[thackney]

usually takes more energy (hot water) to heat the stuff up and get it moving than is economically justified

Not the same stuff.

The Bakken Formation is an overpressured, often oil-wet, formation with 41 degree API gravity crude oil resident in its natural fractures that is capable of producing at high production rates.

[kinghorse]

still takes something pressurized to get it moving. that’s the big problem I presume.