Source intensity: 30mCi137Cs radioisotopes, Long/short-spaced natural gamma probes are all be used.

Scintillating material: Nal(T1), Φ23×60m
Photomultiplier Tube: GDB23
Count range: 0 to 32000cps
Long spacing: between 400 to 500mm adjustable.
Short spacing: between 250 to 350mm adjustable
Density measuring range: 1 to 4g/cm3
Natural gamma measuring range: 1 to 10000API
Dimensions: Φ45×1750mm, Φ50×1804mm (3000m)
Pressurization: ≤ 20Mpa, ≤ 30Mpa (3000m)
Digital transmitter: 8-bit serial output
Weight: 8.4kg, 10.7 kg (3000m)

Applications:

It is specially apply for exploring the dry borehole. The method that compensated density can divide the strata, determine.

the porosity of rock and density of volume. Naturalγis applied to identify lithology, locate the strata, estimate the sludge

content, tell the rock strata from the shale one. Evaluate the radiate minerals that have a content of potash, anhydrite or U

and find out the non-radiate minerals such as salty rock, non-water gypsum and so on.