发明名称 TELEVIEWER IMAGE WOOD-GRAIN REDUCTION TECHNIQUES
摘要 Measurements made by a transducer assembly for downhole imaging are affected by reverberations between the transducer and the window on the outside of the assembly. The reverberations result in a stationary noise on the image. Hardware solutions to improve signal-to-noise ratio includes using a composite transducer, adjusting the distance between the transducer and the window. SNR can also be improved by processing techniques that include stacking, fitting a sinusoid to the reverberation, by envelope peak detection, and by applying a notch filter.
申请公布号 WO2010123746(A2) 申请公布日期 2010.10.28
申请号 WO2010US31186 申请日期 2010.04.15
申请人 BAKER HUGHES INCORPORATED;STEINSIEK, ROGER, R.;HARRIS, JASON, M.;ZHAO, JINSONG;PATTERSON, DOUGLAS, J.;DOMNANISH, JAMES, B. 发明人 STEINSIEK, ROGER, R.;HARRIS, JASON, M.;ZHAO, JINSONG;PATTERSON, DOUGLAS, J.;DOMNANISH, JAMES, B.
分类号 G01V1/40;E21B47/14;E21B49/00;G01V1/30;G01V1/50 主分类号 G01V1/40
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