Steering actuation feedback for a rotary steerable system
US12320256B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2022 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | May 16, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/0228
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for drilling a subterranean wellbore includes rotating a bottom hole assembly (BHA) in the wellbore to drill. The BHA includes a rotary steerable tool or a steerable drill bit having at least one external pad that extends radially outward into contact with a wall of the wellbore and thereby steers while drilling. A toolface demand is received and processed to compute open and close toolface angles for opening and closing a valve that actuates the steering pad. The rotation rate of the BHA is measured and processed to compute times for opening and closing the valve. The valve is opened and closed at the computed times and toolface angles at which the valve opens and closes are measured. The open and close toolface angles are compared with the measured toolface values to obtain a toolface error which is then processed to compute new open and close toolface angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.