is designed for reservoir saturation nature determination, lithological profiling, abnormal thermal neutrons absorbent estimation (Cl, H, Si, Ca, Fe, Mn, Ni, Co, et al.), estimation of scattering,  absorbing neutron and gamma-ray parameters as well as their ratio.  


Registered information can be used for:

• reservoir saturation character determination;
• downhole cross-section lithological breakdown;
• element content estimations, which anomalously absorb thermal neutrons (Cl, H, Si, Ca, Fe, Mn, Ni, Co and others);
• estimations of dissipative and absorptive neutrons and gamma-radial parameters in rock and their correlation.

Features and advantages:

• register gamma-radiation in wide energy range, increasing SNGK methodical possibilities;
• the tool is made in the form of digital two sonde module, which contains two multichannel energy spectrometers.

Delivery in complete set: downhole tool, interface unit, technological software, maintenance tool, spare parts and accessories, certificate, operating manual.


Gamma-quantum measurements range, MeV


Energy resolution, %

up to 12

Integral nonlinearity of spectrum energy scale

up to ±3

Energy scale instability, %

up to 1

Spectrometric track dead-time, microsec


Maximum cable length, mm


Maximum pressure, MPa


Operating temperature range, °C

– 5÷+120

Tool dimensions, mm:


    length (without centralizers)

    length (with centralizers)



up to 1650

up to 300

Weight (without centralizers), kg

up to 12

Weight (with centralizers), kg

up to 21