What is Medium Sour Blend crude?

Medium Sour Blend is a mixture of all light and medium sour feeders that were formerly shipped as Sour Low Edmonton, Sour High Edmonton, and Mixed Sour Blend. Feeders are pooled in Superior and undergo an equalization process.

Enbridge Pooled Crude Quality Specification

Pooled crudes at Superior are subject to quality specifications set by Enbridge. Test methods employed, typical results, testing frequency, and mitigation/penalty details can be found from the most recent document available here. Contact Enbridge Pipelines directly for additional information regarding pooled crude quality requirements.

Light Ends Summary

Property (vol%)Most Recent Sample6 Month Average1 Year Average5 Year Average
C3- 0.42 0.50 0.42 0.38
Butanes 4.46 4.77 4.38 3.83
Pentanes 6.57 5.93 5.34 4.06
Hexanes 6.78 7.28 6.18 5.72
Heptanes 6.83 7.51 7.46 6.39
Octanes 4.82 5.69 4.78 5.61
Nonanes 3.33 3.97 3.43 3.98
Decanes - - - 2.13

BTEX

Property (vol%)Most Recent Sample6 Month Average1 Year Average5 Year Average
Benzene 0.27 0.30 0.28 0.35
Toluene 0.80 0.91 0.82 0.79
Ethyl Benzene 0.18 0.21 0.19 0.27
Xylenes 0.96 1.11 0.99 0.84

Distillation

TBP ASTM D2892 & D5236
HTSD ASTM D7169

Export Medium Sour Blend Data

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Most Recent Sample Comments:
MSB-605, Nov 16, 2017

Last 6 Samples

Density and MCR were reduced while pentanes and hexanes were elevated in the November sample of Medium Sour Blend. Typical merged simulated distillation results are included.

Basic Analysis

PropertyMost Recent Sample6 Month Average1 Year Average5 Year Average
Density (kg/m3) 834.3 838.4 842.3 852.1
Gravity (oAPI) 37.9 37.1 36.3 34.5
Sulphur (wt%) 1.32 1.34 1.43 1.61
MCR (wt%) 3.10 3.20 3.62 4.19
Sediment (ppmw) 317 316 281 273
TAN (mgKOH/g) 0.29 0.49 0.51 0.40
Salt (ptb) 4.2 9.3 12.2 24.3
Nickel (mg/L) 14.3 12.1 13.8 17.0
Vanadium (mg/L) 34.2 29.4 33.5 39.8
Olefins (wt%) - ND ND ND

*ND indicates a tested value below the instrument threshold.
1 Reference temperatures can be found here

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