Operations and Maint Session: Online Analysis of Butane and Vapor-Pressure

  • Session: Operations and Maintenance
  • Tuesday, September 11, 2018
  • 2:00 pm - 2:30 pm

Online Analysis of Butane and Vapor-Pressure:  How online analysis allows for tighter control of butane blending into crude oil and diluted bitumen to reduce viscosity for pipeline transportation.

This presentation will discuss new online analytical instrumentation being used for Butane blending into crude oil.  The technology is based on Near Infrared (NIR) Spectroscopy to pass laser generated NIR light through a small sample of crude oil that flows continuously through the analyzer cell.  The light absorbance from hydrocarbon molecules can be analyzed to produce an online measurement of Butane (C4s) in crude oil with updates results every 15 seconds.  This technology is gaining widespread acceptance for Midstream processing applications like C4 analysis in Condensate, NGL analysis from fractionation tower bottoms and C4s in condensate stabilizers.  It has also been applied for Butane blending into Crude oil with densities up to 880 KG/M3.  Because of the speed of analysis blending to a tight C4 setpoint is possible with online analysis.  Once the technology has proven itself in crude oil applications with densities approaching 900 KG/M3 the groundwork will be laif to apply it in heavier densities up to 940-950 KG/M3.