The Electromagnetic Thickness Tool is designed to measure the casing damage based on the working principle of Remote Field Eddy Current. The tool includes multiple sensors installed on the 12 extensible arms which are pushed against the pipe wall to measure the remaining thickness of casing wall.

· Casing collar identification

· Casing inner/outer wall damage identification

· Casing wall thickness

· Perforated well interval identification

· Dual coil receiver with high sensitivity and signal-noise ratio

· Extensible spring arms closer to wall for better measuring performance

· Small temperature drift, strong anti-interference capability