Inspection, repair and maintenance

Deepwater inspection, repair and maintenance (IRM) of offshore oil and gas platforms is a necessary requirement throughout the industry.

Helix can provide you with up-front comprehensive support from our experienced and knowledgeable in-house subsea engineering teams. 

Whether you need flowline insulation or flow assurance remediation packages, subsea tree maintenance, pipeline inspections or hydraulic well stimulation, we have the right equipment and decades of experience to handle your work.

With decades of experience providing support to offshore operators worldwide, Helix provides expertise in the following areas:

  • Integrated life-of-field support
  • Metrology
  • Production Jumpers Installation
  • Production Jumper Recovery
  • Hydraulic stimulation
  • Cable burial
  • Installing subsea trees
  • Subsea tree maintenance
  • Subsea tree repair
  • Subsea tree recovery
  • Tree change out
  • Umbilical lay replacement
  • Integrity inspection
  • Section removal
  • Small flowline & umbilical lay
  • SCM change out
  • Hydrate remediation (pipeline & well)
  • Subsurface safety valve systems
  • Saturation Diving

Saturation Diving

Since 1987, we’ve combined our deep expertise in saturation diving with our industry-leading well intervention capabilities. This unique combination ensures we have the experience to tackle the most challenging subsea hardware. Our capabilities also include subsea inspections and repairs—tasks that require more precision and maneuverability than remotely operated vehicles (ROVs) can provide. 

Helix’s well intervention monohull vessels, Seawell and Well Enhancer, are both equipped with integrated 18-man saturation systems, each rated to 300 meters of seawater. 

From 2013 to 2024, our diving teams successfully completed 5,401 bell runs and worked a total of 4,953 days, accumulating over 1,390,259 man-hours in saturation diving.

Where to next?

Reservoir management

Optimize production recovery and maximize value throughout the life cycle of an oilfield. 

Life of field services

Critical life-of-field services for offshore projects across the world.

Offshore renewables

Helix is committed to supporting the responsible transition from a carbon-based economy.