Drill bits for oil and gas applications
US11008816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2019 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Jul 29, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/1216
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit includes multiple cutting devices and a microelectronics unit. Each cutting device of the multiple cutting devices includes a cutting layer formed to cut a rock formation and a capacitive sensor disposed adjacent the cutting layer. The capacitive sensor is configured to generate an electric field across the cutting layer and to transmit a signal corresponding to a voltage associated with the electric field. The microelectronics unit of the drill bit is configured to receive the signal from the capacitive sensor of each cutting device of the multiple cutting devices such that the microelectronics unit receives multiple signals and to determine an indicator of mechanical wear of the drill bit based on a change in the voltage associated with the electric field across the cutting layer of each cutting device of the multiple cutting devices using the multiple signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.