The Compensated Neutron tool contains a two detector, neutron
system which uses a 5.0 Curie, Am241Be source to record neutron
porosity of the formation. Additionally, the tool also records short
and long neutron counts, natural gamma, temperature and a deep
guard resistivity.
FEATURES
Properties Measured
1. Natural Gamma:
2.9 x 10.2 cm (1.125 x 4.5 in.)
NaI Scintillation
Offset: 30.5 cm (12 in.)
2. Deep Guard Resistivity:
Upper guard, measure and lower guard
electrodes, 3 m (10 ft.)
Offset for measure electrode:147.3 cm (58 in.)
3. Neutron Detector, Far Spacing:
He3 5.1 x 25.4 cm (2 x 10 in.)
61cm (24 in.) spacing
Offset: 218.4cm (86 in.)
4. Neutron Detector, Near Spacing:
He3 2.9 x 10.1 cm (1.125 x 4.0 in.)
32.4 cm (12.75 in.) spacing
Offset: 241.3cm (95 in.)
5. Temperature Measurement:
Thermal temperature on needle sensor.
Offset: 265.4 cm (104.5 in.)
6. Radioactive Source:
5 Ci AmBe 241 neutron source, bullplug
Offset: 276.9 cm (108 in.)
Length: 282 cm (111 in.)
Temperature: 85 C (185 F)
Diameter: 5.1 cm (2.0 in.)
Pressure: 232 kg/cc (3300 PSI)
Weight: 16.4 kg (36 lb.)
Logging Speed: 9 m/min. (30 ft./min.)
Tool Voltage Required: 70 VDC
TOOL# 9075
