Safety Alert
Safety Alert 24 - Shallow Gas Blowouts, One Rig Lost
Safety Alert 24 - Shallow Gas Blowouts, One Rig Lost
- BSEE
- Safety Alert
- BSEE Safety Alert 24
- Emergency ResponseProcess Safety
- Loss of vessel stabilityMechanical failureWell control
- Drilling
- Blowout preventer
- Operational supervision
- Upstream oil and gas
- Offshore installation
Summary
This alert describes two shallow-gas blowouts on offshore drilling rigs: a jack-up capsized after evacuation, while a semi-submersible suffered riser-diverter damage and lost buoyancy. It records the operator’s planned changes to casing and liner placement, mud weights, bottom-hole assembly design, drilling surveillance and riser-diverter reliability.
Classifications: Loss of vessel stability; capsize; vessel stability.
Classifications: Mechanical failure; equipment failure.
Classifications: Well control; kick control; loss of well control.
Classifications: Drilling; well drilling.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Operational supervision.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Summary
The alert concerns shallow-gas blowouts, including the loss of one rig.
BSEE Safety Alert 24. Themes: emergency response, process safety.