Geochemical and isotopic evolution of water produced from Middle Devonian Marcellus shale gas wells, Appalachian basin, Pennsylvania

Rowan, Elisabeth L.; Engle, Mark A.; Kræmer, Thomas; Schroeder, Karl; Hammack, Richard; Doughten, M.W.

doi:10.1306/07071413146

Cited by 128 publications

(133 citation statements)

References 42 publications

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“…[4] The δDwater values for formation water from the Marcellus Fm. in Pennsylvania are estimated from Rowan et al (85). Uncertainty on reservoir temperature is estimated at ±10 °C.…”

Section: Guaymas Basin Hydrothermal System (Rebecca's Roost Vent) Gumentioning

confidence: 99%

Nonequilibrium clumped isotope signals in microbial methane

Wang

Gruen

Lollar

et al. 2015

Science

219

338

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What controls clumped isotopes? Stable isotopes of a molecule can clump together in several combinations, depending on their mass. Even for simple molecules such as O 2 , which can contain 16 O, 17 O, and 18 O in various combinations, clumped isotopes can potentially reveal the temperatures at which molecules form. Away from equilibrium, however, the pattern of clumped isotopes may reflect a complex array of processes. Using high-resolution gas-phase mass spectrometry, Yeung et al. found that biological factors influence the clumped isotope signature of oxygen produced during photosynthesis (see the Perspective by Passey). Similarly, Wang et al. showed that away from equilibrium, kinetic effects causing isotope clumping can lead to overestimation of the temperature at which microbially produced methane forms. Science , this issue p. 431; p. 428; see also p. 394

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“…[4] The δDwater values for formation water from the Marcellus Fm. in Pennsylvania are estimated from Rowan et al (85). Uncertainty on reservoir temperature is estimated at ±10 °C.…”

Section: Guaymas Basin Hydrothermal System (Rebecca's Roost Vent) Gumentioning

confidence: 99%

Nonequilibrium clumped isotope signals in microbial methane

Wang

Gruen

Lollar

et al. 2015

Science

219

338

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“…Over time, the PW starts to largely reflect the chemical composition of the formation water. In the Marcellus Shale, PWs have elevated total dissolved solids (TDS, $200,000 mg/L) (Hayes, 2009;Rowan et al, 2010Rowan et al, , 2015Haluszczak et al, 2013) and are enriched in naturally occurring radioactive materials relative to other formations (Rowan et al, 2011). The variable inorganic chemistry can affect the suitability of PW for reuse or the strategy for disposal (Paugh et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Although the inorganic chemical composition of produced waters from Marcellus Shale wells has been characterized (Hayes, 2009;Chapman et al, 2012;Barbot et al, 2013;Rowan et al, 2015), knowledge on the presence of organic compounds is limited (Strong et al, 2013;Cluff et al, 2014;Orem et al, 2014). Hydrocarbons and synthetic organic chemicals, possibly from hydraulic fracturing chemical additives, were observed in PW samples from Marcellus Shale wells after 250 days of production (Orem et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Organic and inorganic composition and microbiology of produced waters from Pennsylvania shale gas wells

Akob

Cozzarelli

Dunlap

et al. 2015

Applied Geochemistry

191

144

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“…A portion of the injected fluid (10-15 %) returns to the surface as flowback (Jiang et al 2013) and may initially contain a signature of injected compounds until wells mature (Abualfaraj et al 2014;Strong et al 2014). Flowback fluids become increasingly enriched in salt with longer residence time in the formation (Cluff et al 2014;Rowan et al 2014) and may be re-used to fracture new wells after treatment and dilution or disposed (Jiang et al 2013;Rahm et al 2013). One environmental concern regarding these activities is the risk that injected or flowback fluids could be spilled at the surface or released from malfunctioning well casings to the shallow subsurface, which could degrade drinking water resources through chemical contamination (USEPA 2012).…”

Section: Introductionmentioning

confidence: 99%

Aerobic biodegradation of organic compounds in hydraulic fracturing fluids

et al. 2015

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Little is known of the attenuation of chemical mixtures created for hydraulic fracturing within the natural environment. A synthetic hydraulic fracturing fluid was developed from disclosed industry formulas and produced for laboratory experiments using commercial additives in use by Marcellus shale field crews. The experiments employed an internationally accepted standard method (OECD 301A) to evaluate aerobic biodegradation potential of the fluid mixture by monitoring the removal of dissolved organic carbon (DOC) from an aqueous solution by activated sludge and lake water microbial consortia for two substrate concentrations and four salinities. Microbial degradation removed from 57 % to more than 90 % of added DOC within 6.5 days, with higher removal efficiency at more dilute concentrations and little difference in overall removal extent between sludge and lake microbe treatments. The alcohols isopropanol and octanol were degraded to levels below detection limits while the solvent acetone accumulated in biological treatments through time. Salinity concentrations of 40 g/L or more completely inhibited degradation during the first 6.5 days of incubation with the synthetic hydraulic fracturing fluid even though communities were pre-acclimated to salt. Initially diverse microbial communities became dominated by 16S rRNA sequences affiliated with Pseudomonas and other Pseudomonadaceae after incubation with the synthetic fracturing fluid, taxa which may be involved in acetone production. These data expand our understanding of constraints on the biodegradation potential of organic compounds in hydraulic fracturing fluids under aerobic conditions in the event that they are accidentally released to surface waters and shallow soils.

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Geochemical and isotopic evolution of water produced from Middle Devonian Marcellus shale gas wells, Appalachian basin, Pennsylvania

Cited by 128 publications

References 42 publications

Nonequilibrium clumped isotope signals in microbial methane

Nonequilibrium clumped isotope signals in microbial methane

Organic and inorganic composition and microbiology of produced waters from Pennsylvania shale gas wells

Aerobic biodegradation of organic compounds in hydraulic fracturing fluids

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