Calculators
Our Calculators
Six focused calculators for completion engineering — built and ready. Get in touch to purchase access.
All calculators
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 — 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, with a safety margin check against rated shear values.
Packer Circulation Calculator
Safe circulating rate & pressure across a packer
Calculate circulating pressure, rate, and 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 pipe stretch under tension, self-weight, and temperature — overpull needed to space out tools, set a packer, or locate a stuck-pipe free point.
Hydrostatic Pressure Calculator
Mud weight to psi, gradient, and Equivalent Mud Weight
Convert mud weight to pressure gradient and hydrostatic pressure at any depth — ppg, lb/ft³, specific gravity, or API gravity, with a solve-for-density mode.
Annular Velocity Calculator
Velocity from flow rate, or the rate to hit a target velocity
Fluid velocity through a pipe or annulus, from flow rate — or solve for the rate needed to hit a target velocity, with a hole-cleaning reference range.
Balanced Cement Plug Calculator
Cement volume, balanced length, spacer & displacement volumes
Cement volume, balanced length, spacer volumes, and displacement volume for a balanced cement plug — solve for plug length from a known cement volume too.
Temperature at Depth Calculator
Static formation temperature from surface temp & gradient
Static formation temperature at any depth, from surface temperature and a geothermal gradient — or solve for the gradient from a measured temperature.
Swab/Surge Pressure Calculator
Trip-speed-induced pressure change, laminar or turbulent
Surge and swab pressure from pipe trip speed, hole/pipe geometry, and mud rheology — or solve for the maximum safe trip speed.