1.The liner wiper plug is connected on the lower end of setting tool and wipes the liner after sheared by a pump down plug. 2.Latches in the landing collar after bump and holds back pressure. 3.All parts are made of easily-drillable materials.

1.The packer is set mechanically, achieving permanent annulus pack-off. 2.Multiple groups of seals provide reliable sealing performace. 3.Anti- pre-mature setting mechanism prevents pre-mature packer setting during run-in-hole. 4.Hold-down slips ensures reliable sealing performance after setting the packer.