Klebb 1, page-27

I'm back home now so back into it...

There are still a few unknowns for me for Klebb that affect the model results quite significantly but putting in my best guess, I think K1 VuL is capable of about 300 Mscfd max gas rate from here. That's keeping in mind that the seam is already fairly depleted, STX said it was at about 1200 psia.

Co-mingling VuU and VuL now requires a two-layer model, which I haven't made yet. But I think VuU would add another 200 Mscfd or so.

A new vertical well, accessing all three seams, with a clean frac and no skin damage from the jet pumps, could potentially reach somewhere in the range of 800-1000 Mscfd IMO, assuming average reservoir permeability of 2.5 mD. But that is unlikely to be economic, particularly with the CO2 content here, which is why the horizontal development is required. Vertical fracs just can't access enough drainage area for economic rates, and the sharp drawdown means stress-sensitive permeability effects are severe.

Horizontals are the game changer.