Abstract This study compares oil and gas industry benchmark non-methane volatile organic compounds emission data with predicted and reported emissions from a number of recent case studies. Specifically, we contrast predicted emissions from the Tamar and Leviathan processing platforms in the Eastern Mediterranean with actual emissions where available, and with a compilation of industry benchmarks. This work reveals a series of flaws in the adopted EIA practices in the case studies discussed, starting from the emissions model that grossly underestimates intermittent NMVOC and benzene emissions relative to available data from other sites, and the unrealistic assumption of a constant and uniform emission profile in contrast to real world emission scenarios that are characterized by discrete large emission events. Furthermore, the dispersion model used in the EIAs as part of the request for a business (emissions) permit has a number of significant failings, including the use of an unsuitable model, use of over-simplistic meteorological inputs, and lack of consideration of critical dispersion phenomena. This study highlights the need to rethink the currently used environmental impact assessment and atmospheric permit request methodologies in the oil and gas industry, which rely on unrealistic uniform emission models.

中文翻译：

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从气体处理平台到大气的排放案例研究与基准

摘要 本研究将石油和天然气行业的基准非甲烷挥发性有机化合物排放数据与近期一些案例研究中预测和报告的排放数据进行比较。具体而言，我们将地中海东部的添马舰和利维坦加工平台的预测排放量与可用的实际排放量以及行业基准汇编进行了对比。这项工作揭示了所讨论的案例研究中采用的 EIA 实践中的一系列缺陷，从排放模型开始，该模型严重低估了相对于其他站点的可用数据的间歇性 NMVOC 和苯排放，以及对恒定和统一排放剖面的不切实际假设与以离散大排放事件为特征的现实世界排放情景相反。此外，作为商业（排放）许可申请的一部分，EIA 中使用的扩散模型存在许多重大缺陷，包括使用不合适的模型、使用过于简单的气象输入以及缺乏对关键扩散现象的考虑. 本研究强调需要重新考虑石油和天然气行业目前使用的环境影响评估和大气许可申请方法，这些方法依赖于不切实际的统一排放模型。