Exercise 2 Response to a kick Whilst drilling the 8 1/2" hole of the well, the mud pit level indicators suggest that the well is flowing. a. What action should the driller take? b. What action should the driller take if he was pulling out of hole at the time that the kick was recognised? c. What other indicators of a kick would the driller check for? When considering the above, also consider the sequence of operations and the possible misinterpretations of the indicators.
Answer (1)
When dealing with a kick during drilling operations, it's crucial to act quickly and correctly to ensure safety and control of the well. Here's a step-by-step guide to addressing the situation described:
a. Action to Take When the Well is Flowing:
Shut-in the Well: The driller should immediately shut-in the well to prevent further influx of formation fluids. This is done by closing the blowout preventer (BOP).
Monitor Pressures: Once the well is shut-in, begin monitoring the shut-in drill pipe pressure and the shut-in casing pressure. This helps in assessing the severity of the kick.
Notify the Team: Quickly inform the relevant personnel, including the rig manager and the well control specialist, about the situation.
Circulate Out the Kick: Use the established kill procedures, such as the Driller's Method or Wait and Weight Method, to circulate the unwanted fluids out of the well safely.
b. Action to Take When Pulling Out of Hole During a Kick:
Stop Operations: Cease pulling operations immediately and set the pipe back in the hole to the shoe (last casing).
Close the BOP: If not already shut-in, close the BOP to control the well and prevent further influx.
Monitor and Record: Record any changes in mud returns or pressures. Keep monitoring the pit volume and pressures to understand the well condition.
Consult the Well Program: Follow the pre-established kick procedures specific to the well program, including notifying all stakeholders.
c. Other Indicators of a Kick:
Increase in Pit Volume: A sudden increase in the mud pit level can indicate a kick.
Flow Rate Changes: An unexpected increase in the mud return flow rate.
Reduction in Return Mud Weight: Lighter mud returning to the surface can indicate gas influx.
Anomalous Pressure Changes: Unexpected changes in pressure inside the wellbore.
Drillers must remain vigilant for these indicators and understand that proper interpretation is vital to mitigate risks effectively. Training and drills are crucial in preparing the crew for such scenarios to minimize reaction time and ensure safety.
