Safety Alert
Lack of Inspection Procedures Results in Dropped Blocks
Lack of Inspection Procedures Results in Dropped Blocks
- IADC
- Safety Alert
- IADC Alert 12-12
- Dropped ObjectsInspection and Maintenance
- Dropped objectsMechanical failure
- Drilling
- Wire rope
- Upstream oil and gas
Read at IADCOpens the publisher’s page on iadc.org
Summary
During tripping into a well, the driller lost brake control and the block descended, striking the wellhead before resting beside the well. The dropped block caused drill-line backlash, releasing the line socket from the drum. The socket lodged in the crown sheave guard and damaged it.
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 linked to inadequate inspection procedures.
IADC Alert 12-12. Themes: dropped objects, inspection and maintenance.