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Dual Spaced Focused Resistivity Tool
This tool measures the resistivity of the materialsurrounding the borehole.
The Focused Resistivity tool provides resistivity logs with finer vertical resolution and a deeper depth of investigation than a Normal Resistivity tool.
Performance is also improved in higher conductivity mud, saline water and higher resistivity formations. The response of this log is a function of porosity, mineralogy and pore water quality.
In metal lined boreholes the resistivity can give qualitative information on the condition of the casing and may be used to identify areas of increased corrosion or encrustation.
Specifications
Logging Conditions
- 4 – 9 m/min
- Free running
Borehole Conditions
- Minimum diameter 50mm
- Fluid filled
- Unlined
Example focused resistivity log showing increased resolution over a normal resistivity tool