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Autonomous Remote Gas Detection Using Optical Imaging Technology

  • Type:
    Conference Presentation
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    April 27, 2015
  • Duration:
    30 minutes
  • Skill Level:
  • PDHs:

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ExxonMobil Research Qatar has partnered with a U.S. based firm, Providence Photonics, to develop a Remote Gas Detection (IntelliRedTM) technology that integrates computer vision algorithms and infrared (IR) optical technology to achieve autonomous detection of hydrocarbon plumes. The IntelliRedTM system is designed to provide early warning to operations personnel in case of gas releases and to detect fugitive gas emissions but could also have application to monitoring critical pieces of equipment for abnormal temperatures and to assist in plant security by monitoring fence lines for intruders.

The IntelliRedTM system utilizes an IR camera and integrated cooler assembly, paired with a computer vision algorithm that analyses the video output from the IR imager to determine the presence of hydrocarbon plumes. Most hydrocarbon plumes have strong absorption peaks in a narrow mid-wave IR region. The algorithm takes advantage of the difference in contrast between a hydrocarbon plume and the background in each pixel of an IR image and the temporal changes due to plume behavior for the analysis. The algorithm compares sequentially collected IR images and uses a multi-stage confirmation process to confirm the detection and has multiple filters that mitigate interferences like steam, and other moving objects such as humans and trees.

The IntelliRedTM camera assembly enclosure has obtained explosion proof certification using the ATEX standard to allow for deployment at classified/hazardous areas in oil and gas processing facilities. Instrument air is used to purge the system. Multiple deployment opportunities at process facilities are currently underway. Results from field testing at these process facilities will help researchers investigate the effect of temperate and harsh weather conditions, the effect of varying temperatures and gain a better understanding of equipment wear and tear and maintenance requirements.

Work has also been undertaken to compare the performance of the IntelliRedTM system versus existing detection technologies, most commonly point and path detects.  Existing technologies require dispersed gas to physically contact the point sensors or move between the source and sensor of a path detector while the IntelliRedTM system can detect hydrocarbon plumes remotely. Field testing shows that the IntelliRedTM system can provide early leak detection as compared to traditional technologies. The results of these comparisons will be presented.

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