The optimal design of receiving circuit in acoustic logging while drilling tool

DOI

10.2991/iiicec-15.2015.328How to use a DOI?

Keywords

logging while drilling; 11-order; highpass analog active filter; dynamic gain system.

Abstract

This paper begins with the problems encountered in logging while drilling practice, proposing the necessity and requirement of receiving circuit with rigorous design. Considering the fact that the amplitude of noise signal with low frequency is far greater than that of formation wave, this paper provides a design of 11-order high pass analog active filter based on Chebyshev principle to substantially reduce the drill pipe wave in low frequency. In addition, a dynamic gain system with a large range from -20dB to 70 dB is also embedded. Throughprecise theoretical calculation, each step interval of the dynamic gain is 3dB. The two parts combine to condition the logging signal properly. At last, the testing result shows that the real circuit possesses desired features, which can satisfy the requirement of logging while drilling activity.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zheng Zhang
AU  - Penglai Xin
AU  - Hongbin He
PY  - 2015/03
DA  - 2015/03
TI  - The optimal design of receiving circuit in acoustic logging while drilling tool
BT  - Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference
PB  - Atlantis Press
SP  - 1475
EP  - 1481
SN  - 2352-538X
UR  - https://doi.org/10.2991/iiicec-15.2015.328
DO  - 10.2991/iiicec-15.2015.328
ID  - Zhang2015/03
ER  -