The Geoline digital natural gamma ray sonde can be used on its own or in combination with other Geoline sondes for correlation

Specifications

• Weight:3.1 kg
• Length:0.7 m
• Diameter:38 mm
• Detector (Nal):50 or 25 mm
• Max pressure:20 Mpa
• Max temperature:80 deg C

The caliper probe can be used on its own or in combination with other Geoline sondes or with a second caliper sonde to provide a low cost four arm caliper

Specifications

• Weight:4.0 kg
• Length:0.7 m
• Diameter:38 mm
• Max pressure:20 Mpa
• Max temperature:80 deg C
• Range:45 mm - 350 mm

This combination sonde is suitable for quantitative formation density measurements in uncased holes.

Specifications

• Weight:18/24 kg
• Length:1.8 m
• Diameter:60 mm
• Detectors (Nal):2 x Nal crystals with 38 & 15 cm spacing
• Source requirement:Typically 100 Mci 138 Cs
• Density range:1-3 gm
• Max pressure:20 Mpa
• Max temperature:80 deg C

Measurements	Applications
Long spaced density:gm/cc Short spaced density:gm/cc Natural gamma:Api Caliper:mm Borehole volume:cubic meters	lithology identification Rock density measurement Bed boundary Ground compaction Location of fractures, caving zones and cementation verification

The digital resistivity sonde can be used on its own or in combination with other Geoline sondes for efficient logging and correlation

Specifications

• Weight:7.0 kg
• Length:2.2 m
• Diameter:42 mm
• 64"N & 16"N
• Resistivity range:1 to 10 000 ohmm
• SP range:-2.5v to +2.5v
• Current return:Cable armour
• Measure return:Bridle electrode
• Max pressure:20 Mpa
• Max temperature:80 deg C

The Temperature-Conductivity probe can be used on its own or in combination with other sondes

Specifications

• Weight:2.0 kg
• Length:0.7 m
• Diameter:38 mm
• Temperature range:0-80 deg C
• Accuracy:50 to 50 000 microS/cm - +/-2.5% @ 500 microS/cm
• Max pressure:20 Mpa
• Max temperature:80 deg C
• Range:45 mm - 350 mm

• High-speed microprocessor controlled digital communication - for efficient data acquisition
• Stacking capability - probe combinations tailored to requirements (saving time and money)
• Variable resolution - allows for measurements of up to 32-bit resolution
• Variable sampling rate - control over vertical resolution
• Down hole digital signal processing - accurate and stable calibrated measurements
• Digital communications - no loss of accuracy in cable transmission
• Microsoft Windows data acquisition software - fully compatible with industry standard
• Single board in most sondes - increased reliability, easier spares control and maintenance
• Short and long spaced density - spacing of 15 and 38 cm respectively
• Tungsten collimation - for reduced background scatter
• Three point calibration - for accurate bulk density