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Mount Sopris - Model QL40-CAL -3-Arm Caliper Probe Records
The QL40-CAL Caliper probe 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 well logging probes.
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- Borehole diameter measurement
- Borehole volume calculation before borehole completion, cementation
- Fracture and cavity localization
- Rock integrity evaluation
- Often used in the implementation of environmental correction equations for other logs
Borehole Fluid
- Water
- Mud
- Dry
Casing
- Uncased
- PVC Borehole
- Steel
Centralization
- Required
- Not Necessary
- Calibrated measurement of borehole diameter in inches, centimeters, or millimeters
- Can be combined with other well logging tools of the QL product line or operated as a standalone tool
- Operates on any standard wireline (mono, 4 or 7 conductor, coax)
- Easy exchangeable caliper arm lengths and wear tips
- Sensor: Micro-processer controlled potentiometer
- Standard Arms: 50 to 406 mm/ 2 to 16 inch borehole diameter
- Extended Arms: up to 736 mm/ up to 29 inch borehole diameter
- Accuracy: 1 mm
- Resolution: 0.5 mm
QL Stack Possibilities
- QL40CAL + QL40GR (Gamma) + QL40MGS (Magnetic Susceptibility): Mining, Exploration
- QL40CAL + QL40GR (Gamma) + QL40OBI (Optical Televiewer): Exploration, Bedding Planes, Fractures
- QL40CAL + QL40GR (Gamma) + QL40ABI (Acoustic Televiewer): Exploration, Bedding Planes, Fractures
- QL40CAL + QL40GR (Gamma) + QL40RES (Resistivity)+ QL40FTC (Fluid Res, Temp): Hydrogeologist’s Tool, Groundwater exploration and assessment