TOC of typical source rock is 1% or less.
The Williston Basin Bakken has a TOC of 11%.
There is a Bakken that has a TOC of 17%.
Routine core analysis has been completed on four of the six wells to-date. Porosity up to 10.4% and non-fractured permeability up to 0.3mD (millidarcy) have been reported. Geochemical analyses have been completed on select samples with additional analysis in progress. Sample analyses indicate a thermally mature Bakken System source rock in the oil window, with some zones where TOC (total organic content) reaches up to 17%.And where would that Bakken be, you ask?
The Southern Alberta Basin Bakken Fairway in NW Montana.
I posted this link some time ago, but had not paid attention to this particular story until Don sent it to me a few minutes ago. Thank you.