The RADii™ Segmented Cement Bond Tool uses a single ceramic transmitter, an eight or sixteen segment receiver at 3 ft. and a single receiver at 5 ft. spacing. The segmented receiver generates a cement map which enables identification of cement channeling, while the single receiver generates the traditional cement bond log (CBL) and a variable-density log (VDL).

The ruggedized design of the RADii tool ensures consistently reliable and accurate operation in a wide range of environments. The oil-filled mandrels containing the transducers can be serviced individually, enabling significant time savings when the tool requires service. Ceramic transmitter and receivers enable the tool to withstand hostile high-temperature environments.

Data from the receivers are digitized and stored in the tool’s internal memory before being sequentially transmitted to surface. An internal controller transmits 8 signals from the RADii receiver, a composite signal representing the sum of the eight RADii signals, the 5 ft. receiver signal and an internally generated calibration signal. 

An optional temperature sensor can also be mounted close to the transmitter. The temperature log recorded while running in hole can be used to provide additional cement quality information.

In addition, the tool can be combined with other tools, including Gamma Ray, Casing Collar Locator, Neutron and Compensated Neutron tools to provide a comprehensive behind-casing cement and formation evaluation analysis.