crudecode 0.1.0a1 valuation: Example: four-well working-interest package (synthetic)
4 well(s), working interest; effective 2026-09-30; cashflow month 1 = 2026-10, horizon 360 months
prices: flat oil $70/bbl, gas $3.5/MMBtu (diffs 0 / 0); tax 7.5%, GPT 5%

NPV (each bucket discounted at its own rate)
  PDP   15.0%     2 well(s)        $5,811,793
  DUC   20.0%     1 well(s)         -$818,759
  PUD   25.0%     1 well(s)         -$705,131
  Total                               $4,287,903
undiscounted net cashflow over the horizon: $15,826,192

wrote: out/wells_monthly.csv (1440 rows), out/parameters.csv, out/README.md
