The UPCT universal perforating and correlation tool is a gamma ray—casing collar locator (GR-CCL) depth correlation tool for perforating operations. It is compatible with any type of detonator, including radio frequency–immune detonator systems on both polarities (addressable switch).
The depth correlation provided by the 1 11/16-in [4.29-cm] UPCT tool is used to precisely position perforating guns and other through-tubing explosive devices. The rugged design and robust electronics of the UPCT tool enable running it on the same string as the perforating guns without requiring a shock absorber sub.
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