Rotational oscillation control using weight
US10689967B2 · kind B2 · utility
3Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2017 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Dec 11, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B3/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and autodriller for drilling a wellbore with a drill rig by rotating a drillstring and a drill bit with a drill rig drive system; applying an initial weight of the drillstring on the drill rig WOB; measuring drill rig properties to derive an anticipated drill bit rotation speed; and changing the weight of the drillstring on the drill rig WOB so that a corresponding change to the downhole weight on the drill bit occurs approximately simultaneously with a change in the anticipated drill bit rotation speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.