A guide rail system for a telescoping mast on a drilling rig

E - Fixed Constructions – 21 – B

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Details

E21B 19/00 (2006.01) E21B 15/00 (2006.01)

Patent

CA 2572758

A guide track system for a tool that can be raised and lowered within a telescoping drilling rig tower is provided. The system consists of parallel guide rails mounted on a fixed lower tower section and on a movable upper tower section of the drilling rig tower. The lower and upper guide rails are parallel to one another and overlap one another when the lower tower section is nested within the upper tower section. Guide wheels rotatably attached to the tool can have parallel grooves to roll on the guide rails. The grooves have sidewalls that flare outward so that they do not scuff against the guide rails as the tool travels up and down within the tower.

Rail de guidage pour outil, qui peut être élevé et abaissé dans une tour de forage. Le système est composé de rails de guidage parallèles montés sur une section inférieure fixe et sur une section supérieure mobile de la tour de forage. Les rails de guidage inférieurs et supérieurs sont parallèles les uns aux autres et se chevauchent lorsque la section inférieure de la tour est escamotée dans la section supérieure de la tour. Des roues de guidage articulées fixées à l'outil sont dotées de gorges parallèles afin de pouvoir rouler sur les rails de guidage. Les gorges sont dotées de parois évasées vers l'extérieur pour que l'outil ne frotte pas sur les rails de guidage lorsqu'il monte et descend dans la tour.

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