DNV's Wellhead Fatigue Manager enables operators to assess, monitor, and manage wellhead fatigue through a single integrated platform. Built on the industry-recognized DNV-RP-E104 methodology, the solution digitalizes the complete fatigue assessment workflow, connecting engineering analysis, lifecycle data, and stakeholder collaboration in a unified environment.

By replacing fragmented processes with standardized digital workflows, the Wellhead Fatigue Manager helps reduce integrity risk, accelerate engineering decisions, lower assessment costs, and maximize asset life. Operators, drilling contractors, engineering consultants, and equipment suppliers can work from a single source of truth, improving consistency, traceability, and confidence in critical integrity decisions.

Business benefits

  • Save significant operational expenditure by potentially eliminating the need for expensive wellhead load relief systems
  • Reduce operational and integrity risk by identifying fatigue-critical conditions before they develop into failures
  • Accelerate engineering decisions through automated workflows and rapid scenario evaluations
  • Increase confidence in fatigue assessments through consistent methodologies and fully traceable calculations
  • Lower engineering effort by minimizing manual data handling and repetitive analyses
  • Improve collaboration by providing a shared platform for all stakeholders
  • Extend asset life through continuous fatigue tracking and data-driven integrity management.

The challenge

Subsea wellheads are exposed to cyclic loading from, drilling activities, workovers, and interventions. Over time, these loads can lead to fatigue damage in critical components such as the wellhead, conductor, and casing system. Accurate fatigue assessment requires the combination of global system dynamics, local stress analysis, environmental data, equipment characteristics, and operational history.

Traditional workflows often involve multiple organizations working with different tools with separate assumptions, datasets, and methodologies. This creates challenges related to data quality, consistency, version control, and stakeholder alignment over the well lifecycle. As a result, projects may experience unnecessary rework, longer schedules, increased costs, and reduced confidence in fatigue life predictions.

The solution

The Wellhead Fatigue Manager brings the entire fatigue assessment process into a single digital workflow. Global analyses, load transfer calculations, fatigue assessments, data management, and reporting are connected through a common methodology and data model.

All engineering inputs—including environmental conditions, vessel motions, well architecture, and equipment data—are managed within a centralized environment. Updates automatically propagate through the workflow, significantly reducing manual effort and enabling rapid reassessment when designs or operating conditions change.

The result is faster project execution, reduced interface risk, improved collaboration, and more robust integrity decisions throughout the well lifecycle.

Key capabilities

  • Simulate the dynamic response of the drilling vessel, riser, and wellhead system under operational and environmental loading conditions.

    Example: Assess the loads transferred to the wellhead during a North Sea drilling campaign exposed to severe storm conditions.

  • Convert global loads into local stresses at critical fatigue hotspots within the wellhead and casing system.

    Example: Evaluate stress ranges at the conductor-wellhead connection to identify fatigue-critical locations.

  • Calculate and monitor accumulated fatigue damage throughout the life of the well.

    Example: Combine fatigue exposure from drilling, completion, intervention, and workover campaigns to determine remaining fatigue life.

  • Quickly assess the impact of design changes or operational modifications.

    Example: Compare the fatigue impact of different riser configurations, BOP weights, or drilling durations in hours rather than weeks.

  • Maintain a single source of truth for models, assumptions, input data, and results.

    Example: Reuse validated environmental, operational and well design data across multiple studies while maintaining full traceability and auditability.

Supporting the entire well lifecycle

  • Optimize wellhead, casing, and riser configurations to improve fatigue performance and reduce lifecycle risk before drilling begins.

  • Assess the fatigue impact of drilling, completion, intervention, and workover activities.

  • Track accumulated fatigue damage and perform periodic reassessments using updated operational and inspection data.

  • Evaluate remaining fatigue life and support requalification decisions for wells operating beyond their original design life.

Built on the industry standard

The Wellhead Fatigue Manager is based on DNV-RP-E104, the globally recognized recommended practice for wellhead fatigue analysis. Developed through a DNV-managed Joint Industry Project involving 16 leading operators and 6 engineering companies, the methodology provides a consistent and trusted framework for fatigue assessment and lifecycle management. The recommended practice document has been downloaded more than 1500 times by 400 companies in 55 countries.

Why DNV

DNV combines decades of experience in subsea engineering, well integrity, fatigue assessment, and digital solutions. As an independent technical advisor and standards developer, DNV provides a trusted platform built on recognized methodologies, deep domain expertise, and continuous technology development. The result is a solution that helps operators manage wellhead fatigue more efficiently, consistently, and confidently throughout the asset lifecycle.