Downhole Products' EXPAND-O-LIZER URS (Underreamed Service) is a single piece centralizer designed for tight tolerance applications with the ability to recover full starting OD when in the under-reamed section.


  • Single piece, spring steel design
  • Flexible design significantly reduces running forces
  • Oversized OD provides maximum standoff in the open hole section
  • To be run in conjunction with Downhole Products' ‘HD’ heavy duty stop collar


  • Centralizer placement/T&D analysis available
  • Dedicated engineering support team
  • Product design to meet specific application requirements
  • Sizes from 4-1/2” through 20”

For specifications, application solutions, and EXPAND-O-LIZER URS availability, please contact your local Downhole Products representative.