SwivelMASTER™

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The Caledus SwivelMASTER® is a drill-pipe deployed tool designed primarily to aid sand control screens to be run in ERD/Horizontal wells to reach the planned TD (Total Depth), particularly when the horizontal displacement or step-out is disproportionately greater than the vertical component of the well. In ERD/Horizontal wells there is often insufficient down weight available to the driller to push screens or other lower tubulars into the well without picking up Drill Collars or HWDP or by breaking the friction by rotation, but it is often not desirable to rotate the lower string (perhaps with delicate accessories) for fear of damage. Picking up DC’s and/or HWDP is time consuming and can be hazardous.

The tool allows the upper drill-pipe to be rotated whilst running in the hole, with tension or compression at the tool, without rotation or torque being applied to the string below the tool. The ability to rotate the drill-pipe in ERD/Horizontal wells whilst running in is advantageous due to the fact that drag is reduced and helical buckling mitigated. The reduction in drag makes more surface weight available in the ERD/Horizontal well. This in turn makes it easier to observe and apply the necessary safe and measured down-weight to aid getting to TD.

The Caledus SwivelMASTER® can be used in applications 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.

Significantly the SwivelMASTER® can be functioned once, by the application of a pre-determined pressure, to permanently lock and enable full rotation and torque to be transmitted through the whole drill-pipe string to the pipe below. The pressure that functions the tool usually comes from the device required to set a liner hanger or packer and release its running tool. Caledus also recommends an alternative means to function the tool with a pump-down rupture disk wiper dart and catcher sub positioned below the SwivelMASTER® (Activation DartCATCHER™).

The SwivelMASTER® is equipped with rotary shouldered drill pipe connection box up and pin down, ready to pick-up and run in the hole at the desired position, usually at the base of the drill string.

The SwivelMASTER® reduces cost and risk through improved operational efficiency.

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