Downhole Products' Expand-O-Lizer ‘Underreamed Service’ is a single piece, non-welded bow spring based on DHP’s field proven inline centralizer sub cage. Designed for less demanding, close tolerance underreamed sections where the formation is deemed strong enough to handle the surge effect of running traditional or spray-on type stop collars through the previous casing string. Capable of compressing to pass extremely tight restrictions yet able to recover full start O.D. when in the underreamed section. The URS is rapidly becoming the centralizer of choice in a budget driven market place.
Features/Benefits
Non-welded, robust one piece design, suitable for onshore installation reducing rig time costs and HSE exposure.
Flexible design significantly reduces running forces through cased and open hole restrictions.
Oversized O.D. provides maximum stand-off in any open-hole section ensuring ideal conditions for uniform cementation and prevention of channelling.
Restoring Forces up to 2 times greater than API.
To be run in conjunction with the Spir-O-Lok® ‘HD’ heavy duty stop collars complete with engineered high holding force set screws (60% improved holding force on traditional set screws).
Options
Size range 4-1/2” - 20”
Features/Benefits
Non-welded, robust one piece design, suitable for onshore installation reducing rig time costs and HSE exposure.
Flexible design significantly reduces running forces through cased and open hole restrictions.
Oversized O.D. provides maximum stand-off in any open-hole section ensuring ideal conditions for uniform cementation and prevention of channelling.
Restoring Forces up to 2 times greater than API.
To be run in conjunction with the Spir-O-Lok® ‘HD’ heavy duty stop collars complete with engineered high holding force set screws (60% improved holding force on traditional set screws).
Options
Size range 4-1/2” - 20”
