Measurements of methane emissions from natural gas gathering facilities and processing plants: measurement methods

Facility-level methane emissions were measured at 114 gathering facilities and 16 processing plants in the United States natural gas system. At gathering facilities, the measured methane emission rates ranged from 0.7 to 700 kg per hour (kg/h) (0.6 to 600 standard cubic feet per minute (scfm)). Normalized emissions (as a % of total methane throughput) were less than 1% for 85 gathering facilities and 19 had normalized emissions less than 0.1%. The range of methane emissions rates for processing plants was 3 to 600 kg/h (3 to 524 scfm), corresponding to normalized methane emissions rates <1% in all cases. The distributions of methane emissions, particularly for gathering facilities, are skewed. For example, 30% of gathering facilities contribute 80% of the total emissions. Normalized emissions rates are negatively correlated with facility throughput. The variation in methane emissions also appears driven by differences between inlet and outlet pressure, as well as venting and leaking equipment. Substantial...

[1]  Scott C. Herndon,et al.  Industrial Flare Performance at Low Flow Conditions. 1. Study Overview , 2012 .

[2]  David D. Nelson,et al.  A high precision pulsed quantum cascade laser spectrometer for measurements of stable isotopes of carbon dioxide , 2005 .

[3]  Allen L Robinson,et al.  Methane Emissions from United States Natural Gas Gathering and Processing. , 2015, Environmental science & technology.

[4]  Casey Quinn,et al.  Methane Emissions from the Natural Gas Transmission and Storage System in the United States. , 2015, Environmental science & technology.

[5]  Daniel Zimmerle,et al.  Measurements of methane emissions from natural gas gathering facilities and processing plants: measurement methods , 2014 .

[6]  E. Dlugokencky,et al.  Reply to comment on “Hydrocarbon emissions characterization in the Colorado Front Range—A pilot study” by Michael A. Levi , 2013 .

[7]  Joanne H. Shorter,et al.  Collection of Leakage Statistics in the Natural Gas System by Tracer Methods , 1997 .

[8]  B. Lamb,et al.  Isoprene emission fluxes determined by an atmospheric tracer techniquE , 1986 .

[9]  Michael A. Levi.  Comment on “Hydrocarbon emissions characterization in the Colorado Front Range: A pilot study” by Gabrielle Pétron et al. , 2012 .

[10]  Jigger Jummonville.  Tutorial On Cryogenic Turboexpanders. , 2004 .

[11]  Eladio Knipping,et al.  Atmospheric emission characterization of Marcellus shale natural gas development sites. , 2015, Environmental science & technology.

[12]  M. R. Harrison,et al.  Estimate of methane emissions from the U.S. natural gas industry. , 1997, Chemosphere.

[13]  Daniel Zimmerle,et al.  Methane emissions from natural gas compressor stations in the transmission and storage sector: measurements and comparisons with the EPA greenhouse gas reporting program protocol. , 2015, Environmental science & technology.

[14]  A. Kidnay,et al.  Fundamentals of Natural Gas Processing, Second Edition , 2011 .

[15]  M. Zahniser,et al.  Demonstration of an ethane spectrometer for methane source identification. , 2014, Environmental science & technology.

[16]  E. Kort,et al.  Methane Leaks from North American Natural Gas Systems , 2014, Science.

[17]  Daniel Zavala-Araiza,et al.  Atmospheric hydrocarbon emissions and concentrations in the barnett shale natural gas production region. , 2014, Environmental science & technology.

[18]  Gabrielle Pétron,et al.  A new look at methane and nonmethane hydrocarbon emissions from oil and natural gas operations in the Colorado Denver‐Julesburg Basin , 2014 .

[19]  M. Whiticar.  Correlation of Natural Gases with Their Sources: Chapter 16: Part IV. Identification and Characterization , 1994 .

[20]  J. Seinfeld,et al.  Atmospheric Chemistry and Physics: From Air Pollution to Climate Change , 1997 .

[21]  C E Kolb,et al.  Development of atmospheric tracer methods to measure methane emissions from natural gas facilities and urban areas. , 1995, Environmental science & technology.

[22]  Milton R. Beychok,et al.  Fundamentals of Stack Gas Dispersion , 2005 .

[23]  Gabrielle Pétron,et al.  Hydrocarbon emissions characterization in the Colorado Front Range: A pilot study , 2012 .

[24]  J. Barry McManus,et al.  Methane Emissions at Nine Landfill Sites in the Northeastern United States , 1999 .

[25]  Touché Howard,et al.  Direct measurements show decreasing methane emissions from natural gas local distribution systems in the United States. , 2015, Environmental science & technology.

[26]  Rodrigo Jimenez,et al.  Atmospheric trace gas measurements using a dual quantum-cascade laser mid-infrared absorption spectrometer , 2005, SPIE OPTO.

[27]  Joanne H. Shorter,et al.  Landfill methane emissions measured by enclosure and atmospheric tracer methods , 1996 .

[28]  John C. Lin,et al.  Coupled weather research and forecasting–stochastic time-inverted lagrangian transport (WRF–STILT) model , 2010 .

[29]  Gary T. Rochelle,et al.  Amine Scrubbing for CO2 Capture , 2009, Science.

[30]  C E Kolb,et al.  The influence of atmospheric pressure on landfill methane emissions. , 2003, Waste management.

[31]  James Thomas,et al.  Measurements of methane emissions at natural gas production sites in the United States , 2013, Proceedings of the National Academy of Sciences.

[32]  James J Winebrake,et al.  Greater focus needed on methane leakage from natural gas infrastructure , 2012, Proceedings of the National Academy of Sciences.

[33]  Scott C Herndon,et al.  Characterization of urban pollutant emission fluxes and ambient concentration distributions using a mobile laboratory with rapid response instrumentation. , 2005, Faraday discussions.

[34]  E. Crosson,et al.  A cavity ring-down analyzer for measuring atmospheric levels of methane, carbon dioxide, and water vapor , 2008 .

[35]  Gabrielle Pétron,et al.  Methane emissions estimate from airborne measurements over a western United States natural gas field , 2013 .