Methods for making acoustic anisotropy logging while drilling measurements
US8547788B2 · kind B2 · utility
6Cited by
23References
20Claims
0Family size
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Key dates
| Filing date | May 17, 2010 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Sep 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining an acoustic anisotropy of a subterranean formation includes measuring acoustic wave slownesses at three or more toolface angles while rotating a logging while drilling tool in a borehole. Compressional, shear, and/or guided wave slownesses may be measured. The measured slownesses are fit to a mathematical model to obtain maximum and minimum slownesses. The maximum and minimum slownesses are processed to determine the acoustic anisotropy of the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.