Decision by Expert Technical Council at State Commission on Mineral Resources
Recommend the inclusion of the combined steady-state nuclear LWD tool (made by OOO NPP Energiya, LLC) in the register of technologies approved by Expert Technical Council at State Commission on Mineral Resources.


Geophysical equipment

Geophysical instrumentation manufactured by RPE Energiya, LLC (ООО «НПП Энергия»)

Key element


Neutron tubes developed by RPE Energiya, LLC (ООО «НПП Энергия») and FSUE Integrated Plant “Electrohimpribor” (ФГУП «Комбинат «Электрохимприбор»)


Neutron tube AREV-40

Generates pulsed neutron flux with frequency of 50–20,000 pulses/s and energy of 14 MeV.

Increased resistance to high temperatures, increased lifetime.

Used in geophysical borehole instrumentation to carry out logging.

General technical specifications
Average neutron flux at acceptance and delivery, 108 s-1, min.  1,5
Average neutron flux during operation within the period of running time and storability, 108 s-1, at temperature +120°C, min. 1,0
Storability time, years 2
Tube mean lifetime, hrs, min. 400
Operation mode pulsed÷continuous
Neutron radiation pulse frequency, kHz, min 10
Neutron radiation pulse duration, μs  30 DC to
Maximum acceleration voltage, kV 80
Tube current, μA 85
Ion source power supply, kV +2
Overall dimensions:
  • length, mm
  • diameter, mm


Weight, g, max. 280
Application instrumentation MFNG-601 (МФНГ-601) types