The marginal cost to produce a barrel is quite stable. The distribution of the all-in supply cost might be a better choice, which is perhaps what you meant. With most wells producing oil, gas, NGL and condensate, that is a bit complex except for companies like MEG and Rubellite which are almost 100% oil, although MEG's cost are affected by the natural gas it uses to create steam and the costs of c5's it buys to use as diluent.
I would be even more interested to see the mean distribution of the marginal cost to produce per barrel overlaid the distribution of oil prices.
The marginal cost to produce a barrel is quite stable. The distribution of the all-in supply cost might be a better choice, which is perhaps what you meant. With most wells producing oil, gas, NGL and condensate, that is a bit complex except for companies like MEG and Rubellite which are almost 100% oil, although MEG's cost are affected by the natural gas it uses to create steam and the costs of c5's it buys to use as diluent.