Downhole library of master wavelets for VSP-while-drilling applications
US7274990B2 · kind B2 · utility
7Cited by
19References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 24, 2003 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Oct 1, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A controllable seismic source is used in a seismic-while-drilling system for obtaining VSP data. Coded information is sent downhole about the signal generated by said controllable source. The information about the seismic source is used for reconstructing the source waveform and processing the VSP data. Optionally, a reference signal measured at one depth of the BHA is used for processing of signals at subsequent depths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.