Safety Alert
Dropped String – High Potential Incident Results from Pulling Against Closed BOP Pipe Rams
Dropped String – High Potential Incident Results from Pulling Against Closed BOP Pipe Rams
- IADC
- Safety Alert
- IADC Alert 08-10
- Control of WorkDropped Objects
- Dropped objectsMechanical failure
- DrillingPressure testing
- Blowout preventer
- Safety communicationWell-barrier testing
- Upstream oil and gas
Summary
An alert describes drill pipe parting and dropping into a well while the final stands were being pulled against closed BOP top pipe rams. Following a leaking cement-plug and casing pressure test, the driller assisted with disconnecting cementing equipment before resuming pipe removal without opening the rams.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Well-barrier testing; well barrier verification.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Summary
The alert concerns a dropped string after pulling against closed blowout-preventer pipe rams.
IADC Alert 08-10. Themes: control of work, dropped objects.