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US 2025/0084752 A1Published application
Mitigation of severe dynamic vibrations via stick slip promotion
AssigneeSchlumberger Technology Corporation
InventorsAshley Bernard Johnson, Nathaniel Wicks, Amandine Battentier
Life of this patent
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Abstract
A method for drilling a subterranean wellbore includes rotating a bottom hole assembly in the wellbore to drill and measuring a magnitude of a potentially damaging vibrational component. The measured magnitude is compared to a corresponding threshold and the drill string rotation may be perturbed to increase stick slip when the measured magnitude exceeds the threshold.
Claims20
A method for drilling a subterranean wellbore comprises:
- rotating a drill string in a wellbore;
- measuring at least one of a whirl, a high frequency torsional oscillation, and a harmonic stick slip oscillation while rotating;
- comparing the at least one of the whirl, the high frequency torsional oscillation, and the harmonic stick slip oscillation with a corresponding threshold;
- and
- perturbing the rotating to increase stick slip when the at least one of the whirl, the high frequency torsional oscillation, and the harmonic stick slip oscillation exceeds the corresponding threshold.
2 more elements
A system for drilling a subterranean wellbore, the system comprising:
- a drill string rotating in a wellbore;
- and
- a processor configured to:
- receive at least one of a measured whirl, a measured high frequency torsional oscillation, and a measured harmonic stick slip oscillation while the drill string rotates in the wellbore;
- compare the at least one of the measured whirl, the measured high frequency torsional oscillation, and the measured harmonic stick slip oscillation with a corresponding threshold;
- and
- recommend changes to a rotation of the drill string to promote stick slip when the at least one of the whirl, the high frequency torsional oscillation, and the harmonic stick slip oscillation exceeds the corresponding threshold.
4 more elements
A method for drilling a subterranean wellbore comprises:
- rotating a drill string in a wellbore;
- measuring a stick slip amplitude while rotating the drill string;
- comparing the measured stick slip amplitude with a stick slip threshold;
- and
- perturbing the rotating to increase stick slip when the measured stick slip amplitude is less than the stick slip threshold.
2 more elements
Dependencies are inferred from the claim text.