Formation clay typing from electromagnetic measurements
US10866335B2 · kind B2 · utility
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6References
20Claims
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Key dates
| Filing date | Jul 20, 2018 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Aug 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An array electromagnetic tool is run in a borehole, and resulting signals are processed to provide at least one of real and imaginary conductivity components, σR* and σI*. The at least one of real and imaginary conductivity components is compared to a corresponding representative conductivity component of a plurality of different clay groups and a determination of clay type in the formation is made therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.