Production Dual (X-Y) Caliper

What Is Production Dual (X-Y) Caliper?

The Netssu’s Dual X – Y Caliper is run centralized in the Production Logging toolstring. The Caliper arm mechanisms set at 90° to each other to measure casing inside diameter in the X – Y axes. The Caliper assembly is fully collapsible down to tool diameter for running into and pulling out of hole.

Operating Principle

The caliper is spring loaded and follows tubing ID while running in hole. It opens fully on leaving the tubing to enter the casing. Each arm operates as an independent unit exerting a constant radial force in any casing diameter.
LVDT sensors protected within the main shaft measure by induction the position of the coupled collars external to the shaft. The position of the collar blocks are related to the tubing ID.

Applications 

• Determination of X and Y diameters at 90°.
• Measuring of casing deformation and major corrosion.
• Detection of scale build-up in casing or tubing.
• Correction of spinner derived fluid velocity for varying
• Casing or open hole completion diameter.
• Identifying ID to correlate with changes in holdup patterns.

For more information, please contact us.