A BOP stack consisting of both annular and ram preventers may also incorporate additional safety valves, such as a kill line valve and a choke manifold. Annulars may be used to prevent the onset of a ...

Petroleum Oil Tools remanufactures and rebuilds blowout preventer stacks for oil and gas drilling rigs. Each oil well BOP stack is remanufactured to the variety of style, size, and pressure ...

IWCF Rotary Drilling: This internationally recognized certification program focuses on the equipment, principles and procedures for Surface BOP Stack Operations or Combined Surface/Subsea BOP ...