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Noncemented retrievable liner hanger PHN-E

Liner Hangers

Noncemented retrievable liner hanger PHN-E

The PHN-E liner hanger is used to RIH and hang a small ID non-cemented liner, providingc the possibility to retrieve the liner if required.
This PHN-E liner hanger consists of 2 parts::

  • anchor to hang the liner assembly in the casing string;
  • hydraulic disconnection that allows to RIH liner assembly, circulate, activate anchor by hydraulic pressure and, then, disconnect the drill string from PHN-E by applying hydraulic pressure.
To retrieve the liner assembly, the spear (special tool) is run and set inside the PHN-E. The overpool of 5 ton is then applied to release an anchor and start pulling the liner out.



PARAMETER DESCRIPTION

VALUE
PHN. 60/102-E PHN. 73/114-E
Liner nominal OD, mm 60 73
Casing nominal OD, mm 102 114
Maximum tool OD (at centralizer), mm 83 94
Drift ID (after activation), mm 50 60
Values of differential activation pressures1, MPa
- an anchor
- hydraulic disconnection device 		11±10%
16±10% 		11±5%
15±5%
Maximum axial load at disconnection (w/o liner assembly weight)1, kN (ton) 40 (4) 50 (5)
Maximum internal overpressure, MPa 20 20
Maximum operating temperature2, °C  
Maximum tensile force3, kN (ton) 200 (20) 300 (30)
Connecting threads:
- top as per GOST 633-80
- bottom as per GOST 633-80 		60
60 		73
73
Length in operating position, mm 1308 1320
Weight in operating position, kg кг 30 32

1 The values are given for all shear bolts installed.

2 For reference only! – depends on operating conditions for rubber parts in a well.

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