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TzSP-2NNK-43/60 Downhole dual neutron-neutron logging tool

is designed to measure the thermal neutron flux caused by fast neutron moderation in the rock to provide the formation total waterlogged porosity and lithology within different kind of wells.

Features and Advantages

  • downhole tool small diameter;
  • pulses miscount elimination thanks to recording channel “dead time” correction for analog signal transmission by bipolar pulses of 10ч20 microsec due to static adjustment;
  • high-efficiency neutron counter with helium filling agent


Waterlogged porosity range, %1-40
Relative measurement error, %5
Probe length (small/large), mm300/600
Probe length variability ( build-up number/length), mm3/100
Neutron generator typeIBN-8-5
Neutron source emission rate, n/sec2×108
Power supply, V50-60
Maximum operating temperature, °С120
Maximum hydrostatic pressure, MPa60
Downhole tool dimensions, mm

Weight, kg12/18

TzSP-2NNK-43/60 tools is to be run with the log recorder Vulkan V3 with one-core and tree-core cable.

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