1) Make a production forecast which is a prediction of the amounts
of future production of oil, gas, NGL, etc. from the property projected over
time.
2) Perform a discounted
cash flow analysis of those expected production streams. That is, determine
the present value of the net dollars that will be generated in the future from
the production and sale of the forecasted amounts of oil and gas less the
operating expenses, royalties, and taxes incurred as the production streams
are produced. The resulting cash flow stream is discounted to a reference
date.