Multifinger Imaging Tool 40-Finger MIT


Provides radial measurements for advanced crosssectional analysis of tubular corrosion


  • Monitoring internal casing corrosion or scale buildup
  • Evaluation of drilling wear
  • Identification of split, parted, or deformed casing
  • Evaluation of deformation caused by geomechanical factors

Features and Benefits

  • The 40-finger MIT is combinable with other Ultrawire* tools for simultaneous measurements and increased operational efficiency.
  • When adequately centralized externally, the MIT is suitable for all well deviations up to and including horizontal, making the MIT versatile in its application.
  • Optional extended finger lengths enable the MIT to measure a broad range of casing sizes.
  • The combination of statistical analysis using WIPER software and 3D data analysis using WIVA software provide both graphical and empirical analysis of acquired data to best reveal the true condition of the casing.

Tool Description

The 40-finger MIT is used to detect very small changes in the internal surface of tubing or casing with a high degree of accuracy. The tool can be run with extended-length fingers to increase its measurement range. Additionally, the 40-finger MIT can be run in combination with other Ultrawire well-integrity instruments and production logging tools either on single-conductor wireline requiring surface power and control or on slickline requiring battery power, downhole memory, and control. 

When the tool is run in hole, the fingers are closed to prevent damage. At logging depth a motor activated from the logging system or by the memory tool opens the fingers. As the tool logs up, it continuously measures the surface condition of the pipe. An inclinometer in the tool indicates the finger positions relative to the high side of the pipe so that features can be oriented correctly during data processing.

MIT data can be used to generate 3D images of pipe condition using Sondex’s visualization software, Well Integrity Visual Analysis (WIVA). Sondex’s Well Integrity Processing, Evaluation & Reporting (WIPER) software can also be used for statistical analysis of the pipe condition.