IBOP, inside blowout preventer, is inside valve of top drive system, applicable to control flows and prevent high pressure emergencies. For Varco top drive, there are two IBOPs(upper IBOP and lower IBOP) on the pipe handling devices, the working pressure of upper IBOP is 15000psi. If emergency, driller can close the upper IBOP by remote, and close the lower IBOP manually.
Wash pipe assembly for top drive
Wash pipe assembly is a connection part between main shaft and s-pipe, the flow path of the drilling fluid. It is fixed on the end of main shaft and s-pipe, often required to be disassembled. It is a main consumable part of top drive system.