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Methane emissions measurements of natural gas components using a utility terrain vehicle and portable methane quantification system
AbstractGreenhouse Gas (GHG) emissions are a growing problem in the United States (US). Methane (CH4) is a potent GHG produced by several stages of the natural gas sector. Current scrutiny focuses on the natural gas boom associated with unconventional shale gas; however, focus should still be given to conventional wells and outdated equipment. In an attempt to quantify these emissions, researchers modified an off-road utility terrain vehicle (UTV) to include a Full Flow Sampling system (FFS) for methane quantification. GHG emissions were measured from non-producing and remote low throughput natural gas components in the Marcellus region. Site audits were conducted at eleven locations and leaks were identified and quantified at seven locations including at a low throughput conventional gas and oil well, two out-of-service gathering compressors, a conventional natural gas well, a coalbed methane well, and two conventional and operating gathering compressors. No leaks were detected at the four remaining sites, all of which were coal bed methane wells. The total methane emissions rate from all sources measured was 5.3 ± 0.23 kg/hr, at a minimum.
HighlightsA UTV was outfitted with a methane quantification system to access remote sites.Natural gas audits were conducted at 11 remote sites – 7 had methane emissions.The minimum cumulative methane emissions rate was 5.3 ± 0.23 kg per hour.The average emissions from 5 coalbed methane wells was 1.9 g per hour.A non-leaking coalbed well was later found to be vented at a rate of 15.8 SCFM.
Methane emissions measurements of natural gas components using a utility terrain vehicle and portable methane quantification system
AbstractGreenhouse Gas (GHG) emissions are a growing problem in the United States (US). Methane (CH4) is a potent GHG produced by several stages of the natural gas sector. Current scrutiny focuses on the natural gas boom associated with unconventional shale gas; however, focus should still be given to conventional wells and outdated equipment. In an attempt to quantify these emissions, researchers modified an off-road utility terrain vehicle (UTV) to include a Full Flow Sampling system (FFS) for methane quantification. GHG emissions were measured from non-producing and remote low throughput natural gas components in the Marcellus region. Site audits were conducted at eleven locations and leaks were identified and quantified at seven locations including at a low throughput conventional gas and oil well, two out-of-service gathering compressors, a conventional natural gas well, a coalbed methane well, and two conventional and operating gathering compressors. No leaks were detected at the four remaining sites, all of which were coal bed methane wells. The total methane emissions rate from all sources measured was 5.3 ± 0.23 kg/hr, at a minimum.
HighlightsA UTV was outfitted with a methane quantification system to access remote sites.Natural gas audits were conducted at 11 remote sites – 7 had methane emissions.The minimum cumulative methane emissions rate was 5.3 ± 0.23 kg per hour.The average emissions from 5 coalbed methane wells was 1.9 g per hour.A non-leaking coalbed well was later found to be vented at a rate of 15.8 SCFM.
Methane emissions measurements of natural gas components using a utility terrain vehicle and portable methane quantification system
Johnson, Derek (author) / Heltzel, Robert (author)
Atmospheric Environment ; 144 ; 1-7
2016-08-23
7 pages
Article (Journal)
Electronic Resource
English
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