Subsea & Offshore

Subsea Riser Maintenance Services

Inspection, repair, and life-extension of subsea risers and associated infrastructure under live offshore conditions.

Environment Offshore / Subsea
Depth Range Up to 3000m
Riser Types SCR · Flexible · Hybrid
Mobilization 72–96 hrs

Subsea Riser Maintenance Under Live Offshore Conditions

Subsea riser maintenance ensures the structural integrity and continued operation of critical offshore infrastructure connecting subsea wells to surface facilities. Fairtex delivers full-scope maintenance programs covering inspection, repair, and life-extension strategies for steel catenary risers (SCR), flexible risers, and hybrid systems.

Our teams operate in live offshore environments, coordinating with platform operations to execute inspection and intervention work without disrupting production. Maintenance scopes are aligned to API RP 2A, DNV-ST-N001, and ISO 13628 standards.

When to deploy riser maintenance: detected corrosion, fatigue cracking, coating degradation, marine growth accumulation, or scheduled integrity reassessment.

What this service covers

Inspection & Integrity Assessment

ROV-based visual inspection, ultrasonic thickness measurement, and fatigue hotspot analysis to detect degradation and assess remaining life.

Repair & Intervention

Clamp installation, coating repair, anode replacement, and localized reinforcement for damaged riser sections.

Corrosion Control

Deployment of cathodic protection systems and advanced coatings to mitigate corrosion in harsh subsea environments.

Key Takeaways

  • Maintains riser integrity without shutdown
  • Extends asset life and reduces replacement cost
  • Fully compliant with offshore integrity standards
Methodology

Execution sequence

01

Scope Definition

Client scope reviewed and inspection/repair plan developed by subsea engineers.

02

Pre-Deployment Checks

ROV systems, tools, and materials prepared and verified before offshore mobilization.

03

Inspection Execution

ROV deployed for detailed inspection and data capture along riser length.

04

Repair & Intervention

Identified defects repaired using clamps, coatings, or replacement components.

05

Reporting & Certification

Full inspection and repair report issued with recommendations for future monitoring.

Equipment

Instruments and systems used for this service.

ROV System
Work-Class ROV
Deepwater capable ROV for inspection and intervention tasks.
UT Equipment
Subsea Ultrasonic Scanner
Measures wall thickness and detects corrosion under marine growth.
Clamp System
Hydraulic Repair Clamp
Used for structural reinforcement of damaged risers.
Standards

Codes and standards this service conforms to.

API
RP 2A
Offshore Structural Design
DNV
ST-N001
Marine Operations
ISO
13628
Subsea Production Systems
Deliverables

What you receive.

Inspection Report

Detailed report including findings, images, and recommendations.

Repair Log

Documentation of all interventions performed during maintenance.

Raw Data

ROV footage and inspection datasets provided to client.

Certification

Compliance certificates aligned with offshore standards.

FAQs

Frequently asked questions.

What types of risers do you maintain?

We maintain steel catenary risers, flexible risers, and hybrid systems across shallow and deepwater environments.

Do you operate in deepwater environments?

Yes, our ROV systems are capable of operating at depths up to 3000 meters depending on project requirements.

Have a Scope?

Have a subsea maintenance scope?

Our offshore team will review your riser condition and propose a maintenance plan within 48 hours.

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