OPR Mechanical Hinged Positive Stand-off Rigid Centralizer

The OPR is a rigid positive stand-off, non-welded, mechanical, hinged centralizer developed for less challenging wells.

The OPR offers an economical alternative to solid body centralizers in a rigid design that maximizes fluid dynamics and provides optimized stand-off, typical of rigid centralizers.

This non-welded product utilizes mechanically connected ribbed bows and a traditional hinge design for easy installation. 

Features and benefits

  • Centek QA
  • Good centralization in less challenging wells 
  • Economic choice 
  • Positive stand-off 
  • Maximizes fluid dynamics

Targeted applications

  • Vertical wells
  • Slightly deviated sections of the wellbore
  • Onshore
  • Applications where slip-on centralizer can’t be used

Applications for OPR rigid, positive stand-off centralizer

Stop collars

The OPR is available with stop collar developed with the same hinge.

Performance ratings

Centralization and the ease of running casing is often a balance between strength and flexibility which combine to support, what we call, 'runability'. To help with product selection we've added a rating to all our products for flexibility, runability and inherent strength.

Rating for OPR rigid centralizer


The OPR mechanical hinged positive stand-off rigid centralizer is available to suit casing sizes ranging from 4 1/2" to 18 5/8".

For more information talk to our Product Service Experts today or use our Product Selector Tool to find the right product for your application.

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