Title:
DOWNHOLE LIBRARY OF MASTER WAVELETS FOR VSP-WHILE-DRILLING APPLICATIONS
Document Type and Number:
WIPO Patent Application WO2006001831
Kind Code:
A3
Abstract:
A controllable seismic source (301) 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 (301). The information about the seismic source (301) is used for reconstructing the source waveform and processing the VSP data. Optionally, a reference signal measured at one depth (3005, 307, etc.) of the BHA is used for processing of signals at subsequent depths.
Inventors:
MATHISZIK HOLGER (DE)
ZHOU RAN (US)
ZHOU RAN (US)
Application Number:
PCT/US2004/042482
Publication Date:
February 09, 2006
Filing Date:
December 17, 2004
Export Citation:
Assignee:
BAKER HUGHES INC (US)
International Classes:
G01V1/48; G01V1/40
Foreign References:
| US6584406B1 | 2003-06-24 | |||
| US6308137B1 | 2001-10-23 | |||
| US4896303A | 1990-01-23 | |||
| US6078868A | 2000-06-20 |
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