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;
• pulse miscount elimination thanks to recording channel “dead time” correction for analog signal transmission with bipolar pulses 10÷20 microsec due to statistic adjustment;
• high-efficiency neutron counter with helium filling agent.
TzSP-2NNK-43/60 is to be run with the log recorder Volcan V3 with one-core and tree-core cable.
|
Waterlogged porosity range, % |
1÷40 |
|
Relative measurement error, % |
5 |
|
Probe length (small/large), mm |
300/600 |
|
Probe length variability (build-up number/length), mm |
3/100 |
|
Neutron generator type |
IBN-8-5 |
|
Neutron source emission rate, n/sec |
2×107 |
|
Maximal operating temperature, °C |
120 |
|
Maximal operating pressure, MPa |
100/60 |
|
Downhole tool dimensions, mm: diameter length |
43/60 1600 |
|
Weight, kg, up to |
12/18 |