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40GRP – Gamma + Resistivity

40GRP-1000-Header-Image

Description

The 40GRP-1000 combination probe is ideal for slimline, one-pass, hydrogeological studies, lithology work, uranium exploration, and general borehole formation data. The totally digital probe combination measures 16, 64 inch (0.4, 1.6 meter) normal resistivity, single point resistance, self-potential, and natural gamma. It operates with the newest LoggerSuite digital logging system and software.

The 40GRP-1000 is a standalone tool. The normal resistivity measurements, single point resistance, and self-potential measurements are designed for surveying open (uncased) fluid-filled boreholes. Gamma measurements can be taken in any borehole environment.

Applications

Operating Conditions

Natural Gamma can be used in any borehole conditions.

For all other measurements, the following conditions apply:

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

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

Centralization
[_] Required
[X] Not Necessary

Isolation Bridle
[X] Required
[_] Not Necessary

Features & Benefits

Specifications – Metric/English

Specification Metric Imperial
Diameter 43 mm 1.7″
Length 2.21 m 87″
Weight 8.8 Kg 19.5 lbs.
Max. Temp. 70ºC 158ºF
Max. Pressure 200 bar 2900 psi

 

Natural Gamma Sensor: Sodium Iodide Crystal
Gamma Range: 0 to 100,000 cps/API
Gamma Accuracy: 1%
Gamma Resolution: 0.02%

Resistivity Sensors: Stainless steel electrodes
Resistivity Range: 0 to 10,000 Ohm-m
Resistivity Accuracy: 1%
Resistivity Resolution: 0.02%

SPR Range: 0 to 10,000 Ohms
SPR Accuracy: 1%
SPR Resolution: 0.02%

SP Range: ± 1,500 mVDC
SP Accuracy: 1%
SP Resolution: 0.04%

Documentation

Data Sheet for 40GRP Probe
User Guide

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