when will the selling end, page-5

haven't found exactly what I was looking for but the following goes a long way to underpin my previous post...

"Oil is currently being sold at a discount to the WTI, partly due to the existing contract based on Wichian Buri
crude, which is of lower quality, and also due to the wax component of the oil. Pricing is currently being renegotiated.
We estimate the discount to be around 15% to the WTI.
Well costs are assumed to be US$0.8m per well, with ongoing opex averaging USD$5 per bbl. The trucking
cost component is an additional US$2.70 per bbl.
We estimate decay rates at 25% for the first year, and then 20% per year thereafter. POE-9 has been producing
for over 15 months and has averaged a 12% decline p.a. so we consider our assumptions to be appropriately
conservative.
The Thai III fiscal regime charges royalties on a sliding scale dependant on production rates with less than
2,000bopd charged at 5% of revenue, up to 12.5% at 20,000bopd. A Special Remuneratory Benefit (“SRB”) is
Hartleys Limited Specialist Equities Research 29 April 2008
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also payable at high revenue levels, based on cumulative drilling metres and revenue adjusted for inflation and
exchange rate, by block. SRB peaks at ~60% in our model on flow rates of ~20,000bopd and US$90 oil price.
The Thai tax rate on profits is 50%. A double taxation agreement means that no tax will be paid in Australia."