236 Oil and Gas Property Evaluation 5-20. You own a 27% working interest and a 21.6% net revenue interest in Lease "A". The current oil price is $108/bbl. If the 5-22. Yo severance and ad- valorem tax rate is 8%, Au and the gross monthly operating costs are sh $9,000: ye a) What is the rate at the economic limit in bopd? (See Chapter 1 or Chapter 8 for economic limit calculation) b) What must the price of oil be if the economic limit is 2 bopd