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DOI | 10.1073/pnas.1711472115 |
Impact of an historic underground gas well blowout on the current methane chemistry in a shallow groundwater system | |
Schout, Gilian1,2,3; Hartog, Niels2,3; Hassanizadeh, S. Majid2; Griffioen, Jasper1,4 | |
2018-01-09 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:2页码:296-301 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands |
英文摘要 | Blowouts present a small but genuine risk when drilling into the deep subsurface and can have an immediate and significant impact on the surrounding environment. Nevertheless, studies that document their long-term impact are scarce. In 1965, a catastrophic underground blowout occurred during the drilling of a gas well in the Netherlands, which led to the uncontrolled release of large amounts of natural gas from the reservoir to the surface. In this study, the remaining impact on methane chemistry in the overlying aquifers was investigated. Methane concentrations higher than 10 mg/L (n = 12) were all found to have delta C-13-CH4 values larger than-30%, typical of a thermogenic origin. Both delta C-13-CH4 and delta D-CH4 correspond to the isotopic composition of the gas reservoir. Based on analysis of local groundwater flow conditions, this methane is not a remnant but most likely the result of ongoing leakage from the reservoir as a result of the blowout. Progressive enrichment of both delta C-13-CH4 and delta D-CH4 is observed with increasing distance and decreasing methane concentrations. The calculated isotopic fractionation factors of g(C) = 3 and g(D) = 54 suggest anaerobic methane oxidation is partly responsible for the observed decrease in concentrations. Elevated dissolved iron and manganese concentrations at the fringe of the methane plume show that oxidation is primarily mediated by the reduction of iron and manganese oxides. Combined, the data reveal the long-term impact that underground gas well blowouts may have on groundwater chemistry, as well as the important role of anaerobic oxidation in controlling the fate of dissolved methane. |
英文关键词 | groundwater contamination well blowouts methane isotopic fingerprinting anaerobic methane oxidation |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419686400044 |
WOS关键词 | DRINKING-WATER WELLS ; LOS-ANGELES ; CONTAMINATION ; OXIDATION ; MARCELLUS ; CARBON ; OIL ; GEOCHEMISTRY ; HAZARDS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204912 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Utrecht, Copernicus Inst Sustainable Dev, NL-3584 CS Utrecht, Netherlands; 2.Univ Utrecht, Earth Sci Dept, NL-3584 CD Utrecht, Netherlands; 3.KWR Water Cycle Res Inst, Geohydrol Unit, NL-3433 PE Nieuwegein, Netherlands; 4.Nederlandse Org Toegepast Nat Wetenschappelijk Ond, Geol Survey Netherlands, NL-3584 CB Utrecht, Netherlands |
推荐引用方式 GB/T 7714 | Schout, Gilian,Hartog, Niels,Hassanizadeh, S. Majid,et al. Impact of an historic underground gas well blowout on the current methane chemistry in a shallow groundwater system[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(2):296-301. |
APA | Schout, Gilian,Hartog, Niels,Hassanizadeh, S. Majid,&Griffioen, Jasper.(2018).Impact of an historic underground gas well blowout on the current methane chemistry in a shallow groundwater system.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(2),296-301. |
MLA | Schout, Gilian,et al."Impact of an historic underground gas well blowout on the current methane chemistry in a shallow groundwater system".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.2(2018):296-301. |
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