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These electronic data are described in the supporting information. Measurements of Methane Emissions at Natural Gas Well Sites David T. Allen, Vincent M. Torres, James Thomas, David W. Sullivan, Jarett Spinhirne Matthew Harrison, Al Hendler, Meggen Delollis, Bryan Benaway, Gene Youngerman, Randy Stevens, Scott C. Herndon, Jon P. Franklin, Cody Floerchinger, Joanne Shorter, Cameron Martin, Ryan McGovern and Joda Wormhoudt Below is the data summary from measurements and estimated annual totals of methane from well liquid unloadings. Download all the data sets on this page in one Zip file. |
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| Unloadings Data Sets - Table S3-1 Adjusted CH4 in produced gas is calculated by multiplying the raw vented flow measurement by the corresponding methane in produced gas (%vol) and 0.8 (used to convert the centerline velocity in the stack to an estimated average velocity in the stack); as described in table S3-1, from the PNAS paper. The name provides the region where the site is located (AP= Appalachian, GC= Gulf Coast, MC= Midcontinent, and RM= Rocky Mountains. |
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Event |
Region |
Methane Emitted Per Event (scf) |
Events Per Year for Well |
Emissions per year for well (scf) |
GC |
191,000 |
7 |
1,337,000 |
|
GC |
159,000 |
1 |
159,000 |
|
GC |
65,900 |
1 |
65,900 |
|
RM |
1,350 |
2 |
2,700 |
|
RM |
1,320 |
4 |
5,280 |
|
RM |
950 |
2 |
1,900 |
|
AP |
11,300 |
12 |
136,000 |
|
GC |
3,800 |
12 |
45,600 |
|
GC |
79,000 |
12 |
948,000 |
|
