SwivelMASTER™

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The Caledus SwivelMASTER™ is a drill-pipe deployed tool to aid sand control screens or other liners to be run in high angle/ERD or tortuous wells to achieve the required depth.

The tool allows the drill-pipe to be rotated whilst running in the hole, independently, without rotating or imparting torque to the screens or liner below. The ability to rotate the drill-pipe in complex wells is advantageous due to the fact that the associated drag and friction is reduced in the drill-pipe string. This in turn makes it easier to observe and apply the necessary safe and measured down-weight to aid getting the sand screens or liner to bottom. In ERD wells there is often insufficient down weight available to the driller to push the screens into the well without breaking the friction by rotation, but it is often not desirable to rotate the screens or liners (perhaps with delicate accessories) for fear of damage. It may be the case that the screens or other liner have low make-up torque connections.

The SwivelMASTER™ will allow rotation of the drill string above the tool to be achieved with tension or compression at the tool.

Significantly the SwivelMASTER™ can be functioned, by the application of differential pressure, to securely lock and thus enable full rotation and torque to be transmitted through the whole drill-pipe string to the pipe below if it becomes desirable. To activate the lock-up feature a pre-determined differential pressure, at the tool, of around at 2500psi for example would be required.

The SwivelMASTER™ comes equipped with the required rotary shouldered drill pipe connection box up and pin down, ready to pick-up and run in the hole at the desired position in the drill string, usually not far above the top of the screens or liner.

The Caledus SwivelMASTER™ can be used in any application where it is advantageous to rotate the upper drill string independently of the string below but still have the ability to engage the torque path if required.

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