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The QL40CAL

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The QL40CAL sub records a single continuous borehole diameter log by means of three mechanically coupled arms in contact with the borehole wall. The 3 arm caliper measurement is a useful first log to determine the borehole condition before running other more costly probes or those containing radioactive sources.

The QL40CAL sub records a single continuous borehole diameter log by means of three mechanically coupled arms in contact with the borehole wall. The 3 arm caliper measurement is a useful first log to determine the borehole condition before running other more costly probes or those containing radioactive sources. Opening and closing of the caliper arms is surface controlled from the MATRIX LoggerSuite application, allowing the probe to be run into the borehole with the arms closed. Once positioned at the bottom of the borehole, the caliper arms are opened, and the spring-loaded arms respond to borehole diameter variations as the probe is moved up the borehole.

Specification: The QL40CAL

Probe
Diameter (mm)

Country of Origin

Winch
Country of Origin

Drilling services
Hole Depth (m)

Country of Origin

Camera
Country of Origin

Temperature (max in °C)

Pressure (psi)

Diameter (mm)

Drilling Rigs
Country of Origin

Hole Depth (m)

Inspection Service
Country of Origin

Hole Depth (m)

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Weight (Kg)

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