Point Sensor Networks Struggle to Detect and Quantify Short Controlled Releases at Oil and Gas Sites

14 February 2024, Version 2
This content is a preprint and has not undergone peer review at the time of posting.


This study evaluated multiple commercially available continuous monitoring (CM) point sensor network (PSN) solutions under single-blind controlled release testing conducted at operational upstream and midstream oil and natural gas (O&G) sites. During releases, PSNs reported site-level emission rate estimates of 0 kg/h between 38-86% of the time. When non-zero site-level emission rate estimates were provided, no linear correlation between release rate and reported emission rate estimate was observed. The average, aggregated across all PSN solutions during releases, shows 5% of mixing ratio readings at downwind sensors were greater than the site's baseline plus two standard deviations. Four of six total PSN solutions tested during this field campaign provided site-level emission rate estimates with the site average relative error ranging from -100% to 24% for solution D, -100% to -43% for solution E, -25% for solution F (solution F was only at one site), and -99% to 430% for solution G, with an overall average of -29% across all sites and solutions. Of all the individual site-level emission rate estimates, only 11% were within +/- 2.5 kg/h of the study team's best estimate of site-level emissions at the time of the releases.


emissions abatement
continuous monitoring
emissions quantification
oil and gas
Green House Gas

Supplementary materials

Point Sensor Networks Struggle to Detect and Quantify Short Controlled Releases at Oil and Gas Sites - Supplementary Information
The document contains relevant additional and supplementary information that was not captured nor discussed in the main paper.


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