RAC-20 | 2-3/4” Five Arm End Roller Centralizer

RAC-20 is a 2-3/4″, 5-Arm roller centralizer designed specifically for cased-hole operation. The 5-arm configuration lends itself to better centralization in the borehole which makes this centralizer ideal to maintain logging tools accurately centred in vertical, deviated, or fully horizontal wells. The RAC-20 can be built with standard GO, or reverse-GO (for ex. Sondex) ends. The centralizer collapses completely to 2-3/4″ diameter to allow it to go through downhole restrictions. The wheels and axles are hardened for longer service life.

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Applications

For accurate centering of logging and production tools
Used in vertical, deviated, or horizontal wells
Prevent tools from wearing
Normal or harsh environment

Features

Rated for high-temperature and high-pressure environments
Electrical feed-through enables the tool to be used at any point in the string
Five sets of arms with rollers provide a radial force and ultra low friction through the full operating diameter
Five spring loaded arms extend to fit required inner pipe diameters
Shims can be added to springs to increase centering force
Corrosion resistant alloys are used throughout the tool design
Easy to service and maintain

Specifications

Minimum Casing ID Small Wheels 6.98 cm (2.75 in) Minimum Casing ID Large Wheels 10.16 cm (4.0 in)
Force in 5.5” Casing without Shim 100 LBS Force in 5.5” Casing with 1 Shim 130 LBS
Maximum Deviation 90 Degrees Maximum Casing ID 26.025 cm (10.25 in)
Tool Length (make-up) 77.6 cm (30.55 in) Tool Length (shipping) 85.4 cm (33.63 in)
Max. Temperature 204°C (400°F) Max. Pressure 137.9 Mpa (20
Tool Weight 14.5 Kg (32 Lb) – –
Arms & shaft material Stainless steel Sub material TM3 & Aluminum Bronze
Top End Connector Contact Socket GO Female or SX end female Bottom End Connector Contact Pin GO Male or SX end male

 

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