DrillPyze: coupled drillstring model

DrillPyze simulates the coupled axial–torsional dynamics of a drillstring in real time: soft-string friction along the well path, bit–rock interaction, top-drive controllers and an autodriller, circulating hydraulics, wellbore temperature and rock strength at the bit. It includes an interactive simulator UI with a driller’s display and a browser version (DrillPyze Lite).

This documentation is built from the coupled-model branch.

Guide

• DrillPyze — coupled drillstring dynamics
  • Mathematical model
  • Installation
  • Interactive simulator
  • Workflow: set up, initialise, step
  • Performance
  • Verification (tests/)
  • Documentation
  • References

Model derivation

• Bit–rock interaction: from the Bit Model Library to three reduced models
• Hydraulics: steady losses and drift-flux transients
• Derivation of the DrillPyze coupled axial–torsional model
• Rock strength, pore pressure and temperature at the bit

Physics specification

• Physics specification

API reference

• API reference
  • DrillPyze
  • Case files and builder (config)
  • Simulation (simulation)
  • Parameters (parameters)
  • Top-drive controllers (controllers)
  • Time-step kernel (kernel)
  • Well path (survey)
  • Wellbore and fluid (wellbore)
  • Drillstring (drillstring)
  • Cell geometry (geometry)
  • Steady torque and drag (statics)
  • Hydraulics (hydraulics)
  • Wellbore temperature (thermal)
  • Formation and rock strength (formation)
  • Units (units)
  • Simulator UI server (ui.server)

Indices

• Index

• Module Index