University of Colorado at Boulder
BMP of Oil and Gas Development

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BMP ID: 4955
Title: Install VRUs on Crude-Oil and Condensate Storage Tanks.
Text: Table 1â€"Cost-Effective Options for Reducing Methane Emissions: "Install VRUs on Crude-Oil and Condensate Storage Tanks. Transferring crude oil and condensate from the low-pressure separator to an atmospheric storage tank results in vaporization and venting of light hydrocarbons, including significant amounts of methane, to the atmosphere. Furthermore, during storage, more light hydrocarbons evaporate from the oil and vent with working and standing losses. Oil tank emissions are the second largest source of production-sector methane emissions. VRUs are relatively simple systems that can capture approximately 95% of the Btu-rich vapors for sale or for on-site fuel. With electrical power available at a site, a conventional rotary compressor VRU can be cost-effective. Without electrical power, and with a high-pressure compressor with spare capacity, an 'ejector vapor recovery unit' can be cost-effective and more reliable, having no moving parts." [see Table 2 and 3 in source document for costs, benefits and production characteristics]
Source Publication Name: Cost-effective methane emissions reductions for small and midsize natural gas producers
Citation Section: Table 1
Citation Page: 4
Supplemental Documents:  
Usage Type: Recommended
Timing: • Production / Operation / Maintenance
Oil / Gas Field:  
Surface Ownership: • Federal
• State
• Private
Mineral Ownership: • Federal
• State
• Private
Primary Contact: Environmental Protection Agency
Ariel Rios Building, 1200 Pennsylvania Avenue, N.W.
Washington, DC  20460  United States
Phone:(202) 272-0167     Alt. Phone:(202) 272-0165
Fax:     E-mail: 
Alternate Contact:  
 
Categories: Air Quality and Emissions
Location: General / Federal
Species:
Vegetation Types:
General Comments:
Cost-Benefit Analysis: Cost & Benefits: Equipment Cost= $26,500; O&M Cost = $5,000; Saleable Gas Saving (Mcf/d) = 12; Expected Payback = One and a half year with price assumptin $5/Mcf; Operating Requirement= Electrical power supply for VRU compressor; Basis for cost saving= Installing one 25 Mcfd VRU on crude oil or condensate storage tank(s); Other Benefits= Reduced VOC and HAP emmissions.
BMP Efficacy:
Date Entered: 2009-04-20 08:57 UTC
Last Updated: 2011-07-17 13:50 UTC