It seems that most North American Shale oil producers are just breaking-even between $75 and $85, so this would still mean to say that there are a lot of companies heavily in debt without a chance to become profitable soon
I think those prices are from the high price days when more marginal areas were worthwhile to produce. When a company only goes after the sweetspots in the plays, the average price comes way down.
At least 4 counties, the main areas for new oil wells in the Bakken, were having a breakeven cost at or below $37.
Dunn $29
McKenzie $30
Williams $36
Stark $37
https://www.dmr.nd.gov/oilgas/presentations/FullHouseAppropriations010815.pdf
Page 7
That was to drill a new well. For wells already in operations producing oil, the average is $15 a barrel before they operating cost would match selling price.