"Heavy oil development technology that provide higher recovery factors (SAGD) tend to have the greatest environmental impact and consume the most energy."
https://ecpamericas.org/assets/Site_18/files/Initiatives/HOWG/ENG%202.10%20HOWG%20Guest%20Speaker-Arthur_D_Little_Canadian_Heavy_Oil_Forum.pdf
Bitumen production from FCCL is the past. Sorry Alex.