Wear resistant electrodes for downhole imaging
US9880311B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Apr 29, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Apr 29, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R3/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Devices and methods for well logging using a wear resistant electrode are provided. A downhole device may include a drill bit, a gauge pad mounted on the drill bit, and a first electrode mounted in the gauge pad. An insulating polycrystalline diamond (PCD) material may surround at least a portion of the first electrode. Additionally, the first electrode may include an electrically conductive wear resistant contact point that maintains constant contact with a wall of a wellbore. Additionally, the first electrode may measure an impedance of a geological formation during a drilling operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.