Blowout preventers (BOPs) are specialized valve assemblies that ... There are several distinct types of ram BOPs, each with a unique function. A BOP stack consisting of both annular and ram preventers ...

A more complicated method for bringing a blown-out well under control involves carefully capping the well with a new blowout preventer, or "BOP." BOPs are essentially large valves on the surface ...

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 ...