Optimized rotation of a drill string during sliding mode of directional drilling
US10125598B2 · kind B2 · utility
5Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2013 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Nov 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D13/62
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An example method for optimized rotation of a drill string coupled to a drill bit and disposed within a borehole may comprise determining an angular velocity of at least part of the drill string. An angular velocity threshold to avoid static friction may also be determined. Additionally, a minimum input torque to apply to the drill string to maintain the angular velocity at or above the angular velocity threshold may be determined. The method may further include generating a control signal to a top drive motor based, at least in part, on the minimum input torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.