Alert 10 – 09 Dropped Object – High Potential Near Miss
WHAT HAPPENED:
After a scraper run, the crew was tripping out of the hole with the scarper assembly. At the time of the incident the driller was racking a full stand of 31/8” diameter drill collars including a 4½” rotating scraper. After landing the full stand on the set back area, the derrickman unlatched the elevators and started pulling the stand into the monkey board racking fingers. At that moment the 4½” scraper broke apart and separated at the mandrel’s 1¼” service connection. The 2 upper joints of the drill collar stand fell through the mast hitting and dislodging a drill floor walkway and then stuck in the ground.