CCL (Casing Colar Locator Tool)

Deployment	Borehole
Log Name	CCL
Measured Property	Volume of magnetisable materials around the sensor
Sensor Type	Induction Coil
Units
SI	V
Oil Metric	mV = 10^-3V
Oil Field	mV = 10^-3V

Applications

Depth Matching between cased-hole logs and well schematic based on location of tubing/casing collars
Locating magnetisable completion elements along the borehole:
- Tubing/casing collars
- Tubing/casing deformation
- Tubing/casing defects (perforation or leaks)
- Tubing/casing defects bottom
- Packer elements

There are two modifications of the tool: CCL Passive and CCL Active

$\begin{array}{l}\displaystyle CCL = k \cdot H \cdot LSPD\end{array}$

$\begin{array}{l}\displaystyle CCL = k H\end{array}$