Case Studies

  • Shorted Seal Blocks

    Shorted Seal Blocks

    Possible Scenario:

    After the BHA has been pumped down and current has been applied to the setting tool, a common error is having a short circuit. This short circuit will most likely make it impossible to set the plug and can interfere with firing the guns. In the case of a short circuit, the BHA should be pulled out of hole to analyze. In this specific scenario, the short circuit is caused by moisture in the seal block, leading to a short.

     

    Analysis:

    After pulling the BHA, and disarming the guns, it should be inspected to find the cause of the short circuit. The BRT and gun string should be metered if there is no obvious cause of the short circuit. The quick change and seal block should be removed and inspected. In this case, the seal block would show a short, so it should be torn down and the source of the short should be identified.

     

    Resolution:

    After the cause of the error is identified, the entire crew should be made aware of the issue and how to avoid it in the future. The seal block should be torn down completely, cleaned, dried, and reassembled after every stage. All members of the crew should be reminded of the importance of all electrical connections being clean and completely dry before reassembling the components.

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