Subsea Wellheads & Conductors 300+ Subsea Well Drilling Programmes We use the latest design methodologies to help you determine the most suitable and robust wellhead, connectors, conductor and surface casing to meet the strength and fatigue requirements of your system’s operating environment. Subsea wells are generally a simple design, comprising of a wellhead, conductor and a series of casings, however they require detailed engineering and analysis as a result of their exposure to a wide range of loads affecting response and strength. The well’s architecture, environmental conditions, water depth, rig and type of operation all influence the final design of the wellhead and conductor, and the selection of rigid or non-rigid lockdown wellheads, the interaction between casing strings, cement conditions and wellhead stick-up heights also need to be considered. We understand that the increased criticality of wellhead behaviour arising from use of new generation vessels with large BOP’s, more challenging wells and the drive to maximise recovery presents significant wellhead system design challenges. Fatigue has become an important design consideration that may require changes to conventional casing and conductor joint arrangements, improved fabrication details and the use of fatigue enhanced connectors in the conductor and surface casing. The increasing challenges in subsea wellhead system design have led to the widespread use of in-service monitoring to confirm fatigue response. Through extensive involvement in such programs and review of field data 2H is uniquely placed to ensure that project specific wellhead system design requirements are addressed safely and effectively. We have completed over 300 subsea wellhead and conductor design projects in water depths from 50m to over 3,000m. Key Services Conductor and casing installation analysis and envelopes Well axial loading and conductor length assessment Conductor jetting and drivability assessment Wellhead/casing interaction analysis & cement shortfall assessment Conductor and wellhead life extension assessment Project Experience Shell – Asia-Pacific Drilling Program, Riser Wellhead and Conductor System Analysis Apache – North Sea Completion Operation Fatigue Assessment and Monitoring BP – Shah Deniz Wellhead and Conductor System Analysis Woodside – Xeres Drilling Riser and Wellhead System Analysis and Monitoring BP – Schiehallion Wellhead Strength and Fatigue Assessment Total – Dalia Non-Rigid Lockdown Wellhead System Analysis Shell – North Benbecula Drilling Riser and Conductor Analysis Share this page Share on FacebookShare on LinkedinShare on Twitter Services Deepwater Production Systems Riser Concept Engineering Steel Lazy Wave & Catenary Risers Top Tensioned Risers Hybrid Risers Flexible Risers, Flowlines & Umbilicals Composite Risers Subsea Flowlines & Jumpers Subsea Umbilicals System Verification & CVA Integrity, Life Extension & Monitoring Riser Integrity & Life Extension Subsea Wellhead System & Life Extension Machine Learning for Riser Engineering Riser System Digital Twin Riser Monitoring System Engineering Riser Inspection, Maintenance & Repair Subsea Incident Engineering Fracture Mechanics and ECA Offshore Renewables & Alternative Resources Fixed Offshore Wind Floating Offshore Wind Moorings & Anchors HV Cable Engineering Deep Sea Mining Drilling, Completion & Workover Drilling Risers Drilling Riser Management Subsea Completion & Workover Risers Subsea Wellheads & Conductors Offshore Platform Conductors Platform Well Integrity & Life Extension Well Engineering Well Plug & Abandonment Minimum Facility Platforms Conductor Supported Wellhead Platforms & CoSMOS Monopile Wellhead Platforms Exploration to Early Production Systems Structural Engineering Services Installation Engineering Decommissioning Engineering Riser Delivery Management Component Detailed Design Mechanical Connectors Systems & Qualification Testing Related WEB PAGE Drilling Risers See all Services TECHNICAL PAPER Design of a Monitoring System for Determining Subsea Wellhead Fatigue Utilisation See all Technical Papers TECHNICAL PAPER Measurement of Wellhead Fatigue See all Technical Papers