Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-11163-2017 |
Quantifying alkane emissions in the Eagle Ford Shale using boundary layer enhancement | |
Roest, Geoffrey; Schade, Gunnar | |
2017-09-20 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Eagle Ford Shale in southern Texas is home to a booming unconventional oil and gas industry, the climate and air quality impacts of which remain poorly quantified due to uncertain emission estimates. We used the atmospheric enhancement of alkanes from Texas Commission on Environmental Quality volatile organic compound monitors across the shale, in combination with back trajectory and dispersion modeling, to quantify C-2-C-4 alkane emissions for a region in southern Texas, including the core of the Eagle Ford, for a set of 68 days from July 2013 to December 2015. Emissions were partitioned into raw natural gas and liquid storage tank sources using gas and headspace composition data, respectively, and observed enhancement ratios. We also estimate methane emissions based on typical ethane-to-methane ratios in gaseous emissions. The median emission rate from raw natural gas sources in the shale, calculated as a percentage of the total produced natural gas in the upwind region, was 0.7% with an interquartile range (IQR) of 0.5-1.3 %, below the US Environmental Protection Agency's (EPA) current estimates. However, storage tanks contributed 17% of methane emissions, 55% of ethane, 82% percent of propane, 90% of n-butane, and 83% of isobutane emissions. The inclusion of liquid storage tank emissions results in a median emission rate of 1.0% (IQR of 0.7-1.6 %) relative to produced natural gas, overlapping the current EPA estimate of roughly 1.6 %. We conclude that emissions from liquid storage tanks are likely a major source for the observed non-methane hydrocarbon enhancements in the Northern Hemisphere. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411253700004 |
WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; NATURAL-GAS PRODUCTION ; GLOBAL ATMOSPHERIC ETHANE ; METHANE EMISSIONS ; HYDROCARBON EMISSIONS ; FUGITIVE EMISSIONS ; OZONE IMPACTS ; UNITED-STATES ; AIR-QUALITY ; HONG-KONG |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/19467 |
专题 | 地球科学 |
作者单位 | Texas A&M Univ, Dept Atmospher Sci, 3150 TAMU, College Stn, TX 77843 USA |
推荐引用方式 GB/T 7714 | Roest, Geoffrey,Schade, Gunnar. Quantifying alkane emissions in the Eagle Ford Shale using boundary layer enhancement[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(18). |
APA | Roest, Geoffrey,&Schade, Gunnar.(2017).Quantifying alkane emissions in the Eagle Ford Shale using boundary layer enhancement.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(18). |
MLA | Roest, Geoffrey,et al."Quantifying alkane emissions in the Eagle Ford Shale using boundary layer enhancement".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.18(2017). |
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