RE:RE:RE:you guys are super smart and are invested in a great companyDuxing you are correct that SCO is not a good diluent (although any hydrocarbon liquid csn be used). The objective of blending is lower the density of 8 API bitumen ( density of 1.05) by blending with a lighter hydrocarbon to meet pipeline specifacations ( density of 0.92 with an API gravity of 22) so the dilbit can flow in the pipe. The lower the density of diluent (ie the higher the API gravity, condensate 0.77 and API 50) the less diluent is required. Converserly the higher the density of the diluent (ie SCO at 30 API and 0.87 density) the more is needed to get to pipeline spec.
It takes 0.35 bbl of Condy with one bbl of bitumen to meet pipeline spec. It takes 0.59 bbl of SCO with one bbl of bitumen.
To illlustrate this on a 25,000 bpd project, you need 8,750 bbls of condy and 14,750 bbls of SCO. That's why Condy is more valuable.