Hydraulic Decoking Systems Drill Stem Guide and Shroud Assembly

Drill Stem Guide and Shroud Assembly for alignment and protection in hydraulic decoking systems

Introduction Features Literature

Hydraulic Decoking Systems Drill Stem Guide and Shroud AssemblyHydraulic Decoking Systems Drill Stem Guide and Shroud Assembly

Brand: Flowserve
Description:

The Drill Stem Guide and Shroud Assembly is an essential component in hydraulic decoking systems, engineered to provide accurate alignment, lateral support, and mechanical protection for the drill stem and cutting tools during coke removal in delayed coking units (DCUs). Installed at the top of the coke drum or cutting deck, the guide and shroud ensure precise tool entry, minimize vibration, and protect surrounding structures from high-pressure water and debris.

The guide assembly maintains vertical alignment of the drill stem, preventing deflection and wear during boring and cutting, while the shroud acts as a protective barrier against spray and thermal effects. Constructed from corrosion- and heat-resistant materials, the assembly is designed for long service life in high-temperature, high-cycle refinery environments.

Ideal for manual and automated decoking systems, the Drill Stem Guide and Shroud Assembly enhances cutting accuracy, safety, and system longevity.

The Flowserve drill stem guide and shroud can accommodate up to 305 mm (12 inches) of overall lateral misalignment. The innovative design rides on the drill stem and fully encloses the cutting tool. It diverts dangerous water flow vertically away from operators in the unlikely event a pressurized cutting tool is retracted from the drum or energized while stowed.

  • Applications:
    Petroleum Production and Refining, Decoking
  • Industries:
    Heavy Oil and Upgrading, Delayed Coking

Features and Benefits

  • Fully enclosed 9.5 mm (0.375 inch) thick carbon steel shroud
  • Open top allows steam and gas to escape in event of a hot spot blowout
  • Can be installed without field welding and without unit shutdown
  • Self-aligning, accommodating up to 305 mm (12 inches) of lateral misalignment
  • Auto-latching / unlatching feature available; actuation by lowering and raising of drill stem is available
  • Loosely mounted on drill stem to permit insertion of the cutting tool into the drum

Hydraulic Decoking System Equipment Bulletin

Decoking System Equipment Innovation Poster

Improve decoking precision and safety with a robust drill stem guide and shroud assembly. Contact us today to integrate this solution into your hydraulic decoking system.