1. n. [Drilling]

A representation of the integrity of the cement job, especially whether the cement is adhering solidly to the outside of the casing. The log is typically obtained from one of a variety of sonic-type tools. The newer versions, called cement evaluation logs, along with their processing software, can give detailed, 360° representations of the integrity of the cement job, whereas older versions may display a single line representing the integrated integrity around the casing.

See: cement bond log