دورية أكاديمية
أعرض في EDS

Geochemical evidence for fugitive gas contamination and associated water quality changes in drinking-water wells from Parker County, Texas.

التفاصيل البيبلوغرافية
العنوان: Geochemical evidence for fugitive gas contamination and associated water quality changes in drinking-water wells from Parker County, Texas.
المؤلفون: Whyte CJ; Divisions of Solid Earth Dynamics and Water, Climate and the Environment, School of Earth Sciences, The Ohio State University, Columbus, OH 43210, USA; Global Water Institute, The Ohio State University, Columbus, OH 43210, USA., Vengosh A; Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC 27708, USA., Warner NR; Civil and Environmental Engineering, Pennsylvania State University, University Park, PA 16802, USA., Jackson RB; Department of Earth System Science, Woods Institute for the Environment, and Precourt Institute for Energy, Stanford University, Stanford, CA 94305, USA., Muehlenbachs K; Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G2E3, Canada., Schwartz FW; Divisions of Solid Earth Dynamics and Water, Climate and the Environment, School of Earth Sciences, The Ohio State University, Columbus, OH 43210, USA; Global Water Institute, The Ohio State University, Columbus, OH 43210, USA., Darrah TH; Divisions of Solid Earth Dynamics and Water, Climate and the Environment, School of Earth Sciences, The Ohio State University, Columbus, OH 43210, USA; Global Water Institute, The Ohio State University, Columbus, OH 43210, USA. Electronic address: darrah.24@osu.edu.
المصدر: The Science of the total environment [Sci Total Environ] 2021 Aug 01; Vol. 780, pp. 146555. Date of Electronic Publication: 2021 Mar 18.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0330500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1026 (Electronic) Linking ISSN: 00489697 NLM ISO Abbreviation: Sci Total Environ Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Amsterdam, Elsevier.
مواضيع طبية MeSH: Groundwater* , Water Pollutants, Chemical*/analysis, Environmental Monitoring ; Methane/analysis ; Natural Gas ; Oil and Gas Fields ; Texas ; Water Quality ; Water Wells
مستخلص: Extensive development of horizontal drilling and hydraulic fracturing enhanced energy production but raised concerns about drinking-water quality in areas of shale-gas development. One particularly controversial case that has received significant public and scientific attention involves possible contamination of groundwater in the Trinity Aquifer in Parker County, Texas. Despite extensive work, the origin of natural gas in the Trinity Aquifer within this study area is an ongoing debate. Here, we present a comprehensive geochemical dataset collected across three sampling campaigns along with integration of previously published data. Data include major and trace ions, molecular gas compositions, compound-specific stable isotopes of hydrocarbons (δ 13 C-CH 4 , δ 13 C-C 2 H 6 , δ 2 H-CH 4 ), dissolved inorganic carbon (δ 13 C-DIC), nitrogen (δ 15 N-N 2 ), water (δ 18 O, δ 2 H, 3 H), and noble gases (He, Ne, Ar), boron (δ 11 B) and strontium ( 87 Sr/ 86 Sr) isotopic compositions of water samples from 20 drinking-water wells from the Trinity Aquifer. The compendium of data confirms mixing between a deep, naturally occurring salt- (Cl >250 mg/L) and hydrocarbon-rich groundwater with a low-salinity, shallower, and younger groundwater. Hydrocarbon gases display strong evidence for sulfate reduction-paired oxidation, in some cases followed by secondary methanogenesis. A subset of drinking-water wells contains elevated levels of hydrocarbons and depleted atmospherically-derived gas tracers, which is consistent with the introduction of fugitive thermogenic gas. We suggest that gas originating from the intermediate-depth Strawn Group ("Strawn") is flowing along the annulus of a Barnett Shale gas well, and is subsequently entering the shallow aquifer system. This interpretation is supported by the expansion in the number of affected drinking-water wells during our study period and the persistence of hydrocarbon levels over time. Our data suggest post-genetic secondary water quality changes occur following fugitive gas contamination, including sulfate reduction paired with hydrocarbon oxidation and secondary methanogenesis. Importantly, no evidence for upward migration of brine or natural gas associated with the Barnett Shale was identified.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Published by Elsevier B.V.)
فهرسة مساهمة: Keywords: Groundwater; Hydraulic fracturing; Methane; Methane oxidation; Stray-gas contamination; Sulfate reduction
المشرفين على المادة: 0 (Natural Gas)
0 (Water Pollutants, Chemical)
OP0UW79H66 (Methane)
تواريخ الأحداث: Date Created: 20210525 Date Completed: 20210528 Latest Revision: 20210528
رمز التحديث: 20221213
DOI: 10.1016/j.scitotenv.2021.146555
PMID: 34030322
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-1026
DOI:10.1016/j.scitotenv.2021.146555