Use of Short Duration Measurements to Estimate Methane Emissions at Oil and Gas Production Sites,Environmental Science & Technology Letters

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Use of Short Duration Measurements to Estimate Methane Emissions at Oil and Gas Production Sites
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2021-04-29 , DOI: 10.1021/acs.estlett.1c00239
Erin E. Tullos ₁ , Shannon N. Stokes ₁ , Felipe J. Cardoso-Saldaña ₂ , Scott C. Herndon ₃ , Brendan J. Smith ₄ , David T. Allen ₁

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Methane emission estimates for oil and gas production sites, based on observations lasting seconds to minutes, are becoming more common, but interpreting the emission estimates is challenging. Short-term observations made at the same sites, within days of one another, can lead to very different emission estimates. Using two independent sets of short duration measurements made at a group of 33 dry-gas production sites, this work demonstrates that sets of short duration measurements can be reconciled if distributions of emissions at multiple sites, rather than measurements at individual sites, are compared. This work also demonstrates that short duration measurements made at the equipment level can be extrapolated to longer term emission estimates for individual sites using models that account for intermittency in emissions. This approach can predict expected ranges of emissions for additional sites and can be used to identify site level observations that are outside of predicted ranges, which indicate potential abnormal emissions.

中文翻译：

使用短期测量估算石油和天然气生产现场的甲烷排放

基于持续数秒到数分钟的观测，对石油和天然气生产场地的甲烷排放估算正变得越来越普遍，但解释排放估算具有挑战性。在同一地点进行的短期观察，在几天之内，可能会导致非常不同的排放估计。使用在一组 33 个干气生产站点进行的两组独立的短期测量，这项工作表明，如果比较多个站点的排放分布，而不是单个站点的测量，则可以协调短期测量组。这项工作还表明，在设备级别进行的短期测量可以使用考虑排放间歇性的模型外推到单个站点的长期排放估计。

更新日期：2021-06-08

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