Multi-well anisotropy inversion
US10436921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2012 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Feb 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/284
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method can include providing compressional and shear-wave slowness data for a homogeneous, anisotropic formation at deviated borehole angles greater than 40 degrees and less than 90 degrees as defined by a vertical transverse isotropy (VTI) symmetry axis; providing a relationship for normal and tangential compliances (e.g., BN and BT); and, based on the data and the relationship, outputting a model for calculating anisotropy parameter values (e.g., α0, ε, .δ) that characterize the homogeneous, anisotropic formation (e.g., along a borehole angle of 90 degrees). Various other apparatuses, systems, methods, etc., are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.