Designed for direct determination of uranium content in wells at hydrogen-type uranium deposits by fission neutron logging and gamma-ray logging methods.
The use of the equipment is regulated by the "Fission neutron logging instruction for the study of hydrogen deposits” / Comp. G.I. Ganichev, V.A. Zolotnitsky, A.P. Koshelev et al. - L.: NPO "Rudgeofizika", 1986. The downhole tool is to be run with VULCAN V3 log recorder or similar.
Operates with one-core or three-core logging cable.
SPECIFICATIONS
| Range of measurement of uranium content, % | 0,005-5 |
| Range of measurement of prompt fission neutrons, n/s | 0-6х104 |
| Range of measurement of water-saturated porosity, % | 0-40 |
| Thermal neutron lifetime measurement range, μs | 50-2500 |
| Measurement range of neutron yield from a pulsed neutron generator, n / s | 2х107 – 2х109 |
| Uranium content measurement error, % | 10 |
| The error in measuring the lifetime of thermal neutrons, % | 2 |
| The error in measuring the neutron yield from a pulsed neutron generator, % | 2 |
| Uranium detection threshold, % | 0,003 |
| Range of gamma radiation exposure dose rate, μR / h | 5-10000 |
| The relative error of measuring the exposure dose rate of gamma radiation, % | 10 |
| Conversion factor | 115±3 |
| «Dead time» of the recording path, μs | 3 |
| Downhole tool supply voltage, V | 150 |
| Maximum logging speed, m / h | 40-60 |
| Maximum operating temperature, °С | 80 |
| Maximum hydrostatic pressure, MPa | 20 |
| Length, mm | 3200 |
| Diameter, mm | 53-62 |
| Weight, kg | 20 |
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