OPERATIONAL PRINCIPLE
The caliper is spring loaded and follows the inside diameter of the tube when in the hole. It opens completely when leaving the casing to enter the casing. Each arm functions as an independent unit exerting a constant radial force in any housing diameter. Shielded LVDT sensors inside the main shaft accurately inductively measure the position of coupled collars external to the shaft. The position of the clamp blocks is linked to the identification of the tube.
Application
Determination of diameters open hole. Identification of ID to correlate with changes in holdup interfacing and tool combinations Simultaneous operation with other production records 1 3/16 UN 12 upper and lower thread. Compatible with Sondex and OPTIONS Springbow version for open hole Ultrawire™ (UW) toolbus or Memory toolbus (Mbus). Special heads to meet customer specifications. Extended arms to increase reach depending on the customer.
SPECIFICATION
PDC Telemetry XTU or UMT
Pressure (max) 105MPa
Temperature (max) 177°C
Measuring range 2″ – 9″ diameter
Resolution 0.015″
Accuracy 0.1″ < 150°C 0.2″ < 165°C 0.3″ <177°C
Voltage (nominal) 18VDC
Current <24mA
Length 952mm
Measuring point 9.75-11.25″(X) 6.75-8.25″ (Y)
Diameter 43mm
Weight 6.6 kg
Material Corrosion Resistance Throughout End Thread(Top/Bottom) 13/16″ 12 UN2A GO End Connector(Top/Bottom) Single 4mm Banana Connector.
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