Mobile Laboratory Observations of Methane Emissions in the Barnett Shale Region.
Mobile Laboratory Observations of Methane Emissions in the Barnett Shale Region.
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DOI：
10.1021/es506352j
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发表时间：
2015-03
影响因子：
11.4
通讯作者：
T. Yacovitch;S. Herndon;G. Pétron;J. Kofler;D. Lyon;M. Zahniser;C. Kolb
中科院分区：
文献类型：
--
作者：
T. Yacovitch;S. Herndon;G. Pétron;J. Kofler;D. Lyon;M. Zahniser;C. Kolb
介绍了2013年春季和秋季巴内特页岩协调活动期间进行的移动的地基大气测量结果。甲烷和乙烷在天然气加工厂、压缩机站和生产井场等设施的下风处连续测量。这些甲烷羽流的高斯扩散模拟，使用迭代向前羽流扩散算法，被用来估计源位置和排放量。排放源的分布在0-5 kg/h范围内达到峰值，有一个明显的尾部。乙烷/甲烷的摩尔增强比为这个相同的分布进行了研究，显示出一个峰值在1.5%和1.4%和1.17%之间的广泛的分布。源排放和乙烷/甲烷增强比的区域分布进行了研究：最大的甲烷排放量之间出现的沃斯堡和达拉斯，而最高的乙烷/甲烷增强比发生在该地区的西北部观测到的羽流。个别设施，重点是大的排放源，进一步分析了约束源的位置。
Results of mobile ground-based atmospheric measurements conducted during the Barnett Shale Coordinated Campaign in spring and fall of 2013 are presented. Methane and ethane are continuously measured downwind of facilities such as natural gas processing plants, compressor stations, and production well pads. Gaussian dispersion simulations of these methane plumes, using an iterative forward plume dispersion algorithm, are used to estimate both the source location and the emission magnitude. The distribution of emitters is peaked in the 0-5 kg/h range, with a significant tail. The ethane/methane molar enhancement ratio for this same distribution is investigated, showing a peak at ∼1.5% and a broad distribution between ∼4% and ∼17%. The regional distributions of source emissions and ethane/methane enhancement ratios are examined: the largest methane emissions appear between Fort Worth and Dallas, while the highest ethane/methane enhancement ratios occur for plumes observed in the northwestern potion of the region. Individual facilities, focusing on large emitters, are further analyzed by constraining the source location.