Cement Bond Log 2
Cement Bond Log 2 : A sonic log that determines the top of the cement column and estimates the quality of the cement bond between the casing and the formation. Works on transmission of a sound wave and identifies areas that conduct the wave and those that do not (free pipe ringing). Communication is likely if CBL>10% of unbonded mv reading. Communication is unlikely is CBL < 5% of unbonded mv reading and bond length > 10 ft (3 m)
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