That’s “operating”. That is, break even to keep pumping an existing well.
Wells deplete and dry up and must be re-drilled.
The needed price to replace wells is much more like $90, although the Permian Basin is lower.
Yes, I’ve seen graphics showing costs new and “operating” for various areas / regions.
I suppose we’d better concentrate on and open up more of the lower cost areas (offshore for some?). If the economy was roaring, and the US not going so heavily into debt, $90 oil might be sustainable. As it is, it’s gonna clonk this economy.