caliper log


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caliper log

[′kal·ə·pər ‚läg]
(mining engineering)
A graphic record showing the diameter of a drilled hole at each depth; measurements are obtained by drawing a caliper upward through the hole and recording the diameter on quadrile paper.
References in periodicals archive ?
The company wells were drilled to hydrocarbon industry standards where lithology and down-hole logs, including resistivity, sonic, neutron density and caliper logs were recorded for all the formations drilled from surface casing to just below the Potash beds.