BAKKEN SHALE: Biggest drag on oil play's potential? Drugs Published: Monday, February 10, 2014 An investment strategist thinks it is the rampant drug trade that is most holding back development in the Bakken Shale. Please subscribe to EnergyWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.