Safety Alert
Driller Inattention Results in Dropped Blocks
Driller Inattention Results in Dropped Blocks
- IADC
- Safety Alert
- IADC Alert 12-28
- Dropped ObjectsHuman Factors
- Dropped objectsMechanical failure
- Drilling
- Wire rope
- Upstream oil and gas
Read at IADCOpens the publisher’s page on iadc.org
Summary
During tripping, washing and reaming in a tight hole, a bridge caused the blocks to settle over the top drive and slacken the drill line. When the bit broke through, the blocks and top drive fell freely, loading and parting the line. The equipment then fell to the rig floor.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Wire rope; steel wire rope.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Summary
The alert highlights dropped-object risks associated with driller inattention.
IADC Alert 12-28. Themes: dropped objects, human factors.