Safety Alert
Safety Alert 66 - Blowouts from Surface Casing, Conductor Casing Annulus
Safety Alert 66 - Blowouts from Surface Casing, Conductor Casing Annulus
- BSEE
- Safety Alert
- BSEE Safety Alert 66
- Hydrocarbon ReleaseProcess Safety
- Hydrocarbon releaseWell controlWell integrity
- Drilling
- Blowout preventer
- Operating and work procedures
- Upstream oil and gas
- Vessel
Summary
This alert describes delayed shallow gas flows between conductor and surface casing after cementing, sometimes requiring abandonment or vessel relocation. It attributes the flows tentatively to reduced cement-column hydrostatic head and outlines logging, casing movement, slurry selection, returns monitoring and conditional retention of blowout-preventer capability.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Well control; kick control; loss of well control.
Classifications: Well integrity; well life cycle integrity.
Classifications: Drilling; well drilling.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Operating and work procedures.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Vessel; aboard ship; onboard vessel.
BSEE Safety Alert 66. Themes: hydrocarbon release, process safety.