发明名称 |
Televiewer image wood-grain reduction techniques |
摘要 |
<p>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.</p> |
申请公布号 |
AU2010239502(B2) |
申请公布日期 |
2015.09.24 |
申请号 |
AU20100239502 |
申请日期 |
2010.04.15 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
STEINSIEK, ROGER R.;HARRIS, JASON M.;ZHAO, JINSONG;PATTERSON, DOUGLAS J.;DOMNANISH, JAMES B. |
分类号 |
E21B47/14;E21B49/00;G01V1/30;G01V1/40;G01V1/50 |
主分类号 |
E21B47/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|