Drill pipe

Details Drill pipe Drill pipe

E - Fixed Constructions

21

B

E21B 21/10 (2006.01) E21B 19/16 (2006.01)

Patent

CA 2741487

A drill pipe having a tubular body through which is provided a main bore, a side port provided in an exterior sur-face of the body, a side bore extending through the body from the main bore to the side port, and a valve member which is mov-able between a closed position in which fluid flow through the side bore is substantially prevented and an open position in which fluid flow through the side bore is permitted, wherein the movement of the valve member between the closed position and the open position comprises translational movement, and the valve member is located at least predominantly within the side bore.

Tige de forage, comprenant un corps tubulaire à travers lequel un alésage principal est formé, un port latéral formé dans une surface extérieure du corps, un alésage latéral qui s'étend à travers le corps de l'alésage principal jusqu'au port latéral, et un élément de soupape qui peut se déplacer entre une position fermée, dans laquelle un écoulement de fluide à travers l'alésage latéral est sensiblement empêché, et une position ouverte, dans laquelle un écoulement de fluide à travers l'alésage latêral est autorisé, dans laquelle le déplacement de l'élément de soupape entre la position fermée et la position ouverte comprend un mouvement de translation, et l'élément de soupape est disposé au moins principalement à l'intérieur de l'alésage latêral.

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