Safety Alert
Inattention Allows Traveling Block to Strike Crown
Inattention Allows Traveling Block to Strike Crown
- IADC
- Safety Alert
- IADC Alert 02-02
- Line of FireMachinery and Equipment
- Dropped objectsMechanical failure
- Well intervention
- Evacuation, escape and rescue
- Upstream oil and gas
Summary
During tubing retrieval on a truck-mounted rig, the travelling block struck the derrick crown, severing the drill line and dropping the block and elevator equipment onto the rig floor. Impact caused tubing to part and fall into the well. Contract employees evacuated before contact, and the well was immediately secured.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Well intervention; workover; well servicing.
Classifications: Evacuation, escape and rescue; EER; escape and rescue.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Summary
The alert concerns a traveling block striking the crown after operator inattention.
IADC Alert 02-02. Themes: line of fire, machinery and equipment.