Importance

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Abstract

A torque swivel apparatus. The apparatus includes an upper body assembly secured to the lower end of a locking swivel of the type used in wireline operations. The upper body would engage into a lower body, the lower body secured to the drill string at the rotary table. The upper body would provide a pair of milled out wedge portions for accommodating a pair of wedge members in the lower body to engage therein during coupling. The apparatus further includes a plurality of cylinders positioned into the upper body with a piston member secured within each cylinder, so that each of the four faces of the wedge portions of the upper body accommodates a pair of pistons in its wall. The outer face of each of the pistons would make contact with each of the four faces of the wedge members of the lower body when coupling has occurred. The inner face of each of the pistons would mate with a line having fluid, which when acted upon would register force against the piston. A method of measuring the torque in a drill string is also disclosed.

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First Claim