Closed testing · Android · Built for the rig floor

The all-in-one
mud engineering
toolkit.

Everything a mud engineer needs in the field — rheology, hydraulics, well capacity, kill sheets and unit conversion. 50+ calculators, fully offline, in your pocket.

50+
Calculators
100%
Offline
PDF·XLS
Report export
01 — TOOLKIT

Built around the mud report, not a generic form.

Every module speaks the language of the daily report — Fann readings, Pf/Mf, ECD, pit volumes — so logging in the field takes seconds, not spreadsheets.

⚗️

Rheology Lab

PV, YP, gel strength, Power Law index & consistency from your Fann readings — with a live rheogram.

💧

Hydraulics & ECD

Annular velocity, hydrostatic pressure and ECD, calculated the way you run them on the rig.

📐

Well Geometry & Capacity

Full wellbore profile — casing, liner, open hole, drill string — with accurate volume & stroke figures.

⚖️

Mixing & Weight

Fluid mixture formulas, barite loading and mud weight adjustments without the back-of-envelope math.

🧂

Salt & Brines

Salinity weight %, NaCl load and final density for brine and salt-saturated systems.

⚠️

Contamination WBM/OBM

Diagnose carbonate, bicarbonate and other contamination from your titrations — flagged automatically.

🧱

Solids Analysis

LGS, CaCO₃, HGS, ASGS and more — full solids breakdown from routine measurements.

🎯

Specialized Calculators

Balanced plug, heavy pill / slug spotting and other advanced jobs, driven by your real well profile.

🔁

Field Converter

Frictionless conversion across ppg, SG, psi, bar, bbl, m³ and every unit the field actually uses.

02 — WELL CONTROL

Kill sheet.
Calculated. Exported. Done.

Built-in wait & weight method with pre-recorded well data, formation strength & MAASP, kill fluid density and a full circulating plan — then exported as a standard kill sheet in one tap.

  • Pre-recorded well data, kick data and circulating plan in one flow
  • MAASP, ICP, FCP and stroke-pressure schedule calculated live
  • Exports in your app units — field or metric, automatically
PDF EXCEL Works offline
Offline & FastWorks without internet, anywhere
Accurate ResultsTrusted formulas & industry standards
Field ProvenBuilt for real rig operations
Export & SharePDF & Excel reports in one tap
03 — CLOSED TESTING

Three steps, on your phone, on the rig.

MudFlow is free during closed testing. Feedback from real wells shapes what ships next.

1

Opt in on Google Play

Join the MudFlow closed testing group with the Google account you use on your Android device.

2

Install the early access build

Once opted in, install MudFlow (Early Access) from the Play Store like any other app.

3

Log real readings, send feedback

Use it on an actual well if you can — then leave feedback from the app listing so it reaches the developer.

Ready to put it on the rig floor?

Know your mud — before it costs you the well.

Join MudFlow closed testing →