My estimate is slightly higher as I've used 70% GS & 265 FVF for Kingia. For W/SST, FVF around 310, 70% GS & minimum CO2 (under 1%).
I noticed the Higher pressure (~7500 psia) in the WSST vs 6800 psia in the Kingia & IMHO it could b due to the 'Hydrocarbon Column effect', ie something to do with fault/seal trap & associated Burial & Diagensis at that time in the deeper part of Dandaragan Trough. Not sure what the company's hypothesis is for the Pressure, but I think it should b along these lines.
Overall the figures r close enough, give or take a few Bcf's. Not sure how much they've factored in as the net gas-pay thickness for the Crestal location for both Formations ? I guess for now we can live with 16 & 14m respectively.
Ann: South Erregulla Success Unlocks Project Haber, page-129
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