Presentations
- Downhole ROP is useful for closed loop directional control to know how much footage has been drilled ahead.
- It is also useful when trying to control penetration per revolution (PPR).
- PPR control is the best way to drill interbedded formations.
- Auto drillers can be unstable when drilling through different formations and can be stabilized by dynamically adjusting the gains of the system.
- This requires detection of instability and adjustment of the gains based on feedback.
- Another approach is an auto driller that primarily operates in penetration per revolution mode, adjusting to stay within constraints (WOB, Diff Pressure, Torque).
Downhole ROP
More Details »Downhole ROP is useful for closed loop directional control to know how much footage has been drilled ahead.
Unconditionally Stable Auto Driller
More Details »Auto drillers can be stabilized by dynamically adjusting the system's gains based on feedback to prevent instability.