The Pocket Slip hydraulic liner hanger with integral liner top packer has a unique compact design for highly deviated or horizontal wells. The hanger is equipped with premium o-rings and glass-filled Teflon backup rings to seal in the hydraulic cylinder. A high-strength alloy cylinder provides maximum burst and collapse rating.
The hanger is set by applying pressure through the drill pipe. A setting ball is circulated or dropped to the ball seat in the landing collar or running tool. Applied pressure acts on an internal piston, moving the slips up the cones to the set position. The hydraulic-set liner hanger incorporates a tapered roller-bearing assembly, if required, which allows the liner to be rotated in the set position while cementing the liner.
The liner-top packer is a high-performance packer that is suited for most applications and sets by applying setdown weight.
Features :-
1. The packer provides an effective annular seal between the top of the liner and the parent casing.
2. Compact design.
3. Weight-set sealing element.
4. Pocket-slip arrangement.
5. The liner-top packer features holddown slips, making it suitable for use in deviated or horizontal wells. Connection to accept an upper tieback receptacle is standard.
Liner Hanger Features and Benefits:-
* Unique protected slip design provides more slip contact area and uniform loading.
* Available in rotation or non-rotation models in which tapered roller bearings allow the liner to be rotated in the set position.
* Hydraulic cylinder remains stationary with respect to body, seals static during rotation.
* Slip and cone designed for minimum casing stress levels.
* Capable of hanging long and heavy liners.
* Hardened slips bite and hold in all standard casing grades.
* Large annular flow area in set position helps ensure minimum pressure drop.
* Body and cylinder have burst and collapse ratings equal to or greater than the API specifications for the relevant grade of casing (unless otherwise stated)
* The slip-seat design provides a weld free assembly to transmit the liner load to the casing.
Liner-Top Packer Features and Benefits:-
* High-performance, compression-set liner-top packer.
* Provides effective annular seal at liner top.
* Prevents formation breakdown, loss of cement slurry, and gas migration.
* Integral body lock ring holds positive set in seal elements.
* Holddown slips prevent light liners from movin.
Applications :-
* Drilling liner
* Production liner
* Openhole horizontal wells
* Unconventional completion
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