Estimating a formation index using pad measurements
US11280187B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2020 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Dec 18, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for drilling a wellbore through a subterranean formation includes rotating a drill string in the subterranean wellbore to drill. The drill string includes a rotary steerable tool or a steerable drill bit including a plurality of pads configured to extend radially outward from a tool body and engage a wall of the wellbore. Radial displacements of at least one of the pads are measured while rotating (e.g., drilling). A formation index is computed while drilling by processing the measured radial displacements, where the formation index is indicative of a strength or hardness of the subterranean formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.