Six-Arm Caliper
GOWell’s Six-Arm Caliper tool has independent arms measuring 6 radii of the borehole wall. The 6-arms are spaced at 60 degrees leading to a more accurate measurement of the borehole cross-section compared to 2 or 4-arm tools.
The tool has six independent arms measuring an accurate set of radii via 6 electrical sensors. Borehole diameter is measured by the three sets of opposite arms.
Features
- Fully combinable with Gallop range of Open Hole tools
- Covers a wide range of borehole sizes up to 22 inches
- Correction for tool eccentricity via elliptical or chord methods
- Borehole profile display
Applications
- Determines an accurate profile of the borehole cross-section
- Calculates Borehole and Annulus hole volumes
- Analysis of borehole failure – breakout, key-seat and washouts
- Evaluate in-situ stress field
