Importance

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Abstract

A rack for supporting drilling tubulars such as drill pipe, collars and the like includes a base and a rail. The rail is coupled to the base by means of two columns, each of which is provided with threads such that the tilt angle of the rail with respect to the base can be adjusted to provide gravity feeding of drilling tubulars to either end of the rail. The rail is provided with two pivotably connected stop plates which move in opposition. The stop plates are controlled by means of an air cylinder to allow only one drilling tubular at a time from those stored on the rack to roll off the end of the rail. Furthermore, both stop plates can be retracted below the level of the rail so as not to interfere with the movement of tubulars onto the rack. The combination of the tiltable rail and the two stop plates provides a rack which can be used to control movement of drilling tubulars on to and off of the rack with a minimum of manpower requirements.

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First Claim