TERMIUM Plus®

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SHEARING RAM [1 record]

Record 1 2011-05-09

English

Subject field(s)
  • Equipment (Oil and Natural Gas Extraction)
  • Oil Drilling
  • Petroleum Technology - Safety
DEF

A ram specially designed to cut through or shear drill pipe when the string is in the hole and it is necessary to seal the bore completely and quickly against high well pressure.

DEF

A closure mechanism on a well's blowout preventer stack fitted with chisel-like jaws that are hydraulically operated. When the ram is closed on the pipe the jaws or blades cut the pipe, permitting the upper section to be removed from the BOP stack.

CONT

... shear rams cut through drill pipe and then form a seal.

CONT

Shear rams are used in mobile, offshore drilling operations to afford a quick method for moving the rig away from the hole when there is not time to trip the drill stem out of the hole.

Key term(s)
  • shear rams
  • shearing ram
  • shearing rams

French

Domaine(s)
  • Outillage (Extraction du pétrole et du gaz)
  • Forage des puits de pétrole
  • Sécurité (Technologie pétrolière)
DEF

Opercule d'un obturateur de puits muni de lames qui permettent d'assurer une coupure instantanée des tiges.

CONT

[Figure.] Obturateur double à mâchoires (dont un jeu de mâchoires-cisailles).

OBS

Les BOP [obturateurs de puits] fonctionnent à 1 500 psi (pression maxi de travail) sauf pour la fonction de cisaillage («shear-ram») de la garniture où la pression nécessaire peut être importante compte tenu de la résistance des tiges.

OBS

mâchoire de sécurité à cisaillement : terme confirmé par l'Institut français du pétrole.

Key term(s)
  • mâchoires de sécurité à cisaillement
  • mâchoires coupantes
  • mâchoires cisaillantes
  • mâchoires-cisailles

Spanish

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