核心概念
The author highlights the significant discrepancy between official estimates and actual methane emissions from oil and gas systems in the USA, emphasizing the importance of integrating aerial measurements for accurate quantification.
要約
Aerial surveys reveal substantial methane emissions not accounted for in official estimates, with regional inventories showing a range from 0.75% to 9.63% of production. Well sites and midstream facilities are identified as major contributors, with emissions representing significant economic and social costs. Continuous remote-sensing surveys are proposed for effective mitigation strategies and technology assessment.
統計
Total estimated emissions range from 0.75% to 9.63% of covered natural gas production.
Only 0.05–1.66% of well sites contribute the majority of well site emissions in most surveys.
Ancillary midstream facilities contribute 18–57% of estimated regional emissions.
The emissions represent an annual loss of roughly US$1 billion in commercial gas value and a US$9.3 billion annual social cost.
引用
"Repeated, comprehensive, regional remote-sensing surveys offer a path to detect these low-frequency, high-consequence emissions for rapid mitigation."
"Well sites and midstream facilities are identified as major contributors to methane emissions."