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Prediction ahead of the bit using borehole guided waves

Hellwig, Olaf; Bohlen, Thomas

Abstract (englisch): We present a method for seismic prediction ahead of the bit which employs the conversion of borehole guided waves (tube waves) into body waves and vice versa at the borehole bottom. The feasibility of this method, in particular the conversion of borehole guided waves into S‐waves and its directivity, is investigated by means of 2.5D finite‐difference modeling in the time domain. Furthermore, we present a processing scheme which takes into account the characteristics of the involved wave types and test the processing using synthetic data generated by 2.5D finite‐difference modeling.

Zugehörige Institution(en) am KIT Geophysikalisches Institut (GPI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2008
Sprache Englisch
Identifikator DOI: 10.1190/1.3054821
KITopen ID: 1000061549
Erschienen in SEG Technical Program Expanded Abstracts 2008
Seiten 353-357
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