The premium liner-top packer is mechanically set with weight after the hanger is set and cementing operations are completed. The incorporated, patented helical lock wire mechanically locks the Polish Bore Receptacle to the packer, preventing the possibility of the Polish Bore Receptacle backing off. There are many reasons to use this packer to isolate the liner top, including
• isolation of formation pressure below the liner top from the casing ID above.
• isolation of treating pressures below the liner top during fracture or acid work.
• isolation of formation fluids while the cement sets, eliminates gas migration.
• isolation of lost-circulation zones.