Assessing Conductor and Casing Systems for Damage from Extreme Snag Loads Event: OMAE Date: June 2014 Author: Y. Arikan, R. Koska, J. Zlokich Conductor and casing systems for subsea wells can be damaged due to excessive loads caused by vessel drift offs and snag loads. These types of accidental loads on the conductor and casing system are uncontrolled in nature and hence difficult to predict. Therefore, designing the system for these types of loads can be very challenging and economically not practical. Additionally, in the event of an incident subsea, a conductor and casing system is permanently installed and cannot readily be retrieved or inspected once the damage is done. The decision to abandon or to produce from a well with a damaged conductor has serious financial and environmental consequences and should be fully understood. Therefore, to make a knowledgeable decision, it is necessary to understand extent of the damage and its implications for future operations by forensic analytical tools. This paper examines the methodology of a conductor and casing system damage assessment in order to support more informed decisions and provides a case example for a typical deepwater subsea well undergone excessive accidental loading. The objective of the assessment is (1) to verify wellhead system integrity and (2) evaluate the effect of any future operations on the integrity of the system. The paper outlines a process, suggested code checks, and analysis techniques which can be implemented to determine fitness for service of an excessively loaded wellhead system. If you would like a copy of this technical paper register to download it (pop-up form). All technical papers Share this page Share on FacebookShare on LinkedinShare on TwitterEmail Services Production & Export Riser Concept Engineering Steel Catenary Risers Top Tensioned Risers Hybrid Risers Flexible Risers Composite Risers Subsea Jumper Spools Subsea Umbilicals Deep Sea Mining Drilling, Completion & Workover Drilling Risers Completion & Workover Risers Subsea Wellheads & Conductors Platform Conductors Well Engineering Minimum Facilities Platforms Conductor Supported Wellhead Platforms & CoSMOS Riser Delivery Management Riser Monitoring & Integrity Riser Monitoring System Engineering Drilling Riser Management Anomaly & Incident Engineering Subsea Wellhead System & Life Extension Platform Well Integrity & Life Extension Inspection, Maintenance & Repair Subsea Engineering Services Component Detailed Design Decommissioning Engineering Engineering Critical Assessment Installation Engineering Mechanical Connectors Offshore Renewable Energy Qualification Testing Verification & CVA Well Plug & Abandonment Get the latest riser insights!Receive our riser news, published papers and blog posts in your inbox monthly.