Free diagnostics
Working tools, not a demo. They run in your browser: the numbers you paste are not sent anywhere, and there is no account, trial timer, or watermark on the answer. Use them on a real test today and judge us on whether the answer holds up.
Field-pace pad & stage calculator
Plan the pad before the crew arrives: stage slurry volume and pump time, the real cycle time between stages, pumping days, water and sand hauled, and whether the perforations hold a limited-entry split at your rate.
Type wells, stages, clusters, perfs, rate and loading. Answers update as you type.
DFIT & step-down interpreter
Classify the pre-closure regime from a shut-in pressure decline, and split the step-down pressure drop into perforation friction and near-wellbore tortuosity — with the exponent sensitivity shown rather than hidden.
Paste time vs bottomhole pressure, or rate vs pressure drop.
Fracture growth calculator
See how big a penny-shaped fracture grows over an injection, with and without water lost into the rock, and when it reaches each of your sensors.
Rate, time, rock stiffness, viscosity, leak-off, sensor distances.
Log auto-tune
Drop in a log or lab CSV, map the columns, and fit the temperature trend and pressure calibration points. Bad rows are named and dropped, never filled in.
Paste or upload a CSV; column mapping is suggested for you.
Engineering calculators
Textbook field-unit calculators with the equation, source and assumptions printed under each answer.
The same rules as the paid product
If the data cannot support an answer, these tools say so instead of printing a confident-looking number. Where a result depends on an assumed exponent or a fitted trend, you see the assumption and the spread it causes.
Every tool on this page exports a Verified Design Record: one file with your inputs, each result marked solved or estimate, the residual, every refusal, and a fingerprint. Anyone can check it at /verify without an account.
The full platform — design, sweeps, pad studies, records — is private and opens by request.