The Gamma is used in surveying natural radioactive strength in formation. It makes use of NaI to detect gamma photon, and change to lower-power photon. Electron multiplier photo tube detects low-power photon and converts them into electronic signal, and then circuit measurement is performed to detect and assess radioactive deposit from the logging curves, and determine the sandstone formation and assess shale content, and reflect permeability of sludging formation. Connecting to other instruments, it can be used in compare and perform depth match on all logging curves. When used in casing wells, its logging curves can be used to compare with borehole data, to ensure accurate perforation depth.

The well temperature measurement adopts high-accuracy platinum temperature sensors, enlarging measurement through circuit convert to get well temperature.

Technical parameters