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Circumferential Borehole Acoustic Scanning

The circumferential borehole imaging log or circumferential acoustic scanning tool is an acoustic device that produces images of the borehole wall. These images can be used for formation evaluation and borehole inspection in both clastic and carbonate environments. The tool can also be run in cased holes for casing inspection applications and combined with the wide dynamic range of the micro electrical resistivity image results in detailed geological and petrophysical information not other-wise available from either measurement independently.

Applications

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  • Present a complete 360' borehole image
  • Provide orientation and correlation of whole cores
  • Dip determination
  • Detect fractures, vugs, and washouts
  • Determine sand/shale ratios in thin-bedded intervals
  • Provide high-resolution acoustic caliper data
  • Provide borehole geometry
  • Supply detailed borehole images in fresh-, salt-, and oil-base muds
  • Locate and evaluate internal casing corrosion, mechanical wear, defects, and perforations

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