Cement Bond Logging - Cased-Hole Log Analysis and Reservoir Performance Monitoring - page 209

Well-Cemented Pipe

In the ideal case of well-cemented pipe, the following diagnostics can be expected:

1. Low amplitude (a few millivolts only)
2. Transit time increasing due to stretch or cycle skips
3. Strong formation arrivals

Figure 12.24 illustrate logs for a well-cemented section.

Fig. 12.24 CBL/VDL in a well-cemented pipe. Courtesy Schlumberger