| FEATURES |
| Relative porosity indication range
equivalent to 0 - 60% sandstone porosity |
| Small diameter permits use in drill-pipe
and narrow casing |
| Option of natural gamma for correlation |
| Option of CCL for casing inspection |
| MEASUREMENTS |
| Neutron |
| Natural gamma |
| Casing-collar locator |
| APPLICATIONS |
| Water |
Location of aquifer and aquitard
Porosity/Hydrogen Index indication |
| Engineering/Minerals |
Lithology
Correlation between open and cased-hole logs
Strata correlation between wells |
| OPERATING
CONDITIONS |
| Borehole type |
Open/cased, water-filled (qualitative
measurements are possible in air-filled boreholes) |
| Centralisation |
excentralised with bowspring |
| SPECIFICATIONS |
| Diameter |
38mm |
| Length |
2.08m |
| Weight |
8kg |
| Max. temperature |
70ºC (extended range available) |
| Max. pressure |
20MPa (extended range available) |
| Neutron detector |
Type: 3He
proportional counter |
| Source |
241Am-Be |
| Range |
0 to 60% apparent sandstone porosity |
| Source-detector spacing |
45cms |
| Natural-gamma detector |
50mm x 25mm NaI(Tl) scintillation
crystal (larger sizes available) |
| SALES
INFORMATION |
| Probe |
| 25 015 000 |
Neutron probe with source holder
and source transport container |
| 25 016 000 |
includes natural gamma |
| 25 017 000 |
includes natural gamma and CCL |
| Accessories |
| 30 005 000 |
Neutron source (37GBq 241Am-Be) |
| 20 091 000 |
Field neutron calibrator |
| 20 070 000 |
Natural-gamma API calibrator without
source |
| 30 010 000 |
3.7MBq 137Cs source for natural
gamma calibrator |
