Method of using electrical and acoustic anisotropy measurements for fracture identification
US6925031B2 · kind B2 · utility
16Cited by
13References
14Claims
0Family size
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Key dates
| Filing date | Dec 12, 2002 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Sep 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Measurements made by a cross-dipole acoustic logging tool in a borehole are processed to determine the principal directions of azimuthal anisotropy of a subsurface formation. Measurements indicative of azimuthal resistivity variations are also made with a multicomponent induction logging tool. These electrical measurements are processed using the principal direction determined from acoustic measurements to give an estimate of azimuthal resistivity variations. Based on modeling results, azimuthal resistivity variations are interpreted to estimate a fracture depth in the rock for known fluids therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.