is designed to register energy spectrum gamma-ray radiation, forming:
– from natural radioactive elements;
– during neutron deceleration and absorption process from sealed radionuclide source and high-energy gamma-radiation dissipation.
Registered information can be used for:
- determination fluid content;
- lithological breaking-up of well cross-section;
- to estimate elements concentration (Cl, H, Si, Ca, Fe, Mn, Ni, Co, etc.), anomalously absorbing thermal neutrons;
- dissepating and absorptive neutron and gamma-ray rock parameters and its ratios.
Features and Advantages:
- register gamma-ray logging in energy wide range, increasing SNGK methodic possibility;
- the tool is a digital double-sonde module with two multichannel energy spectrometers;
- the tool is equipped with a highly sensitive casing collar locator for connection measurements in horizontal shafts;
- recording of measurement results in nonvolatile memory;
- the tool has the ability to repeatedly turn on / off the tool during logging to save battery power.
|
Number of sondes: NNKt SNGK-Sh SGK |
2 2 (1 spectrum for 1024 channels) 1 (1 spectrum for 512 channels) |
|
Gamma-quantum measurements range, MeV: SNGK SGK |
0.1÷8.5 0.1÷3.5 |
|
Energy resolution, % |
up to 12 |
|
Integral nonlinearity of the spectra energy scale, % |
up to ±3 |
|
Energy scale instability, % |
up to 1 |
|
Spectrometric track dead-time, microsec |
2 |
|
Maximum pressure, MPa |
80 |
|
Operating temperature range, °C |
– 5÷ +120 |
|
Tool dimensions, mm: diameter tool length with centralizers |
48 6200 |
|
Weight, kg |
up to 55 |
|
Continuous time work, hour |
20 (40-60)* |
*depends on housing material