Method for mapping a natural gas leak

Patent · 03 February 2009

OSTI ID:988359

Reichardt, Thomas A ^[1]; Luong, Amy Khai ^[2]; Kulp, Thomas J ^[1]; Devdas, Sanjay ^[3]

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1. Livermore, CA
2. Dublin, CA
3. Albany, CA

A system is described that is suitable for use in determining the location of leaks of gases having a background concentration. The system is a point-wise backscatter absorption gas measurement system that measures absorption and distance to each point of an image. The absorption measurement provides an indication of the total amount of a gas of interest, and the distance provides an estimate of the background concentration of gas. The distance is measured from the time-of-flight of laser pulse that is generated along with the absorption measurement light. The measurements are formatted into an image of the presence of gas in excess of the background. Alternatively, an image of the scene is superimposed on the image of the gas to aid in locating leaks. By further modeling excess gas as a plume having a known concentration profile, the present system provides an estimate of the maximum concentration of the gas of interest.

• Research Organization: Sandia Corporation (Livermore, CA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Livermore, CA)
• Patent Number(s): 7,486,399
• Application Number: 12/012,670
• OSTI ID: 988359
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS