Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1809013115 |
Detecting and explaining why aquifers occasionally become degraded near hydraulically fractured shale gas wells | |
Woda, Josh1; Wen, Tao2; Oakley, David1,3; Yoxtheimer, David; Engelder, Terry1; Castro, M. Clara4; Brantley, Susan L.1,2 | |
2018-12-04 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:49页码:12349-12358 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Extensive development of shale gas has generated some concerns about environmental impacts such as the migration of natural gas into water resources. We studied high gas concentrations in waters at a site near Marcellus Shale gas wells to determine the geological explanations and geochemical implications. The local geology may explain why methane has discharged for 7 years into groundwater, a stream, and the atmosphere. Gas may migrate easily near the gas wells in this location where the Marcellus Shale dips significantly, is shallow (similar to 1 km), and is more fractured. Methane and ethane concentrations in local water wells increased after gas development compared with predrilling concentrations reported in the region. Noble gas and isotopic evidence are consistent with the upward migration of gas from the Marcellus Formation in a free-gas phase. This upflow results in microbially mediated oxidation near the surface. Iron concentrations also increased following the increase of natural gas concentrations in domestic water wells. After several months, both iron and SO42- concentrations dropped. These observations are attributed to iron and SO42- reduction associated with newly elevated concentrations of methane. These temporal trends, as well as data from other areas with reported leaks, document a way to distinguish newly migrated methane from preexisting sources of gas. This study thus documents both geologically risky areas and geochemical signatures of iron and SO42- that could distinguish newly leaked methane from older methane sources in aquifers. |
英文关键词 | shale gas water quality methane noble gases hydraulic fracturing |
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:000452124700029 |
WOS关键词 | ANAEROBIC METHANE OXIDATION ; NOBLE-GAS ; NATURAL GASES ; ISOTOPIC COMPOSITION ; BRINE MIGRATION ; STRAY GAS ; GROUNDWATER ; PENNSYLVANIA ; CONTAMINATION ; GEOCHEMISTRY |
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/205022 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Penn State Univ, Dept Geosci, University Pk, PA 16802 USA; 2.Penn State Univ, Earth & Environm Syst Inst, University Pk, PA 16802 USA; 3.Penn State Univ, Marcellus Ctr Outreach & Res, University Pk, PA 16802 USA; 4.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Woda, Josh,Wen, Tao,Oakley, David,et al. Detecting and explaining why aquifers occasionally become degraded near hydraulically fractured shale gas wells[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(49):12349-12358. |
APA | Woda, Josh.,Wen, Tao.,Oakley, David.,Yoxtheimer, David.,Engelder, Terry.,...&Brantley, Susan L..(2018).Detecting and explaining why aquifers occasionally become degraded near hydraulically fractured shale gas wells.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(49),12349-12358. |
MLA | Woda, Josh,et al."Detecting and explaining why aquifers occasionally become degraded near hydraulically fractured shale gas wells".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.49(2018):12349-12358. |
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