Ann: Oil Discovery at Windmill 1 , page-5

You are absolutely right John, going from the reports its initial potential is seen as small, but I did a little checking regarding the depth/length of the oil find and (only going off that) it could be bigger, going from past BPT finds- ie. Rincon-1

Anyway, I was going to use a smaller number, but was having a good look at the old Rincon-1 find which hit 4.5 meters of pay and looked to have a field size of over 500k. So I just extrapolated a bit, plus, the mention of the Birkhead formation and drill stem test (which is basically just a cheap way to test the possible formation) could possibly mean they have hit another source, therefore a greater overall resource.

All pure speculation on my part (I don't do it very much which I realize is ironic considering my name)
haha.