FORMATION Density Sonde

SPECIFICATIONS

FDS TECHNICAL SPECIFICATIONS
System Requirement ALT logger
Diameter 50 mm
Length 3.35 m (with source holder)
Weight 30 kg
Max. pressure 200 bars = 2900psi
Max. temp. 70º C
Power supply 80-140 V
Current 45mA
Detectors NaI(Tl)
Source Cs1 3 7 100mCi or 125mCi
Caliper range 60 - 300 mm (caliper extensions possible)
Arm tension 3 -10 kg (depending on caliper)
Logging speeds 5m/min @ 1cm sample rate
Logging Mode Side-walled

APPLICATIONS

The FDS probe employs a Cs137 radioactive source to record backscattered radiation from the formation. This probe can be used in dry or water filled, cased or uncased wells A natural gamma detector at the top of the tool measures natural gamma radiation.
There is a single arm caliper to measure the borehole diameter and push the probe to the sidewall of the well. From this probe bulk density, rock porosity as well as elastic parameters and lithology can be determined.