Cased Completion.
Precision calculators.
A focused calculator suite for Oil & Gas completion engineers — tubular mechanics and completion tools, built to industry-standard formulas. Installable on Windows, macOS, Linux, iOS & Android.
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Why Our Calculators
Engineered for the oilfield
Purpose-built tools that understand completion engineering — not generic spreadsheets.
Engineering Precision
Every calculator is built to API, ISO, and NORSOK standards. Validated against field data and industry benchmarks for reliable results.
Instant Results
Get calculation results in seconds, not hours. No spreadsheets, no manual lookups — just enter your data and get answers.
Audit-Ready Reports
Generate detailed PDF reports with full calculation methodology, inputs, and outputs. Perfect for regulatory submissions and peer review.
Install Anywhere
Available on Windows, macOS, Linux, iOS, and Android. Install once and take your calculators wherever you work.
Calculators
Featured calculators
Purpose-built calculators for completion engineers.
Area Calculator
Pipe, casing & annular area calculations
Calculate internal, external, and annular cross-sectional areas for any tubular combination — the foundation for capacity, velocity, and force calculations.
String & Casing Volume Calculator
Tubing, casing & annular volume / capacity
Calculate internal capacity and annular volume for tubing and casing strings of any length and configuration — displacement volumes for cementing, fluid changes, and circulating operations.
String Weight Calculator
Air weight & buoyed string weight
Calculate true string weight in air and buoyed in completion or drilling fluid — accurate hook load and hanger load figures for running and landing strings safely.
Frequently asked questions
Everything we can answer honestly before launch — if yours isn't here, just ask.
Coming Soon
Want to know
when we launch?
Six completion engineering calculators are in development. Get in touch and we'll let you know as each one ships.
Calculators in Development
Each one built to industry-standard formulas and checked against field data.
Platforms Supported
Windows, macOS, Linux, iOS & Android — one install, everywhere.