dual spaced focused resistivity
The QL40 DLL3 tool provides a time multiplex dual spacing focused resistivity measurement with two different depths of investigation, Shallow LL3-S and Deep LL3-D resistivity in Ohm.m.
It is characterised by an excellent vertical resolution in comparison with the traditional Normal Resistivity tool that makes it ideal for bed-boundary and thickness analysis. The QL40 DLL3 can be operated as a stand-alone probe with an Isolation bridle and bottom plug or can be stacked with other tool subs. The QL40 DLL3 is compatible with Matrix, ALT logger and Scout acquisition systems.
Temperature – Pressure
200 bar (2900 psi)
Diameter – Length
43 mm (1.7”) w/ neoprene insulator
2.75 m (108,2”)
14 kg (30.9 lbs)
Time Multiplex dual spacing focused resistivity LL3-S & LL3-D in [Ohm.m]
Potential value on measuring and guard electrodes in [V]
Current value on measuring and guard electrodes in [mA]
QL40 IS 1 (mono-MS1)
QL40 IS 2 (mono-GO1)
QL40 IS 4 (4 conductor-GO4)