Conductively Guided Borehole Radar Wave for Imaging Ahead of a Drill Bit
作者： Binzhong Zhou , Matthew van de Werken
DOI: 10.1109/LGRS.2015.2421512
关键词: Continuous-wave radar 、 Drill string 、 Radar 、 Radar imaging 、 Borehole 、 Acoustics 、 Guided wave testing 、 Remote sensing 、 Bistatic radar 、 Drill bit 、 Geology
摘要: A guided wave is induced along a conductive logging cable or water-filled borehole during radar (BHR) surveying. Such normally considered as unwanted interference to normal BHR waves and needs be suppressed, either through designs data processing. In this letter, we advocate that the can coupled onto drill string, which act forward-looking antenna for imaging ahead of bit while drilling. Using collected by monostatic with different configurations at an abandoned mine site in Brukunga, South Australia, demonstrate capability about 2–6 m tested section.
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