CITM Casing Inspection Tool

CITM

Casing Inspection Thickness Measurement

CBG-5The CITM tool is used for inspecting water well casings from 12” to 30” diameter.  Based on the ICL Induction Collar Locator, it is the only water well casing inspection tool capable of simultaneously measuring Casing Weight, Internal Casing Diameter, Collars, Centralizers, Perforations and Internal/External Corrosion.  During the casing inspection procedure, the tool provides information on casing irregularities often missed by video surveys.

The tool uses oscillating magnetic fields to set up and measure Remote Field Eddy Currents in the casing via a combination of transmitter and receiver coils at two separate frequency ranges.  For casing inspection, the phase shift is measured between a transmitter and receiver coil, operating at low frequencies of 10-30 Hz.  A differential phase measurement between the two receiver coils provides a highly resolved view of the casing wall thickness.

A high frequency signal of 50-100KHz is used to provide an amplitude measurement between the transmitted and received signal which provides the internal casing diameter or caliper.  The casing outside diameter can then be calculated using the wall thickness and ID measured values, providing a sectional view of the casing.

 

CITM

Casing Inspection Thickness Measurement

CBG-5The CITM tool is used for inspecting water well casings from 12” to 30” diameter.  Based on the ICL Induction Collar Locator, it is the only water well casing inspection tool capable of simultaneously measuring Casing Weight, Internal Casing Diameter, Collars, Centralizers, Perforations and Internal/External Corrosion.  During the casing inspection procedure the tool provides information on casing irregularities often missed by video surveys.

The tool uses oscillating magnetic fields to set up and measure Remote Field Eddy Currents in the casing via a combination of transmitter and receiver coils at two separate frequency ranges.  For casing inspection, the phase shift is measured between a transmitter and receiver coil, operating at low frequencies of 10-30 Hz.  A differential phase measurement between the two receiver coils provides a highly resolved view of the casing wall thickness.

A high frequency signal of 50-100KHz is used to provide an amplitude measurement between the transmitted and received signal which provides the internal casing diameter or caliper.  The casing outside diameter can then be calculated using the wall thickness and ID measured values, providing a sectional view of the casing.