Why Was This Well Control Situation Happened?

You need to watch the VDO below. It demonstrated the situation before the blowout was occurred.

These are some possible root causes which contributes to this situation.

why-this-well-control-happen

  • Improper hole fill
  • Lack of properly tracking the trip sheet
  • Incompetent crew
  • Full Openning Safety Valve and IBOP were not properly prepared to stab in. The crew were looking at them when they found out that the flow was coming up from the drillstring.
  • No float valve in the drillstring
  • Take to long to shut the well in. You can see only 4 minutes before the massive blowout was blowing on the rig floor.
  • Lack of well control knowledge and training
  • Possible to swab the well in
  • What do you think about this well control situation?

Is this preventable?

Please feel free to leave us some comments below.  Additionally, you can learn a lot of well control knowledge from our website – Well Control

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6 Responses to Why Was This Well Control Situation Happened?

  1. Jaime Valbuena says:

    Why BOP was not closed before Crew Work with elevator ?
    the BOP was damaged?
    I Saw that crew didn’t had a contingency plan and fault of trained to them for this kind Of
    cases

  2. Francis Mahon says:

    From video surely initial flow at least was up the annulus so was BOP in place?!!

  3. Michael says:

    From the video it is quite evident that there was a float in the string since there wasn’t any mud blowing up through the pipe but from under the rotary table. My only thought from what I see in the video is why wasn’t the well shut in at the first sign that mud was coming up through the rotary table? Why attempt to kelly up since the drill string float WAS holding. Shut the well in first then kelly up. It is pretty evident that a trip sheet wan’t in use or was misinterpreted by the crew. In my opinion ALL blowouts are preventable, but proper training is what keeps a well control situation from turning into a disaster!

  4. Rick Gade says:

    Hello,

    I only dissagree with one of the possible root causes mentioned above. There did not seem to be any fluid coming out of the drill pipe. Therefore I think there was at least one float in the drillstring.

    Also, is there any way to search for a subject. I am curious about gas compressibility coeeficient for different pressures and temperatures.

    Cheers,
    Rick Gade

  5. Djamel says:

     Improper hole fill
     Lack of properly tracking the trip sheet
     Incompetent crew
     Full opening Safety Valve and IBOP were not properly prepared to stab in. The crew were looking at them when they found out that the flow was coming up from the drill string.
     No float valve in the drill string
     Take too long to shut the well in
     Lack of well control knowledge and training
     Possible to swab the well in

  6. Rahul says:

    Why did they not actuate the BOP ? Was it not in place ? The Annular Ram ?

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