RFD logging-while-drilling focused resistivity logging tool
FRD logging-while-drilling fodused resistivity logging tools use Current-Mode, software-focusing way when working ，to get apparent formation resistivity factor ，its probing depth could be to more than 400mm，could be mounted to the MWD systerm，could complete the real - time upload and storage of data, enabling lwd logging.
Specification
● temperature , pressure：
-25℃～150℃，
100MPa；
● Outer diameter of the instrument ：
Ф171mm；
● length of instrument：3500mm；
● measuring range：
0.2Ω·m-20000Ω·m；
●measuring accuracy.：
±5% or ±0.06Ω·m or ±0.025mmho，choose the big one；
● probing depth：>400mm；
● vertical resolution in Pixels：200mm；
●Power Consumption : less than 2w ;
●Downhole data processing method : real - time Transport and underground storage, the storage time is not less than 200 hours.
