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QL40-IP – Induced Polarization

QL40-IP Induced Polarization Borehole Example Data


The QL40-IP Induced Polarization probe combines a quadruple spacing normal resistivity tool and dual spaced induced polarization tool to measure the electrical resistivity, spontaneous potential and chargeability of rocks. A high chargeability response is an indication of the presence of metallic sulphides and oxides or cation-rich clays.

The QL40-IP is stackable within the QL (Quick Link) product line or it can be run as a standalone tool.


Operating Conditions

Borehole Fluid
[X] Water
[X] Mud
[_] Dry

[X] Uncased
[_] PVC Borehole
[_] Steel

[_] Required
[X] Not Necessary

Isolation Bridle
[X] Required
[_] Not Necessary

Features & Benefits

Specifications – Metric/English

Specification Metric Imperial
Diameter 43 mm 1.7″
Length 1.9 m 74.8″
Weight 9 Kg 19.8 lbs.
Max. Temp. 70ºC 158ºF
Max. Pressure 200 bar 2900 psi

Sensor: Stainless steel electrode
Chargeability: Measured over 10 windows per spacing
IP Resolution: 1.2 µV
IP Input Impedance: 1.4 MOhm
Cycle Timing: User defined 100 to 4000 ms (1 ms resolution)

Resistivity Range: 0.1 to 100,000 Ohm-m
Resistivity Accuracy: 1% Full Scale
SPR Range: 0.1 to 100,000 Ohm
SP Range: ± 18 V
SP Accuracy: ± 2.5 mV
SP Resolution: 0.5 mV

QL Stack Possibilities


QL40-IP Induced Polarization Probe Brochure
User Guide

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