What is Tertiary Well Control?

by DrillingFormulas.Com on December 29, 2009

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… read them below or add one }

Mustafa March 29, 2012 at 10:41 pm

Thank you very much for useful informations


Mustafa March 29, 2012 at 10:44 pm

Please I need Bottom Up calculations

Thank you


DrillingFormulas.Com March 31, 2012 at 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 July 12, 2012 at 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 at 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 at 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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