Calculators
Our Calculators
Six focused calculators for completion engineering — currently in development, launching one at a time.
Calculators fall into two categories. Tubular Mechanics covers the physics of pipe, casing, and strings — area, volume, weight, and stretch. Completion Tools covers the equipment that goes downhole — shear pins and packers. Filter by category or search by name below.
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.
Shear Out Force Calculator
Shear pin & shear screw release force
Determine the force or pressure differential needed to shear setting pins and release rings in downhole tools, with a safety margin check against rated shear values.
Packer Circulation Calculator
Safe circulating rate & pressure across a packer
Calculate circulating pressure, rate, and the resulting differential force across a set packer, so you can circulate or reverse out without unseating or over-pressuring it.
Stretch Calculator
Elastic pipe stretch for spacing & packer setting
Calculate elastic stretch of tubing or casing under tension, pressure, and temperature effects — the pickup weight or overpull needed to space out tools or set a packer at the correct depth.