How does the free month work?
Create an account and the full platform unlocks for one calendar month. Nothing is charged until the trial ends, and you can cancel before then.
Drilling & mud engineering calculations
51 drilling calculators.
One login. Built for the rig floor.
ECD, kill sheets, hole cleaning, volumes and more. Verified against reference workbooks, readable on your phone, imperial or metric.
Built for mud engineers, drilling engineers and well-site supervisors.
No charge until the trial ends · cancel any time
One plan, everything included
CAD 14.99/month
First month free — you are not charged until it ends.
Billed in Canadian dollars (CAD).
- Every calculator in the platform — hydraulics, volumes and capacities, well pressure and control, drilling-fluid formulas, drillstring mechanics, cementing and directional work.
- Imperial and metric throughout, so you can switch unit systems mid-job without re-entering values.
- Jobs, running history and favourites, so the well setup you typed this morning is still there tomorrow.
- A calculation engine locked by an automated regression suite built on authoritative reference workbook cases.
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51
calculators
6
disciplines
2
unit systems
1
subscription
See it in use
Real screens, real numbers
These are the calculators themselves — not mock-ups. Each one leads with a summary result, then shows the full breakdown underneath so you can check the working.
Built for the rig floor
Works on the phone in your pocket
Readable at 320 px on a phone or full width on a desktop, with the headline result first and the detail underneath. Add ProMud to your home screen and it opens like any other app — no browser chrome, no re-typing your well setup.
Browse all drilling calculators →What your subscription covers
Six disciplines, 51 calculators
- Hydraulics10
- Volumes & capacities8
- Well pressure & control15
- Drilling-fluid formulas12
- Drillstring mechanics4
- Cementing & directional2
Every calculator is listed by name and purpose in the public catalog — review the full set before you sign up.
Before you sign up
Common questions
What does it cost after the trial?
CAD 14.99 per month, one account, every calculator included. Manage or cancel from your account at any time.
Can I work in metric and imperial?
Yes. Every input and output converts through a single unit engine, and you can change systems while a calculation is open.
Do I have to upload anything?
No. You type values and results appear immediately in the browser — there is no upload step before a calculation runs.
How accurate are the calculators?
The calculation engine is locked by an automated regression suite built on authoritative reference workbook cases, and every tool is verified against reference cases before it ships. Always confirm results against your well control procedures and rig-specific kill sheet.
Is my well data private?
You type values and results appear immediately in the browser with no upload step before a calculation runs, and inputs stay on your device until an account is synchronized.
Ready when you are
Start your free month of ProMud Solutions
CAD 14.99 per month after the trial, cancel any time. Read the thinking behind the tools on the blog.