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Casing Collar Locator

Casing Collar Locator

Production logging depth control

Part of BHGE's Production Logging suite of products, Casing Collar Locators (CCL) provide depth control.

Depth control from BHGE

  • BHGE's Casing Collar Locator (CCL) responds to changes in metal volume, such as pipe collars and perforations.

    As the tool passes a collar, or change in metal volume, lines of magnetic flux between two opposing permanent magnets are disturbed, causing a low frequency voltage or Electro Magnetic Field (EMF) to be induced in a coil mounted between the permanent magnets. Finally the signal is converted by a voltage-controlled oscillator for recording in the Ultrawire™ section of the tool.

    • The CCL can be combined with other Ultrawire production logging tools
    • Depth control in casing or tubing
    • Location of casing or tubing damage
    • Confirmation of perforation depths or intervals

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