Cation exchange capacity and water saturation from array induction data
US10215876B2 · kind B2 · utility
4Cited by
3References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 6, 2016 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Oct 26, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In-phase and quadrature components have different relationships with some important petrophyscial parameters, such as water saturation and mineral cation exchange capacity (CEC). In clay-containing subterranean rock formation such as shaly sand formations, these parameters can be estimated using different components of array induction tool data combined with other knowledge about the clay-containing formation. Some parameters, such as mobility and fraction of counterions are valid in cases where the pore water solution is an electrolyte of NaCl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.