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Emission Reduction Options for the Onshore Natural Gas and Petroleum Production Segment

The EPA estimates methane emissions from the oil and natural gas industry in its annual Inventory of U.S. Greenhouse Gas Emissions and Sinks. The onshore natural gas and petroleum production segment contributes 35% to the total methane emissions from the oil and natural gas industry. The chart on the right shows the distribution of the top emission sources* in this segment, which represent 79% of the total emissions from onshore production. Click on each emission source category to view one of many appropriate, cost-effective methane mitigation options below. A full list of emission mitigation options can be found here.

*Note: These emission estimates have an uncertainty associated with them. Not all facilities will have the same distribution of emissions between sources. Also, some emission sources are only present in a few facilities and may not be represented in the pie chart.

This pie chart breaks out six major emission sources from the Onshore Natural Gas and Petroleum Production segment.  The largest source of emissions is from Pneumatic Device Vents, which account for 27% of emissions.  Hydraulically Fractured Well Completions and Workovers are second, accounting for 19%.  Tanks are third, making up 16% of the total emissions.  Liquids Unloading, Glycol Dehydrator Vents, and Reciprocating Compressor Rod Packing are the three remaining sources, accounting for 9%, 7%, and 1%, respectively. Other emission sources make up the remaining 21% of emissions.

“Other” Emission Sources: Uncombusted Methane, Equipment Fugitives, Pipeline Leaks, Chemical Injection Pumps, Well Fugitives, Coal Bed Methane, Stripper Wells, Blowdowns, Process Upsets, Well Drilling, Non-Hydraulically Fractured Well Workovers, Compressor Starts, Tank Fugitives, Non-Hydraulically Fractured Well Completions

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+ Options for Reducing Methane Emissions from Pneumatic Devices in the Natural Gas Industry

+ Reduced Emission Completions for Hydraulically Fractured Natural Gas Wells

+ Installing Vapor Recovery Units on Storage Tanks

+ Optimize Glycol Circulation and Install Flash Tank Separators in Glycol Dehydrators

+ Installing Plunger Lift System in Gas Wells

+ Reducing Methane Emissions from Reciprocating Compressor Rod Packing

+ Replacing Wet Seals with Dry Seals in Centrifugal Compressors

Need Help?
EPA can assist with all questions related to technologies and practices to reduce methane emissions. To contact us click here.


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