IBOP for top drive system
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.
