Clay detection and quantification using downhole low frequency electromagnetic measurements
US11237292B2 · kind B2 · utility
3Cited by
6References
26Claims
0Family size
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Key dates
| Filing date | Oct 25, 2019 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Oct 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems are provided for clay detection, clay typing, and clay volume quantification using downhole electromagnetic measurements conducted by a downhole logging tool on a formation at a low frequency less than 5000 Hz. The downhole electromagnetic measurements are used to determine permittivity data that characterizes permittivity of the formation at the low frequency less than 5000 Hz. The downhole low frequency electromagnetic measurements are nondestructive, and the results indicate it is with high sensitivity to the existence of clays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.