Hydraulic Set Liner Hanger
The principal advantage of hydraulic set liner assemblies is that no rotation of the liner assembly is necessary to set the slips. The activation of the setting mechanism in a hydraulic-set liner hanger assembly is by creating a sufficient differential pressure to initiate the setting sequence. Normally, the creation of the differential pressure is by applying pressure down the drill string from the surface.

Because one threaded connection is necessary between the body and the lower sub (
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