Large-sample evidence on the impact of unconventional oil and gas development on surface waters

doi:10.1126/science.aaz2185

GSTDTAP > 气候变化

DOI	10.1126/science.aaz2185
	Large-sample evidence on the impact of unconventional oil and gas development on surface waters
	Pietro Bonetti; Christian Leuz; Giovanna Michelon
	2021-08-20
发表期刊	Science
出版年	2021
英文摘要	Hydraulic fracturing uses a water-based mixture to open up tight oil and gas formations. The process is mostly contained, but concerns remain about the potential for surface water contamination. Bonetti et al. found a small increase in certain ions associated with hydraulic fracturing across several locations in the United States (see the Perspective by Hill and Ma). These small increases appeared 90 to 180 days after new wells were put in and suggest some surface water contamination. The magnitude appears small but may require that more attention be paid to monitoring near-well surface waters. Science , aaz2185, this issue p. [896][1]; see also abk3433, p. [853][2] The impact of unconventional oil and gas development on water quality is a major environmental concern. We built a large geocoded database that combines surface water measurements with horizontally drilled wells stimulated by hydraulic fracturing (HF) for several shales to examine whether temporal and spatial well variation is associated with anomalous salt concentrations in United States watersheds. We analyzed four ions that could indicate water impact from unconventional development. We found very small concentration increases associated with new HF wells for barium, chloride, and strontium but not bromide. All ions showed larger, but still small-in-magnitude, increases 91 to 180 days after well spudding. Our estimates were most pronounced for wells with larger amounts of produced water, wells located over high-salinity formations, and wells closer and likely upstream from water monitors. [1]: /lookup/doi/10.1126/science.aaz2185 [2]: /lookup/doi/10.1126/science.abk3433
领域	气候变化 ; 资源环境
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/336031
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Pietro Bonetti,Christian Leuz,Giovanna Michelon. Large-sample evidence on the impact of unconventional oil and gas development on surface waters[J]. Science,2021.
APA	Pietro Bonetti,Christian Leuz,&Giovanna Michelon.(2021).Large-sample evidence on the impact of unconventional oil and gas development on surface waters.Science.
MLA	Pietro Bonetti,et al."Large-sample evidence on the impact of unconventional oil and gas development on surface waters".Science (2021).