1. significant fugitive/venting source categories for discussion – May 4-5, 2009
Fugitives
Wellhead
Compression
Gathering
Processing (sweetening, pressure relief, pigging, O, G, NGL)
Venting
Pneumatic Devices
Pumps
Amine units
Well Blow-downs
Well Completion Venting
Condensate Tanks
Oil Tanks
Dehydrators including pumps
Gathering systems – pipelines, et cetera
Truck & vessel loading – small?

2. Followup Fugitive/Venting Methodology Questions for TWG
Estimating well completion emissions
Method used to estimate volume
Engineering
Orifice choke point
Variables
Delta P
Temperature and Pressure
Gas composition
Frequency with which these data are collected
Estimating emissions from workovers
Oil vs. gas – how are these different in your operation
Input variables
Methods for estimating of Venting Volumes
Gas Composition
Surface pressure
Estimating venting from liquids unloading
Well Volume (orifice meter & stopwatch)
Number of sample wells to determine empirical relationship
Component count data collection