Thank you guys for these post/comments!

I just continue to be baffled by the numbers coming out of these posts. Besides of the mystic 0.07, now that equal K for the big and smaller fields.

The equal K must be a symptom of a fractal phenomenon. The smaller fields behave just like the big ones!

Had we field by field data for KSA, we could get a pretty good idea of what the production of smaller fields will look like.

All in all I think KSA will yield a future production graph over time like that of the UK, with a primary peak followed by a second. In the UK this was due to two separate discovery cycles; in KSA this will be due to two development cycles.

The result - KSA peaked in 1980 and that's it.

You're right, the fact that the two logistic curves have the same shape is surprising. I still don't know exactly what to think of it yet!
i DON'T find it the least bit surprising.

Why not?

See my comments on figuring telescope mirrors elsewhere.