RAC-11 | 1-11/16” Five Arm Mid Roller Centralizer

RAC-11 is a 1-11/16″, 5-Arm roller centralizer. This centralizer has feed-through wiring to be used with the DSS HSR-10 cement bond tool. The RAC-11 can be installed in the tool field joint between the Sonde and the GR/CCL section to provide superior centralization even in highly deviated or completely horizontal wells. The 5-arm configuration lends itself to better centralization in the borehole, which is essential for accurate and repeatable cement bond measurements. The centralizer collapses completely to 1-11/16″ 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 4.28 cm (1.6875 in) Tool Length (make-up) 79.62cm ( 31.35in)
Force in 4.5” Casing without Shim 28.8 Kg (63.5 LBS) Force in 4.5” Casing with 1 Shim 31.8 Kg (70.0 LBS)
Maximum Casing ID 19 cm (7.5 in) Maximum Deviation 90 Degrees
Max. Temperature 204°C (400°F) Max. Pressure 137.9 Mpa (20 000 PSI)
Tool Length (shipping) 89.91cm ( 35.40in) Tool Weight 6.8Kg (15Lb)
Arms & shaft material Stainless steel Sub material TM3 & Aluminum Bronze
Top End Connector Field Joint Male Bottom End Connector Field Joint Female

 

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