SCOPE OF APPLICATION
- Oil and gas wells, with/without tubing
- Operating or killed wells
- Any lithology
- Heavy or light cement
- Well filling - gas/water/oil
FEATURES
autonomous operation in the borehole with data recording in non-volatile memory and possibility of tool multiple switching on/off during logging to save battery power
Multiparametric studies realized in one trip:
- Compensated Neutron Log to determine water saturated porosity, neutron parameters of the environment
- Three-probe spectral neutron gamma-ray logging for radial (3 logging depths) determination of elemental composition, nuclear parameters of the medium
- Spectral gamma-ray logging to determine K, U, Th concentrations
- Pressure survey and high-sensitivity temperature log
ADVANTAGES
- Express quality evaluation of cement filling behind two pipes (including accumulation of gas, water)
- Formation evaluation: saturation, porosity; by indirect parameters: density, permeability;
- Evaluation of formation lithology
Specifications
| Number of probes: NNKt SNGK-Sh SGR | 2 2 (1024 channels) 1 (512 channels) |
| Ranges of gamma ray energies, MeV SNGK SGR | 0,1–8,0 0,1–3,5 |
| Energy resolution of the 137Cs peak spectra, % | Max. 15 |
| Integral nonlinearity of the energy scale of spectra, % | Max. ±3 |
| Instability of the energy scale, % | Max. 1 |
| Maximum operating pressure, MPa | 80 |
| Maximum operating temperature, °С | 120 |
| Tool dimensions, mm: diameter tool length with centralizers | 48 6200 |
| Tool weight, kg | Max. 55 |
| Continuous logging time, hr | 20 (40–60)* |
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