Application of Digital Phase Sensitive Detection for Electromagnetic Propagation Logging while Drilling

Sheng Hu Liu; Ya Min Xing

doi:10.4028/www.scientific.net/AMR.468-471.546

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 468-471Application of Digital Phase Sensitive Detection...

Application of Digital Phase Sensitive Detection for Electromagnetic Propagation Logging while Drilling

Abstract:

Intense electromagnetic interference while drilling prevents traditional analog phase sensitive detection (APSD) from correctly acquiring electromagnetic wave signal of logging while drilling (LWD). A digital phase sensitive detection (DPSD) utilizes high-performance floating-point DSP and FPGA to separately process real part and imaginary part of the acquired logging signal, changes traditional calculating method, improves processing speed and calculating precision. The programmable technique used can fully utilize logging information, simplify control logic, improve precision of timing control and measuring precision. Discussed are the principle, characteristics, implement of circuit and analysis of experimental data. Testing result shows that the DPSD may utilize logging information effectively and optimize the LWD system.

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Periodical:

Advanced Materials Research (Volumes 468-471)

Pages:

546-549

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.468-471.546

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Online since:

February 2012

Authors:

Sheng Hu Liu, Ya Min Xing

Keywords:

Digital Phase Sensitive Detection (DPSD), Electromagnetic Propagation Resistivity Logging, Logging Tool, Logging while Drilling (LWD)

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