Compensated Acoustic Log has been designed for acquiring high-resolution, full-wave acoustic data. Two ceramic monopole transmitters emit the acoustic signal, which is recorded by two ceramic receivers. During one logging run, the formation travel time in the open-hole interval and the cement bond log in the cased-hole section can be recorded. The log requires a fluid-filled borehole but is independent of the mud type.
The acoustic log measures the travel time of elastic waves through the formation. To maximize the applications, the log is run together with a density and/or neutron log.
The main uses are:
cement bond evaluation (CBL) including top of cement determination