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Related Concept Videos

Multiple Pipe Systems01:21

Multiple Pipe Systems

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Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
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Summary

Continuous monitoring systems (CMS) show similar aggregated emission rates despite differing short-term data. Quantification algorithms, not sensor platforms, drive emission rate differences, impacting oil and gas site emission inventories.

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Area of Science:

  • Environmental Science
  • Atmospheric Chemistry
  • Oil and Gas Industry Emissions

Background:

  • Continuous monitoring systems (CMS) are increasingly used for quantifying emissions from oil and gas operations.
  • Evaluating the performance and comparability of different CMS technologies in real-world field conditions is crucial.
  • Understanding discrepancies between sensor platforms and quantification algorithms is key to accurate emission reporting.

Purpose of the Study:

  • To compare the performance of three different continuous monitoring systems (CMS) from various vendors.
  • To assess the agreement between CMS data, aerial measurements, and bottom-up inventories.
  • To differentiate the impact of sensor platforms versus quantification algorithms on emission estimates.

Main Methods:

  • Field deployment of three CMS vendors across six Appalachian Basin oil and gas sites.
  • Collection of several months of continuous concentration data.
  • Comparison of CMS-derived emission rates with concurrent aerial measurements and site-level inventories.
  • Evaluation of vendor-provided estimates against an open-source quantification algorithm.

Main Results:

  • CMS localization and quantification estimates showed limited agreement on short timescales (30 min).
  • Temporally aggregated emission rate distributions were similar across CMS solutions.
  • Differences in emission rates were primarily attributed to quantification algorithms, not sensor platforms.
  • Agreement between CMS and aerial estimates improved when CMS data were averaged across solutions.
  • Similar sites with comparable bottom-up inventories exhibited dissimilar emission characteristics.

Conclusions:

  • CMS technologies show promise for emission monitoring, but quantification algorithms significantly influence results.
  • Averaging CMS data across different solutions can improve agreement with aerial measurements.
  • Site-level emission characteristics can be highly variable, even for sites with similar inventories.
  • Findings inform the development of measurement-informed inventories and emission mitigation strategies for the oil and gas sector.