Rotating non-cemented liner hanger PHNV

Liner Hangers

The PHNV liner hanger is used to RIH and hang non-cemented liners, providing the capability to rotate an assembly while running.

PHNV liner hangers, can be produced in UIF (unit of isolation of filters) configuration, allowing to perform circulation through the liner shoe.

PHNV liner hanger consists of four functionally independent components:

anchor to hang the liner assembly in the casing string;
hydro-mechanical packer to isolate annular space;
hydraulic release mechanism that allows to RIH liner assembly, circulate, activate anchor/packer by hydraulic pressure and, then, disconnect the drill string from PHN1 by applying hydraulic pressure.
mechanical disconnection to back up a hydraulic release mechanism.

PARAMETER DESCRIPTION	VALUE
PARAMETER DESCRIPTION	PHNV1.127/178-114-UIF OTTG
Liner nominal OD, mm	114
Casing nominal OD, mm	178
Maximum torque, kN*m	8
Maximum tool OD (at centralizer), mm	149 (152)
Drift ID (after activation), mm	99
Values of differential activation pressures1 , MPa – anchor – packer – hydraulic disconnection device	16 16 20
Maximum differential pressure on packer, MPa	15
Maximum operating temperature2 , °C	100
Maximum axial tensile load on disconnection3 , kN	700 (70)
Connecting threads4 : – top GOST 28487 (GOST R 50864) – bottom GOST 632-80 – pup-joint GOST 633	Z-102 ОТТГ114 60
Length in operating position, mm	3950
Weight in operating position, kg	192

¹ The values are given for all shear bolts installed.

² For reference only! – depends on operating conditi

³ Calculated value when stresses reach tensile yield of the material.

Liner Hangers