Gamma-Gamma Tool
High-Precision Density Measurement for Subsurface Investigations
The Gamma-Gamma Tool is a versatile density logging instrument equipped with two detectors at different spacings from a gamma radiation source. Designed to measure the apparent density of surrounding materials, this tool provides essential data for geotechnical, geological, and environmental applications.
- Long Spaced Density Detector (LSD): Spaced 48cm from the source, it offers the greatest depth of investigation, making it ideal for studying subsurface formations beyond immediate borehole influences.
- High Resolution Density Detector (HRD): Spaced 24cm from the source, it delivers high-resolution data for detailed analysis. However, it is more sensitive to borehole conditions such as linings or mud-cake.
Key Features
Specifications
- Dimensions: 2250mm (length) x 38mm (diameter)
- Weight: 12kg
- Maximum Temperature: 80°C
Logging Conditions
- Speed: 2–5 m/min (free-running logging)
Borehole Compatibility
- Diameter: Suitable for boreholes with diameters of 50–300mm*
- Environment: Works in dry or fluid-filled conditions
- Lining: Compatible with unlined or lined boreholes**
*For boreholes larger than 300mm, the tool can be run sidewalled with multiple passes on different sides of the borehole.
**In lined or cased sections, the tool provides qualitative density data.
The Gamma-Gamma Tool is an invaluable asset for precise density measurement, offering high-resolution data and adaptable functionality. Whether you’re conducting geological mapping, resource exploration, or geotechnical assessments, this tool ensures reliable and accurate results.
