RE:At current Oil prices in cdn dollars 58$Unfortunately isn't quite that simple.
Surge tracks Canadian light sweet, which for the first 8 months of 2015 averaged $59.35 CAD, compared to WTI which for the first months of 2015 averaged about $64.62 CAD. There's a discount applied against Canadian oil (larger transportation costs, etc by shippers, as well as stigma).
The estimates for that discount against Canadian oil appears to stay around that $5 range for the rest of 2015, so instead of the $58/bbl CAD we're onyl seeing about $53/bbl.