Analysis refracted acoustic waves measured in a borehole
US8813869B2 · kind B2 · utility
5Cited by
31References
63Claims
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Key dates
| Filing date | Mar 20, 2008 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Aug 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/50
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and related systems are described for measuring and analyzing refracted acoustic energy. A plurality of receivers mounted are on a downhole tool, and are arranged and adapted to receive refracted acoustic energy from a downhole formation. Measurements of refracted acoustic energy is analyzed such that information relating to an azimuthal direction relative to the downhole tool of an interface within the downhole formation can be estimated. The receivers can be mounted on a drill collar as part of a LWD tool and steering of the drilling trajectory can be based in part on the estimated formation information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.