Challenge
Stick-slip along the drill string is a significant type of vibration that disrupts drilling operations, particularly in the increasingly complex wells found on the Norwegian Continental Shelf (NCS). It poses a major concern due to its impact on drill performance and equipment integrity.
Invention
Our innovative concept uses along-string damping elements based on magnetic damping to address these vibrations. This groundbreaking approach aims to mitigate the issues caused by stick-slip and enhance drilling efficiency.
Value
Downhole drill string vibrations and stick-slip are common problems that hinder optimal performance during the drilling of complex well trajectories. The consequences include damage to drill bits and downhole tools, drill string wear which may lead to twist-off, and formation damage. Recent advancements in interpreting drill string vibrations have shown that excitation sources are not limited to the bit but can occur anywhere along the string. Our solution aims to address these sources comprehensively.
Status
- Proof of concept successfully demonstrated with a small-scale prototype.
- Development of a simulation environment featuring a transient stiff-string torque and drag model, which accounts for axial, torsional, and lateral displacements, configured with real field case data.
- Promising simulation results in field cases.
Next steps
To further validate the concept, we plan to:
- Evaluate the thermo-magneto-mechanical response of the magnetic damping tool at a 1:1 scale.
- Conduct incremental testing of prototypes under realistic downhole conditions.
Possible commercialization options
The patent for this innovative solution is owned by NORCE.
For commercialization, we are considering:
- Establishing a partnership with a small Norwegian technology company.
- Collaborating with a large service provider.