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 . . .
Subscribe to view the Content