Related Oil & Gas Terms

• Ram

  The closing and sealing component on a blowout preventer. one of three types–blind, pipe, or shear–may be installed in several preventers mounted in a stack on top of the wellbore. blind rams, when closed, form a seal on a hole that has no drill pipe in it; pipe rams, when closed, seal around the pipe;...

• Choke line

  1. a pipe attached to the blowout preventer stack out of which kick fluids and mud can be pumped to the choke manifold when a blowout preventer is closed in on a kick. 2. a high-pressure pipe leading from an outlet on the bop stack to the backpressure choke and associated manifold. during well-control operations, the fluid under...

• Stack

  1. a vertical arrangement of blowout prevention equipment. also called preventer stack. see blowout preventer. 2. the vertical chimney-like installation that is the waste disposal system for unwanted vapor such as flue gases or tail-gas streams....

• Ram blowout preventer

  A blowout preventer that uses rams to seal off pressure on a hole that is with or without pipe. also called a ram preventer....

• Nipple up

  In drilling, to assemble the blowout preventer stack on the wellhead at the surface....