Oil and gas operators are always in need of handy, desk top tools for quick air emission calculations. In response to this need, Cimarron offers this valuable Excel spreadsheet for vent gas for free.
Field operations speak in terms of volume of gas in standard cubic feet (SCF) and environmental reporting needs mass amounts of air emissions. Conversion from volume of vented natural gas to mass is often needed by companies for internal communications and environmental reporting. Also, when sizing a vapor recovery unit (VRU), flare or vapor combustion unit (VCU), it is important to know the mass of air pollutants handled by these systems.
This Cimarron VOC Calculator can help you.
The spreadsheet can be used to calculate the mass (pounds and tons) of methane, volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) and greenhouse gases (GHGs) of a natural gas stream.
The inputs needed include volume of natural gas in standard cubic feet (SCF = 60°F and 14.7 psia) and the mole percent of the natural gas components.