Monday, October 20, 2014

Ultrasonic Borehole Imager (UBI)

Other Common Names to this log:

1. CBIL (pronounced Cybill) stands for Continuous Borehole Image Log 
2. Borehole televiewer

COMPARISON WITH OTHER IMAGE LOGS:


Acoustic image logs, also called televiewer or CBIL logs, use a rotating transducer to measure acoustic impedance images over the entire borehole wall, as well as an acoustic caliper.
Resistivity imager logs, also called microscanner or FMS or FMI logs, carry an array of electrodes on pads used to produce an electrical image of the formations seen on the borehole wall.  Microscanners have better vertical resolution and dynamic range than televiewers, but televiewers see the entire wellbore while microscanners usually see less than 100%.

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