Service

Subsea Inspection, Maintenance & Repair

Subsea survey, inspection, maintenance, repair, emergency response, and ROV-supported Christmas-tree operations.

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Pre-Construction / Field Development

  • Seabed and route surveys with multibeam sonar and side-scan mapping
  • Pre-lay seabed preparation: dredging, mattressing, trenching
  • Acoustic/laser metrology for precise spool and manifold fit-up
  • Positioning aids and pre-installation alignment checks

Inspection

  • General and close visual inspections (HD/4K)
  • 3D digital twin creation and photogrammetry
  • Non-destructive testing (ultrasonic thickness, cathodic protection, flooded-member detection)
  • Acoustic leak detection and pipeline free-span surveys
  • Environmental monitoring and scour assessments

Maintenance

  • Marine growth removal using high-pressure jetting or rotary brushes
  • Valve exercising and functional testing
  • Repair & Emergency Response
  • Hydraulic cutting, clamping, and hot-tap fittings for pipeline repair
  • Leak detection and sealing operations
  • Debris removal and asset recovery after storms or impact incidents

Subsea Xmas Tree Operations

  • ROV-assisted installation and alignment of Xmas trees to wellheads
  • Torqueing and verification of critical connections
  • Control module or choke change-outs, valve actuation, and pressure testing
  • Ongoing inspection and maintenance of tubing hanger assemblies