is designed to determine rock density and rock effective atomic number in oil-and-gas wells.
Problems to be solved:
- simultaneous density estimation ρ and rock effective atomic number determination Zeff ;
- ρ and Zeff determination improved accuracy at the expense of scattered gamma-ray full spectrum analysis when Zeff determining.
Specifications
| Measurements range: rock density, g/cm3 effective atomic number, unit | 1.5-3 10-20 |
| Measurement error: density, % effective atomic number, unit | ±2 ±0.25 |
| Spectrometer quantization levels number | 128 |
| Maximum operating temperature oC | 120 |
| Maximum operating pressure, MPa | 80 |
| Downhole tool dimensions, mm: diameter length | 48, 90 1500, 250 |
| Weight, kg | 15, 70 |
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