Instrumented cutter
US11828164B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2020 |
| Grant date | Nov 28, 2023 |
| Priority date | — |
| Expiry date | Nov 4, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B29/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rotary cutting tool for use in a wellbore has an instrumented cutter fitted into a cavity in the tool body. The instrumented cutter body has an outer end portion exposed at the open end of a cavity and is connected to the tool body through at least one connecting section having a smaller cross-section and greater compliance than the outer end portion. The outer end portion and the connecting section are slightly movable within the cavity but the cavity surrounds at least part of the outer end portion sufficiently closely to limit transverse movement to elastic strain of the compliant connecting portion. One or more sensors, which may be strain gauges, are used to measure force on the outer end portion in a plurality of directions transverse to the cavity and causing elastic strain of the at least one connecting section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.