dont forget , page-16

Page 2 of the Mercury reports NPVs have been calculated using standard oil industry discounted cash flow analysis with the following assumptions:
• Oil price - low, base and high Brent prices of $50/bbl, $60/bbl and $70/bbl have been used an upside price of $90/bbl is also included. Prices have been maintained flat and a notional discount to Brent of 3% has been applied based on the average crude quality from neighboring producing fields.

These calculations were also based on reserve estimates of
330- 1.4MMbbl
430- 5.4MMbbl

But i am betting that everyone who posts on HC ERH thread have read the Mercury report and this is old news.