Large uncertainty in emissions factor used for upstream greenhouse gas emissions
NETL is developing a method for calculating shale gas greenhouse gas emissions factors that handles uncertainties and can be applied to various shale gas basins
Limited number of high-quality field data sets representative of shale gas operations
NETL is performing field measurements to evaluate both ambient (regional effects) and point-source (specific process component) air emissions, with a current focus in the Appalachian Basin
NETL Greenhouse Gas Life Cycle Analysis model needs better information for production activities to reduce uncertainties in overall GHG emission estimates
Updated emissions factors based on NETL methodology, and field data from Appalachian Basin monitoring, will reduce uncertainties in the NETL shale gas greenhouse gas life cycle assessment.