Apparatus and method for modified horizontal directional...

E - Fixed Constructions – 21 – B

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E21B 7/04 (2006.01)

Patent

CA 2564357

An apparatus and method for a modified horizontal directional drilling assembly for drilling pipe into a drilling surface. The drilling assembly comprises a power unit for supplying power to the assembly, a thrust frame adapted to be moved between a position substantially parallel to the drilling surface and a position substantially perpendicular to the drilling surface and a means for moving the thrust frame. The rotary and carriage assembly is adapted to apply rotational, thrust and pull-back forces to the drill pipe. The drilling assembly is adapted to drill pipe into the drilling surface at any angle relative to the drilling surface between substantially parallel to the drilling surface and substantially perpendicular to the drilling surface. The method includes the steps of placing a drill pipe onto the drilling assembly, moving the thrust frame to a desired drilling angle, moving the rotary and carriage assembly into direct contact with the drill pipe, applying rotational, thrust and pull-back forces to the drill pipe, and drilling the pipe into the drilling surface.

Un appareil et une méthode pour une installation de forage directionnel horizontal modifiée pour le forage à l~aide de tiges dans une surface de forage. L~installation de forage est composée d~un bloc d~alimentation électrique, d~un bâti de poussée conçu pour être déplacé entre une position presque parallèle à la surface de forage et une position presque perpendiculaire à la surface de forage et d~un dispositif de déplacement du bâti de poussée. L~installation rotative et de levage est conçue pour appliquer une force rotative, de poussée et de traction sur la tige de forage. L~installation de forage est conçue pour forer à l~aide de tiges dans une surface de forage à tout angle par rapport à la surface de forage entre un angle presque parallèle à la surface de forage et un angle presque perpendiculaire à la surface de forage. La méthode englobe les étapes suivantes: placement d~une tige de forage dans l~installation de forage; déplacement du bâti de poussée à l~angle désiré; déplacement de l~installation rotative et de levage en contact direct avec la tige de forage; application d~une force rotative, de poussée et de retour à la tige de forage; et forage avec l~aide de tiges dans la surface de forage.

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