupporting

confidence: 89%

Pre-drilling water-quality data of groundwater prior to shale gas drilling in the Appalachian Basin: Analysis of the Chesapeake Energy Corporation dataset

Siegel

Smith²,

Perry³

et al. 2015

Applied Geochemistry

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Section: Western Areasupporting

confidence: 89%

Pre-drilling water-quality data of groundwater prior to shale gas drilling in the Appalachian Basin: Analysis of the Chesapeake Energy Corporation dataset

Siegel

Smith²,

Perry³

et al. 2015

Applied Geochemistry

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“…For example, in the Marcellus Shale in the northeastern United States, Osborn et al (), Jackson et al (, ), and Ingraffea et al () concluded that at least some of the shallow methane was sourced from leaky gas wells. Conversely, Molofsky et al (), Siegel et al (, ), Christian et al (), and some U.S. Geological Survey (USGS) authors, Heisig and Scott () in central New York state and White and Mathes () in West Virginia, stated that the presence of thermogenic methane is mostly natural and correlated with the topography. Other studies either did not find elevated methane concentrations or established that the methane was of microbial origin.…”

Section: Introductionmentioning

confidence: 99%

Controls on Methane Occurrences in Shallow Aquifers Overlying the Haynesville Shale Gas Field, East Texas

et al. 2017

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Understanding the source of dissolved methane in drinking-water aquifers is critical for assessing potential contributions from hydraulic fracturing in shale plays. Shallow groundwater in the Texas portion of the Haynesville Shale area (13,000 km ) was sampled (70 samples) for methane and other dissolved light alkanes. Most samples were derived from the fresh water bearing Wilcox formations and show little methane except in a localized cluster of 12 water wells (17% of total) in a approximately 30 × 30 km area in Southern Panola County with dissolved methane concentrations less than 10 mg/L. This zone of elevated methane is spatially associated with the termination of an active fault system affecting the entire sedimentary section, including the Haynesville Shale at a depth more than 3.5 km, and with shallow lignite seams of Lower Wilcox age at a depth of 100 to 230 m. The lignite spatial extension overlaps with the cluster. Gas wetness and methane isotope compositions suggest a mixed microbial and thermogenic origin with contribution from lignite beds and from deep thermogenic reservoirs that produce condensate in most of the cluster area. The pathway for methane from the lignite and deeper reservoirs is then provided by the fault system.

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“…The now decade-old rapid development of U.S. shale oil and gas plays has renewed discussions about impacts of the oil and gas industry on fresh water resources (Nicot and Scanlon 2012;Jackson et al 2013b;Vidic et al 2013;Soeder et al 2014;Stephens 2015). Several recent studies have investigated the presence of methane in shallow aquifers in the footprint of the Marcellus Shale in the northeastern United States (White and Mathes 2006;Osborn et al 2011;Warner et al 2012;Heisig and Scott 2013;Jackson et al 2013a;Molofsky et al 2013;Darrah et al 2014;Sharma et al 2014;Siegel et al 2015), of the Fayetteville Shale in Arkansas (Warner et al 2013), of the Bakken Play in North Dakota (McMahon et al 2015), of the Niobrara Play in Colorado (Li and Carlson 2014), of the Haynesville Play in East Texas (Nicot et al 2017a), and of the Barnett Shale in North Texas (Darrah et al 2014;Wen et al 2016;Nicot et al 2017b2017b). Other studies have also been performed in Canada (Cheung et al 2010;Moritz et al 2015;Humez et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Controls on Methane Occurrences in Aquifers Overlying the Eagle Ford Shale Play, South Texas

et al. 2017

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Assessing natural vs. anthropogenic sources of methane in drinking water aquifers is a critical issue in areas of shale oil and gas production. The objective of this study was to determine controls on methane occurrences in aquifers in the Eagle Ford Shale play footprint. A total of 110 water wells were tested for dissolved light alkanes, isotopes of methane, and major ions, mostly in the eastern section of the play. Multiple aquifers were sampled with approximately 47 samples from the Carrizo-Wilcox Aquifer (250-1200 m depth range) and Queen City-Sparta Aquifer (150-900 m depth range) and 63 samples from other shallow aquifers but mostly from the Catahoula Formation (depth <150 m). Besides three shallow wells with unambiguously microbial methane, only deeper wells show significant dissolved methane (22 samples >1 mg/L, 10 samples >10 mg/L). No dissolved methane samples exhibit thermogenic characteristics that would link them unequivocally to oil and gas sourced from the Eagle Ford Shale. In particular, the well water samples contain very little or no ethane and propane (C1/C2+C3 molar ratio >453), unlike what would be expected in an oil province, but they also display relatively heavier δ C (>-55‰) and δD (>-180‰). Samples from the deeper Carrizo and Queen City aquifers are consistent with microbial methane sourced from syndepositional organic matter mixed with thermogenic methane input, most likely originating from deeper oil reservoirs and migrating through fault zones. Active oxidation of methane pushes δ C and δD toward heavier values, whereas the thermogenic gas component is enriched with methane owing to a long migration path resulting in a higher C1/C2+C3 ratio than in the local reservoirs.

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Dissolved-gas concentrations in ground water in West Virginia, 1997-2005

Cited by 11 publications

References 0 publications

Pre-drilling water-quality data of groundwater prior to shale gas drilling in the Appalachian Basin: Analysis of the Chesapeake Energy Corporation dataset

Pre-drilling water-quality data of groundwater prior to shale gas drilling in the Appalachian Basin: Analysis of the Chesapeake Energy Corporation dataset

Controls on Methane Occurrences in Shallow Aquifers Overlying the Haynesville Shale Gas Field, East Texas

Controls on Methane Occurrences in Aquifers Overlying the Eagle Ford Shale Play, South Texas

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