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» Rugged tool construction allows operation in hostile environments
» Rugged tool construction allows operation in hostile environments

Radial Cement Bond Log 

Accurate information of cement channeling behind casing

The radial cement bond tool utilizes a single ceramic transmitter, an eight-segment receiver at 3-ft spacing and a single receiver at 5-ft spacing to accurately measure the quality of the cement job in a cased hole well environment. The segmented receiver provides a good indication of cement channeling behind the casing.  

This cement bond tool consists of oil-filled, pressure-compensated transmitter and receiver sections. The transmitter and both receivers are ceramic to withstand the hostile high temperature of well environments. Upon each transmitter firing, data from all the receivers is digitized and stored in internal memory, then sequentially transmitted to the surface. 

The digital signal section is capable of transmitting data to the surface from tools run below the RCBL such as gamma ray, casing collar log (CCL), in-line neutron, compensated neutron or other tools with one or two pulse channels. 

Transmission of the sonic data to the surface is accomplished by an internal controller which transmits eight to sixteen signals from radial receivers/sectors, a composite 3-ft signal (sum of all eight radial signals), a 5-ft receiver signal, and an internally generated calibration signal. Transmission of the remaining signals consists of digitally encoded data transmitted after the acoustic signals. 

» Accurate information of cement channeling behind casing

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