Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021234 |
Shallow Aquifer Vulnerability From Subsurface Fluid Injection at a Proposed Shale Gas Hydraulic Fracturing Site | |
Wilson, M. P.1; Worrall, F.1; Davies, R. J.2; Hart, A.3 | |
2017-11-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Groundwater flow resulting from a proposed hydraulic fracturing (fracking) operation was numerically modeled using 91 scenarios. Scenarios were chosen to be a combination of hydrogeological factors that a priori would control the long-term migration of fracking fluids to the shallow subsurface. These factors were induced fracture extent, cross-basin groundwater flow, deep low hydraulic conductivity strata, deep high hydraulic conductivity strata, fault hydraulic conductivity, and overpressure. The study considered the Bowland Basin, northwest England, with fracking of the Bowland Shale at approximate to 2,000 m depth and the shallow aquifer being the Sherwood Sandstone at approximate to 300-500 m depth. Of the 91 scenarios, 73 scenarios resulted in tracked particles not reaching the shallow aquifer within 10,000 years and 18 resulted in travel times less than 10,000 years. Four factors proved to have a statistically significant impact on reducing travel time to the aquifer: increased induced fracture extent, absence of deep high hydraulic conductivity strata, relatively low fault hydraulic conductivity, and magnitude of overpressure. Modeling suggests that high hydraulic conductivity formations can be more effective barriers to vertical flow than low hydraulic conductivity formations. Furthermore, low hydraulic conductivity faults can result in subsurface pressure compartmentalization, reducing horizontal groundwater flow, and encouraging vertical fluid migration. The modeled worst-case scenario, using unlikely geology and induced fracture lengths, maximum values for strata hydraulic conductivity and with conservative tracer behavior had a particle travel time of 130 years to the base of the shallow aquifer. This study has identified hydrogeological factors which lead to aquifer vulnerability from shale exploitation. |
英文关键词 | faults fracking hydraulic fracturing hydrogeology modeling shale |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418736700070 |
WOS关键词 | POTENTIAL CONTAMINANT PATHWAYS ; OVERLYING AQUIFERS ; SEDIMENTARY BASINS ; INDUCED SEISMICITY ; RESERVOIRS ; MIGRATION ; WELLS ; ENGLAND ; OIL |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/22027 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Durham, Dept Earth Sci, Sci Labs, Durham, England; 2.Newcastle Univ, Sch Nat & Environm Sci, Newcastle Upon Tyne, Tyne & Wear, England; 3.Environm Agcy, Res Assessment & Evaluat, Solihull, W Midlands, England |
推荐引用方式 GB/T 7714 | Wilson, M. P.,Worrall, F.,Davies, R. J.,et al. Shallow Aquifer Vulnerability From Subsurface Fluid Injection at a Proposed Shale Gas Hydraulic Fracturing Site[J]. WATER RESOURCES RESEARCH,2017,53(11). |
APA | Wilson, M. P.,Worrall, F.,Davies, R. J.,&Hart, A..(2017).Shallow Aquifer Vulnerability From Subsurface Fluid Injection at a Proposed Shale Gas Hydraulic Fracturing Site.WATER RESOURCES RESEARCH,53(11). |
MLA | Wilson, M. P.,et al."Shallow Aquifer Vulnerability From Subsurface Fluid Injection at a Proposed Shale Gas Hydraulic Fracturing Site".WATER RESOURCES RESEARCH 53.11(2017). |
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