⭐ Launch offer — $999 your first year · limited time

Screen a prospect in minutes, not a morning.

PetroCalc runs volumetrics, decline curves, PVT, full-cycle economics, risking, and Monte Carlo in one browser tab — with math benchmarked against PHDWin, ARIES, and Ryder Scott RyVOL.

Free tier, no credit card. Built by a working petroleum engineer.
petrocalc — Wolfcamp A · Permian
$8.74MM
NPV (pre-tax)
38%
IRR
20.4%
Pg (COS)
695 MBO
Recoverable
The problem

A teaser hits your desk. You need an answer by lunch.

Today that means jumping between PHDWin, ARIES, three spreadsheets, and a PVT correlation you half-remember. Spreadsheets don't have validated correlations or a real risking framework. PetroCalc puts the whole screening workflow in one place — and the numbers hold up.

What's inside

The whole screening workflow, one tab

No installs, no IT ticket, no $15K license.

Volumetrics & PVT

OOIP / OGIP, NTG, saturation-pressure analysis, full PVT tables with separator correction.

Decline Curves

Arps with transient plateau / BDF, EUR, and a clean rate-vs-time forecast.

$

Economics

Monthly cashflow, NPV, IRR, payout, WI/NRI, severance & ad-valorem tax, IDC — SPE mid-period discounting.

Risking

Rose & Associates COS — Pg, EMV, and a sensitivity tornado.

Monte Carlo

Probabilistic volumetrics with P90 / P50 / P10 and full distributions.

📋

Portfolio & Exports

Save and compare prospects across devices. Export a polished PDF or PowerPoint in one click.

Built to share. Turn any prospect into a clean, presentation-ready PDF or PowerPoint in one click — to sell a prospect, pitch a farm-in or deal, or take it to management. Decline curve, risk radar, economics, and recoverables, deal-ready.
Why you can trust the numbers

The math is real, not approximated.

Every correlation is the published industry standard, validated against Ryder Scott RyVOL, PHDWin, and ARIES as ground truth — and locked down by an automated test suite so it stays that way.

1,439
Automated tests
<0.12%
Z-factor error vs RS
8
Modules, one tab
  • Z-factor Hall-Yarborough '74
  • Solution GOR / Bo Standing '47
  • Separator correction Vazquez-Beggs '80
  • Viscosity Beggs-Robinson '75
  • Sour gas Wichert-Aziz '72
  • Risking Rose & Associates
Pricing

Start free. Go Pro when it's paying for itself.

One prospect evaluation saved pays for the year.

Free
$0
  • Volumetrics, Decline Curves, PVT
  • Cloud-synced portfolio (with a free account)
  • Runs in any browser, no install
Start free
MOST POPULAR
Pro
$1,599/yr · or $199/mo
  • Everything in Free, plus:
  • Full Economics — NPV, IRR, payout, tax
  • Risking, Monte Carlo, Well Log
  • One-click PDF & PowerPoint — sell a prospect or present to management
Go Pro
Launch offer: $999 your first year — limited time. Renews at $1,599/yr. Or pay monthly at $199/mo.

Put it on a real prospect.

Free to try, no credit card. See if the numbers match your references.

Start free