Blind ram:

Its ends do not fit around the drill pipe but seal against each other and shut off the space below completely.

See ram

Terms Related to Blind ram

• 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 ...

• 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.

• Blowout preventer

  1. One of several valves installed at the wellhead to prevent the escape of pressure either in the annular space between the casing and drill ...

• Blowout preventer operating and control system

  The assembly of pumps, valves, lines, accumulators, and other items necessary to open and close the blowout preventer equipment. Also called closing unit.

• Master valve

  1. A large valve located on the christmas tree and used to control the flow of oil and gas from a well. Also called master ...

• Shear ram

  The component in a blowout preventer that cuts, or shears, through drill pipe and forms a seal against well pressure. Shear rams are used in ...

• Blowout preventer control unit

  A device that stores hydraulic fluid under pressure in special containers and provides a method to open and close the blowout preventers quickly and reliably. ...