is designed for natural radioactive element content quantitative measurements: thorium (Th), uranium (U) and potassium (K) in rocks while different wells surveying.
Features and advantages
- interval-by-interval full gamma-spectra accumulation and further digitized data telemetering;
- improved accuracy in Th, U, K detection;
- borehole design effect analytical accounting (diameter, casing, cement bond);
- referenceless energy scale stabilization and calibration, gain control.
The digital gamma-ray spectral logging tool contains registration and processing electronic module, telemetry system and scintillator detector with a gamma-ray photoelectronic multiplier. The tool is equipped with full software for Vulkan, Gektor recorder and interpretation software for logging in open and cased boreholes.
The tool can be run with one-core and tree-core cable.
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Weight content measurements range, % Th U K |
(1-100)·10-4 (1-100)·10-4 0.1÷20 |
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Gamma-ray energy recording range, MeV |
0.06-3.0 |
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Measurement basic relative error, % |
up to 5 |
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Scintillator detector type |
NaI(Tl),CsI(Na), BGO |
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Energy resolution of gamma-ray line 660 KeV, % |
up to 12/14/15 |
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Energy channel quantity |
256 |
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Power supply voltage, V |
50-75 |
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Current consumption, milliampere |
up to 100 |
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Maximal operating temperature, °C |
120 |
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Maximal operating pressure, MPa |
60 |
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Downhole tool dimensions, mm diameter length |
60/73/76/90 up to 1200 |
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Weight, kg |
up to 8/10/15/20 |
*The tool is certified.