Riser Systems for Economic Deepwater Well Intervention Event: Riser Systems for Economic Deepwater Well Intervention Date: June 1996 Author: S. Hatton Floating production with subsea completions is currently acknowledged as the favoured technology for development of marginal and deepwater reserves. It is a technology that has been in existence for over 10 years but has only recently been widely adopted in favour of more technologically complex systems such as TLPs and SPARs which facilitate surface completions. Floating production with subsea completions offer a number of key advantages such as a fast track schedule, low CAPEX to first oil and phased development. In the current economic climate these factors are an essential factor in maximising the NPV of an asset allowing project status to be achieved. Additionally, floating production is seen as a low risk solution, since the technology is well proven and can accommodate design changes without severe impact and is flexible to meet the completion and drilling requirements of a wide range of reservoir configurations. Unfortunately nothing is usually perfect and there is normally a down side. For floating production, the down side is primarily the high through life cost of well intervention and workover operations. Unlike the TLP and SPAR where well intervention can be conducted directly from the production facility, subsea completions require mobilisation of a rig to conduct workover of subsea step out wells. This method of workover is costly, due to high rig rates and long mob/demob durations, particularly if the intervention is unplanned. Future workover costs will increase, due to the increase in rig rates which is predicted over the next decade, particularly in deep water and also as developments move into harsh environments Learn more at www.2hoffshore.com which increases intervention durations and complexities. This may have a dramatic effect on the economics of existing subsea developments which may have been justified on the basis of lower rig rates. If you would like a copy of this technical paper register to download it (pop-up form). Back to All Technical Papers Services Production & Export Riser Concept Engineering Steel Catenary Risers Top Tensioned Risers Hybrid Risers Flexible Pipes & Risers Corrosion Resistance and Composite Risers Subsea Jumper Spools Subsea Umbilicals Deep Sea Mining Integrity, Life Extension & Monitoring | 2H Offshore Riser Integrity & Life Extension Platform Well Integrity & Life Extension Subsea Wellhead System & Life Extension Machine Learning for Riser Engineering Projects Riser System Digital Twin Drilling Riser Management Riser Monitoring System Engineering Riser Inspection, Maintenance & Repair Anomaly & Incident Engineering Subsea Engineering & Assessment Services Component Detailed Design Offshore Decommissioning Engineering Fracture Mechanics and Engineering Critical Assessment Installation Engineering Mechanical Connectors Offshore Renewable Energy Systems and Qualification Testing System Verification & CVA Well Plug & Abandonment Drilling, Completion & Workover Drilling Risers Subsea Completion & Workover Risers Subsea Wellheads & Conductors Offshore Platform Conductors Well Engineering Minimum Facility Platform Design and Engineering Conductor Supported Wellhead Platforms & CoSMOS Monopile Wellhead Platforms Exploration to Early Production Systems Structural Engineering Services Riser Delivery Management & Systems Engineering Get the latest riser insights! Receive our riser news, published papers and blog posts in your inbox monthly. * This iframe contains the logic required to handle Ajax powered Gravity Forms.