Project Economics & Monte Carlo Valuator
Upstream NPV under uncertainty Interactive demo tool
▮ Project
§ Fiscal & Discounting
Base Case Valuation — deterministic, updates live
NPV @ base
—
MM$ (post-tax)
IRR
—
post-tax, real terms
Recoverable
—
MMbbl total
Gov’t take
—
of project value
Peak rate
—
Payback
—
Gross revenue
—
Undisc. cashflow
—
▤ Production & Cashflow Profile
Uncertainty Ranges
Define each driver’s Low and High case as a % change from the base value above. The base value is treated as the P50 (median), Low as the P10 and High as the P90, sampled from a lognormal (asymmetric ranges create realistic skew). Every included driver is sampled independently and the full economic model is re-run each iteration.
Value Driver Low % High % Low → High value
🎲
Run the simulation to see the NPV probability distribution
S-curve · histogram · tornado sensitivity — all built from your base case above.
Monte Carlo Results — NPV Distribution
P10 — Low
—
MM$
P50 — MC NPV
—
MM$ · median
P90 — High
—
MM$
Expected NPV
—
MM$ · E[NPV], MC mean
Prob. NPV > 0
—
chance of profit
📈 NPV S-Curve — Cumulative Probability
📊 NPV Distribution — Histogram
🌪️ Tornado — NPV Sensitivity (each driver Low ↔ High, others at base)

Want this tailored to your asset?

This is a simplified single-product screening model. Enerquill Advisory builds bespoke, auditable economic & risk models around your fields, fiscal terms and portfolio.

  • PSC, service & sliding-scale fiscal regimes
  • Multi-product & portfolio roll-up
  • Correlated risks & custom price decks
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  • Live Excel model & branded reporting