Fracture interpretation with resistivity and sonic logs in biaxial anisotropic formations
US11230922B2 · kind B2 · utility
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| Filing date | Jan 20, 2016 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Sep 5, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/646
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Evaluation of formation and fracture characteristics based on multicomponent induction (MCI) and multipole sonic logging (MSL) data includes automated calculation of inverted biaxial anisotropy (BA) parameters for the formation by performing an iterative BA inversion operation based on the MCI log data and using a BA formation model that accounts for transfers by axial formation anisotropy to resistivity. The inverted BA parameters and the processed MSL data can be used, in combination, to calculate a quantified value for an identification function, to indicate estimated presence or absence of a fracture in the formation.
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