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Created by HEAT ©2017

Gas & Oil

EDAR can measure absolute amounts of methane leaks from natural gas wells.

EPA’s Air Rules for the Oil & Natural Gas Industry have new requirements for processes and equipment at natural gas well sites.  Equipment and processes at the well site may be covered by requirements under the New Source Performance Standards (NSPS) for volatile organic compounds (VOCs), and the National Emissions Standard for Hazardous Air Pollutants (NESHAP) for oil and natural gas production.

The path from the wellhead to the transmission line has many gas-driven controllers and actuators.  Natural gas must be treated before it is inserted in the transmission pipeline, such as dehydration.  This takes many valves, fittings and connections.

EDAR can detect and quantify methane leaks from wellheads.  EDAR can be equipped with a large aperture scan head.  Instead of scanning back and forth, it can create any pattern. Methane gas exiting the cone can be detected and quantified using the same techniques in car exhaust remote sensing. Wind speed can be calculated using a local weather station or wind Lidar.  Once the wind velocity is established flow rate can be calculated and leaks can be quantified in units of amounts per time, e.g. ft3/hour.

Since EDAR can measure the amount of methane at any one time, it can also measure the rate at which the methane is crossing the barrier of the laser scan by just measuring the wind velocity. 

EDAR's Adaptability

The nature of EDAR's technology eliminates the need for any calibration.  EDAR’s patented technology uses similar principals as active satellite remote sensing platforms.  It can remotely measure quantities and relative amounts of targeted molecules in a plume.  Due to the absolute nature of the measurement, calibration is not necessary.  This gives our data more accuracy, precision, consistency and allows for minimal human operational intervention

Customizable Scan Head

EDAR can scan in 2 dimensions creating any pattern using an XY scan head. EDAR uses a variation of DIAL to measure and quantify atmospheric gases independent of temperature and pressure.

Options for EDAR Applications in Gas and Oil:

 

  • Fence line Monitoring – around the clock remote detection and quantification of emissions in real-time.

  • Mobile Mounted Monitoring – vehicle mounted with an EDAR system on a pole to locate, detect, and quantify leaks.

  • Monitoring of Wellhead – detect and quantify leaks at the source as well as around connections, fittings, and valves.

Gas & Oil Industry:

A Comparison

A few examples of FTIR limitations include:

  • IR cameras cannot see or measure gas if it is the same temperature as the surroundings.

  • Passive FTIR systems need the plume to be at relatively high temperatures and they cannot image the plume.

  • SOS FTIR systems depend on the Sun’s position to measure column amounts, but they cannot use the most sensitive methane absorption features because ambient amounts remove the Sun’s light at those wavelengths.

 

In comparison, EDAR’s unique approaches include:

  • EDAR can scan up and down and side to side in order to do fence line monitoring.

  • EDAR can be equipped with a Lower Explosive Limit (LEL) meter in the boxes and can go into immediate shutdown if necessary.

  • EDAR can be attached to existing infrastructures inside a refinery. For instance, it can sweep out a “tent” of laser light. Any fugitive emissions from underneath the “tent” could then be quantified.