Development of a forced advection sampling technique (FAST) for quantification of methane emissions from orphaned wells
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| 出版年: | Atmospheric Measurement Techniques vol. 18, no. 13 (2025), p. 2987 |
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| 第一著者: | |
| その他の著者: | , , , , , , , , , |
| 出版事項: |
Copernicus GmbH
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| 主題: | |
| オンライン･アクセス: | Citation/Abstract Full Text Full Text - PDF |
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| 抄録: | Orphaned wells, meaning unplugged and non-producing wells lacking responsible owners, pose a significant and undersampled environmental challenge due to their vast number and unknown associated emissions. We propose, develop and test an alternative method for estimating emissions from orphaned wells using a forced advection sampling technique (FAST) that can overcome many of the limitations in current methods (cost, accuracy, safety). In contrast to existing ambient Gaussian plume methods, our approach uses a fan-generated flow to force advection between the emission source and a point methane (CH4) sensor. The fan flow field is characterized using a colocated sonic anemometer to measure the 3D wind profile generated by the fan. Using time-series measurements of CH4 concentration and wind, a simple estimate of the CH4 emission rate of the source can be inferred. The method was calibrated using outdoor controlled-release experiments and then tested on four orphaned wells in Lufkin, TX, and Osage County, OK. Our results suggest that the FAST method can provide a low-cost, portable, fast and safe alternative to existing methods with reasonable estimates of orphaned well emissions over a range of leak rates below 40 g h−1 and within certain geometric and atmospheric constraints. |
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| ISSN: | 1867-1381 1867-8548 |
| DOI: | 10.5194/amt-18-2987-2025 |
| ソース: | Advanced Technologies & Aerospace Database |