AnTech Ltd, has introduced a new coiled tubing (CT) logging head. The new logging head has a remotely operated emergency electrical disconnect that makes it possible to carry out a controlled release of the Logging Head from the CT.

Running electric logging tools improves the effectiveness of many CT operations. These operations require an electric cable to be run inside of the CT. AnTech’s CT logging head provides a safe and secure means of connecting the logging tools to the CT and the electric line.
The new electric release disconnect version makes the logging head more robust and eliminates the possibility of shock or pressure spikes activating the release. It works by applying an electric current to the logging head.

A sustained flow of current (in this case approximately 2 minutes) activates the release, leaving a fishing neck exposed at the top of the remaining tool. It will not inadvertently activate due to pressure or shock because it is not a weak point until the electric current is activated. In addition, it cannot be activated by operating other electrical tools in the string because there is a protective circuit built into the electric release that requires a sustained reverse current to activate the release.

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