@WonkersI have only read through your calculations quickly, but so far I have noticed an error in your conversion factor
1 mscf gas should be equivalent to 1.055 GJ
Secondly, there's no discount factor to allow for the time value of money....apply an approximate multiplier if 33% may provide a more realistic estimate in today's money.
Third observation is gas condensate fields should have a recovery factor in the range 70 - 80%, and possibly at worst 50 -60%. However dividing 60% by 3 should come to a realistic result (your 20%) provided the Tscf to GJ conversion is amended.
In addition, possibly a low case recovery factor for the oil within the OMA extensive Canyon sand could be set at 20%?
(20min delay)