Alert 98 – 02 Kelly Wear and Damage
WHAT HAPPENED:
While making a connection in the mousehole to continue drilling, the driller was spinning the kelly to make up a joint. The hold-down nuts broke loose, allowing the kelly bushing housing to open. One of the hold-down nuts dropped onto a floorman, hitting him in the back of the head and neck. The floorman was treated for a contusion and released.