ЗЭРС

EXTERNAL CASING ATTACHMENTS

Auxiliary top modular packer PDV-M

PDV-M device is applied for hermetic connection with a liner “head” run in with the help of hangers
PHCZ-type and for additional sealing of a liner “head”.
Besides, the device joint shoe can be used to ensure sealed joint with a liner “head” and if required
to build up a liner to fix the leaks above the liner “head”.
The device is RIH on drill pipes and is actuated by the partial tool weight unload. The disconnection
is performed automatically at under tension over own weight more than 5 tn

PARAMETER DESCRIPTION	VALUE
PARAMETER DESCRIPTION	PDV-M. 102	PDV-M. 114	PDV-M. 127
Liner nominal diameter equipped with the device, mm	102	114	127
Maximum outer diameter of the device, mm	122	140	149
Drift diameter of the device, mm	89	99	111
Minimum load for the packer actuation, kg	5000
Maximum tension for disconnection, kg	5000
Maximum tensile force¹ , kN	600	700	800
Maximum pressure differential between the zones isolated by a hydro-mechanical packer, ΔP, MPa	15
Length of the device fully assembled, mm	1430	1485	1720
Device weight, kg, not more	37,4	64	77,4
Maximum operating temperature² , C°	100
Connecting threads: - top according to GOST 28487-90 - bottom according to TU 14-161-163	ОТТМ 102 З-102	ОТТМ 114 З-102	ОТТМ 127

1
Calculated value when stresses reach yield point of the material.
2
Reference only, depends on operating conditions of general mechanical rubber goods in a well