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Diamond Drill-bit Seismic-While-Drilling Velocity Analysis Using Semblance and MUSIC from Hillside, South Australia

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Authors
Sun, Bai Chun
Bona, Andrej
King, A.
Zhou, B.
Date
2014
Type
Conference Paper

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Citation
Sun, B.C. and Bona, A. and King, A. and Zhou, B. 2014. Diamond Drill-bit Seismic-While-Drilling Velocity Analysis Using Semblance and MUSIC from Hillside, South Australia, in 76th EAGE Conference & Exhibition, 16-19 June 2014. Amsterdam, Netherlands: European Association of Geoscientists and Engineers.
Source Title
76th EAGE Conference & Exhibition incorporating SPE EUROPEC 2014
Source Conference
76th EAGE Conference & Exhibition incorporating SPE EUROPEC 2014
School
Department of Exploration Geophysics
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Abstract

In this paper, we demonstrate the resolution differences between MUSIC and semblance using synthetic examples. Both methods are applied to detect coherent move-out from the drill-bit. The coherency can be used to obtain an updated velocity information around the bore hole. The velocity is estimated based on approximately known drill-bit position. We also perform the drill-bit imaging using coherent cross correlation migration. We illustrate the two methods with synthetic examples and a field data example from diamond drill-bit SWD experiment at Hillside (South Australia).