Casing Collar Locator

In Stock

List Price
SAsxxxxx[xx]-[-x x/x]
Manufacturing Lead Time:
6-8 weeks if not in stock

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Short Description

Grounded passive (shooting) CCL to detect casing collars and perforations in tubing or casing.

Grounded passive (shooting) CCL to detect casing collars and perforations in tubing or casing.


The casing collar locator (CCL) is a magnetic device which locates collars, joints, packers, centralisers, etc. The CCL detects changes in metal volume as it moves through tubing or casing. The field around the magnets, which are located within the tool, is disturbed and induces a low-frequency voltage in a coil mounted between the magnets.

Passive CCLs are considered shooting CCLs.


  • Finds the location of casing or tubing damage
  • Confirms perforation depths or intervals
  • Operates concurrently with other tools
  • Compatible with many surface systems
  • Depth correlation
  • Can be run with perforating services and free point back off


We recommend that non-grounded coil CCLs are used with Free Point tools and grounded coil CCLs are used for perforating.

However, grounded and non-grounded CCLs can be used with Free Point tools.



CCL Type Shooting (non-powered) CCL grounded
Tool Size  3/4 in (19.05 mm) to 4 1/2 in (114.3 mm) 
Top Connection  GO BX (1 3/16 in - 12 UN), GO BX (13/16 in - 16 UN), AES BX (1/2 in - 20) 
Bottom Connection  GO PN (1 3/16 in -12 UN), GO BX (13/16 in - 16 UN), GO BX (1 3/16 in - 12 UN), AES BX (1/2 in - 20), QC BX (1 5/8 in) 
Length  10.64 in (270.26 mm) to 22.23 in (564.64 mm) 
Weight  0.8 lbs (0.36 kg) to 87.8 lbs (39.83 kg) 
Pressure Rating 21 KPsi (145 MPa)
Temperature Rating 500°F (260°C)
Coil Resistance  0.2K Ω to 6.0K Ω 
Voltage Rating  450V DC 
Kit Specialised kits available for each SKU. Please see the Short Description to find the right kit for your selection.


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