The Caliper Log is a continuous profile of the borehole wall showing variations in borehole diameter. Caliper Logs can be recorded using 4-arm instruments.
These measurements and their average accurately define the hole shape and size, especially in deviated and elliptically shaped holes.
Single sensor calipers measure one diameter of the hole and are combinable with all openhole logging instruments.
- Determine borehole profile for cement volume calculations
- Provide information on build-up of mudcake adjacent to permeable zones
- Determine hole size for fluid flow calculations, particularly in irregular boreholes
- Locate packer seats in open hole