Advanced Oil Detection Technology

Roller Centralizer

Revolutionary three-arm spring-loaded cage system designed for precision production profiling and leak detection. One tool, multiple casing sizes, unmatched accuracy in the most demanding environments.

ENGRD Fullbore Spinner
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Injection Flow
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Production Flow
Electronics Housing
Three-arm Spinner
Spring-Loaded Cage
TEMPERATURE RATING
350°F (177°C)
PRESSURE RATING
18,000 psi
OPERATION RANGE
1.69″–7.63″
Technical Excellence

SPECIFICATIONS

The Roller Centralizer is a mechanical tool used in production logging operations to keep the tool string centered within the wellbore. Its roller system reduces friction against the casing and enables smooth, controlled movement when running in or pulling out of hole. By maintaining centralization, the centralizer helps improve data quality and consistency during logging. Multiple link configurations are available to cover a wide range of casing sizes and wellbore conditions.

Low-Friction Conveyance

Roller design minimizes drag to improve running and pulling efficiency.

Improved Centralization

Keeps the tool string centered for consistent, accurate production logging data.

Modular Range

Interchangeable link assemblies expand the operating diameter to match wellbore sizes.

Sour-Service Ready

Built with materials suitable for harsh environments and H₂S exposure.

Physical Dimensions

Type Centralizer
Length 31.13″

Operating Conditions

Temperature Rating 350 °F (177 °C)
Pressure Rating 18,000 psi
Material Sour-service ready

Performance

Operation Range 1-11/16″ min restriction to 7-5/8″ (24#); expandable to 13-3/8″ max with link sets
Max Tension 18,000 lbf
Connectivity Go connector