Non-rotating Champ Packer

The Non-Rotating Champ Packer is ideal for deepwater extended reach applications on floating vessels, where
vessel heave and obtaining sufficient torque down hole to manipulate the toolstring can be a major challenge or for highly deviated wells. This packer has the same basic features that it does not require rotation to set and can be re-set for a predetermined number of times.
It is a hookwall retrievable packer with a concentric bypass and a continuous indexing J- slot which incorporates a lock-out mechanism. The non rotating champ packer can cycle from the run-in-hole (RIH) position to the set and pull-out-of-hole (POOH) position simply by lifting or lowering the workstring in the wellbore. After the packer has been set the required amount of times, the packer can be mechanically locked out to prevent any further setting operations as the toolstring is recovered from the wellbore.
Each assembly includes an indexing lock-out J-slot mechanism, mechanical slips, packer elements, hydraulic
slips, and a concentric bypass. Round, hydraulic piston-type slips in the hydraulic holddown mechanism
prevent the packer from being pumped up hole.
A J-slot position locking mechanism keeps the packer in the RIH configuration until the desired depth is
reached and the locking mechanism is deactivated. The position locking mechanism is deactivated by the use
of a rupture disk, which is set to rupture at a pressure that is predetermined during the job calculations. The
deactivation pressure can be either wellbore hydrostatic at a predetermined depth or pump pressure applied to
the wellbore at surface. The locking mechanism allows the packer to be run without cycling through the
positions in the J-slot as each joint of pipe is being made up at the surface.
The J-slot lock-out mechanism prevents the packer from setting after the operation is complete and allows the
string to move freely even in significant heave situations on floating vessels.

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