Well Control – Bullheading

Well Control - Bullheading

Bullheading. If normal well killing techniques with conventional circulation are not possible or will result in critical well control conditions, bullheading may be considered. Mud/influx are displaced/squeezed back downhole into the weakest exposed open hole formation.

Bullheading may be considered when the following well control situations occur:

  • H2S influx cannot be handled safely by rig personnel and equipment.
  • A combined kick and losses situation is experienced (downhole annulus bullhead rates must exceed the gas migration rate to ensure the situation does not deteriorate further).
  • Kick . . .

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