Jackal Packer

The multistage packer was designed to overcome the various limitations of adapting commoditized production-style mechanical packers to the harsh environment of hydraulic proppant–based fracturing. 

The multistage packer offers a fit-for-service solution to increase reliability with respect to standard mechanical packers. 

Proprietary multistage packer unloader.

The unloader is the most important feature on any packer used in a fracturing application. 

It is imperative that the elements are unloaded as quickly as possible, allowing the tool to be hoisted clear of the treated zone to a cleaner area of the wellbore. 

The bypass unloader determines the depth at which the packer can be successfully operated. 

During operations the pressure above the packer can be considerably higher than below, which causes a differential that can become excessive as depth increases and lead to differential sticking. 

The  multistage packer’s proprietary unloader system extends the depth of operation without affecting the rate of pressure unloading. 

The unloader features redundant vulcanized sealing technology which ensures that the primary seal will not be subject to the high velocities caused by instantaneous pressure relief.  

These features combine for reliable packoffs and extremely quick pressure equalization, both leading to more successful jobs.

Superior seal performance.

The multistage packer’s elements are designed to allow for full pack off at very minimal compression forces.

Only 1000 lbf [4,448  N] of compression force on the element stack is necessary to hold 10,000 psi [69 MPa], which allows for further reach into the horizontal. 

Each element is vulcanized and bonded to anti-extrusion mechanisms, and when combined with the packer’s smallest comparable OD, eliminates both the risk of swabbing in the hole during run in problems associated with over-extrusion of the elements with repetitive setting. 

Sure set slipsIn conventional packers the drag block section of the rocker slips can fill with debris, causing excessive drag. 

This problem is compounded in the presence of proppant and is a result of poor design, poor circulation around the slips, and weak slip return mechanisms — all of which can cause the slips to hang up in collars, causing severe operational problems. 

The multistage packer’s proprietary sure set slips are designed with minimal debris entry points, and their unique design allows maximum circulation through the slip housing. 

The result is an ultra-reliable setting and unsetting mechanism that adds minimal drag during conveyance and is completely isolated from debris.