01 - wc overview, risk management & barriers
TRANSCRIPT
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7/25/2019 01 - WC Overview, Risk Management & Barriers
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IADC WellSharpSupervisor Level
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Short term effects...?
NEGATIVE IMPACTS OF well control events?
Long term effects?
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7/25/2019 01 - WC Overview, Risk Management & Barriers
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WHAT IS WELL CONTROL ABOUT?
What is the main control mechanism available when we drill oil and gas wells?
What happens when the main control mechanism fails?
Why does this happen?
What can I do to prevent it from happening?
What do I need to know about things that happen in the well?
What precautions should I be aware of in relation to well control?
WELL CONTROL TRAINING
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BARRIERS AGAINST HUMAN ERROR (Risk Analysis Models)
The Swiss Cheese model of accident causation is a model used in riskanalysis and risk management.
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Examples of barriers against Human Error:
Procedural barrieres
Checking drilling mud weights.
Trip sheet
Challenging response procedures (being told to dosomething you know is wrong).
Setting alarms correctly.
Following correct testing procedures and intervals.
HUMAN ERROR
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Do Check
To ensure you have just done theright thing
Requires actions from memory
Use after a crisis (Well Shut-In)
Read Do
Pre-planned use
To ensure no critical steps aremissed
Use before a critical activity(Handover, Tripping)
RISK MANAGEMENT (Check Lists)
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7/25/2019 01 - WC Overview, Risk Management & Barriers
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BARRIERS
Drilling, coring and tripping with shearable string
Stab-in Safety Valve
Primary Barrier ________
Secondary Barrier ________
Blue Red
Blue
Red
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A Well Barrier Element is
Well Barrier envelope is ...
BARRIERS
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7/25/2019 01 - WC Overview, Risk Management & Barriers
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Lets have a break?