X-Y Caliper Tool – Digital with Temperature
Measures borehole size and provides two independent caliper curves simultaneously
Applications
- Internal-wellbore size measurement
- Casing and tubing evaluation
- Openhole-size measurement
- Defect detection such as scale build up, corrosion, or deformation
- Identification of completion items
Features and Benefits
- Accurate measurement of two independent wellbore diameters
- Applicable in openhole or cased-hole environments
Tool Description
The Weatherford X-Y caliper tool measures the size of the borehole and provides two independent caliper curves simultaneously. Two sets of opposing arms, arranged in an X-Y configuration, measure borehole irregularities such as oval shapes, large washouts, or extreme restrictions more accurately than conventional 2- or 3-arm caliper tools. The tool may be used in either openhole or cased-hole logging.
Specifications
Ratings and Dimensions
Outside diameter | 3.5 in. (88.9 mm) |
Length | 70.08 in. (1,780.03 mm) |
Weight | 95 lb (43 kg) |
Max. temperature | 350°F (177°C) |
Maximum pressure | 18,500 psi (127.5 MPa) |
Casing/tubing OD | Min: 4.5 in. (115 mm) |
Tensile strength | Tension: 12,500 lb |
Measure points | X: 16.1 in. (408.94 mm) |
Borehole Conditions
Tool positioning | Centralized |
Logging speed | Recommended: 30 ft (9.1 m)/min |
Hardware Characteristics
Sensor type | Linear motion resistive potentiometer |
Transmission type | Digital telemetry |
Data rate | 20 frames per second |
Combinability | GR, CCL, additional telemetry tools |
Connections | Top: GO pin box |
Electrical
Voltage/current | 120 V DC at 40 mA |
Calibration
Primary and wellsite | Calibration fixture 035-FH099-0070 |
Measurements
Principle | Mechanical actuation of linear motion potentiometers |
Range | 4.5 to 30 in. (115 to 762 mm) |
Vertical resolution | 0.3 in. at 30.0 ft/min |
Accuracy | +/- 0.25 in. (+/- 6.4 mm) |
Primary curves | Borehole size in X and Y axis |
Secondary curves | Head voltage |
Reach out to optimize reservoir performance
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