Compensated Neutron Tool 2009 All Rights Reserved-Century Wireline Services
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 
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