What is Tertiary Well Control?

Can you imagine if primary and secondary well control are failed? Well is flowing all the time so how can we deal with this situation? For this situation, you must use Tertiary Well Control.

Tertiary Well Control is specific method used to control well in case of failure of primary and secondary well control. These following examples are tertiary well control:

    • Drill relief wells to hit adjacent well that is flowing and kill the well with heavy mud. Note: this case you can study from PTTEP Austraila Blow Out Incident. They use this method to control the well that was firing on the platform.
    • Dynamic kill by rapidly pumping of heavy mud to control well with Equivalent Circulating Density (ECD)
    • Pump barite or gunk to plug wellbore to stop flowing
    • Pump cement to plug wellbore

Reference book: Well Control Books

6 comments… add one

  • Mustafa Mar 29, 2012, 10:41 pm

    Thank you very much for useful informations

  • Mustafa Mar 29, 2012, 10:44 pm

    Please I need Bottom Up calculations

    Thank you

    • DrillingFormulas.Com Mar 31, 2012, 7:05 am

      Basically, you need to know the annular volume and then you divide by the SPM. You will get the bottom up time.

  • mahmood Jul 12, 2012, 3:07 pm

    Thank you very much for useful information.
    Please “if possible give us some questions about IWCF course by pdf file format

  • Karthik May 5, 2015, 2:13 pm

    Can you explain how will you carry out above procedures described as tertiary well control when the secondary (BOP) has failed??

    • DrillingFormulas.Com May 7, 2015, 5:38 am

      Drilling relief well is generaly a method to drill to intersect a blow out well. It is very specific to each project so I don’t have the procedure for this.

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