Top Tensioned Riser (TTR) Engineering Integrator Supply Model
EVENT: DOT
1 Nov 2012
Top Tensioned Risers (TTRs) have an established track record for deep water applications in the Gulf of Mexico (GoM), West Africa and Indonesia. However, TTRs are challenging due to their complex and highly iterative design, weight control and multiple interfaces due to numerous nonstandard equipment packages. Interface management and control is critical for successful project execution and hence a ‘systems’ approach to engineering, procurement and integration is highly beneficial.
A commonly used model for the engineering and procurement of TTRs is through an Engineering, Procurement & Construction (EPC) contract. An alternative approach is to use a riser engineering integrator to develop the system design, procurement packages and provide follow-on engineering support and fabrication management. The riser engineering integrator model allows the Operator more influence and flexibility to develop an optimized riser system and minimize the impact of changes during the course of the project. The model is currently being utilized for a high profile deep water GoM TTR development.
This paper presents an overview of the riser engineering integrator model for a top tensioned riser and compares it to the EPC approach highlighting the technical and commercial advantages and disadvantages between models.
Authors
Ricky Thethi
Global Director, UK
About
Ricky is a Global Director based in 2H's London office having relocated from Houston in 2019 after spending almost 20 years in 2H’s Houston office as part of the management team.
Ricky is responsible for globalising the company’s integrity engineering capability and business across all of its offices in both the oil and gas and offshore wind sectors. One of his current focuses is digital transformation, including the use of machine learning and automation technology to improve the speed and accuracy of structural analysis, integrity monitoring and life extension.
Ricky obtained his degree in civil engineering with first-class honours from the University of Surrey in the UK, and is a fellow and Chartered Marine Engineer of the Institute of Marine Engineering, Science and Technology.
Insights
Pete Padelopoulos
Senior Technical Consultant, USA
About
Pete is a Chartered Engineer with over 20 years’ experience in deep water riser design, manufacturing, testing, supply and offshore installation. He has multiple years’ project management experience managing pre-FEED, FEED, detailed design and equipment delivery scopes of work with teams of 5-25 engineers. He has also been seconded to operators as part of the technical site teams responsible for riser equipment delivery.
He has extensive experience with engineering, procurement, construction and installation of subsea and deep-water riser systems (SCR, SLWR, TTR, free-standing, flexible and drilling) with emphasis on component design and specification, package management, fabrication, qualification testing, delivery management and offshore installation. He has personally overseen the delivery of bespoke push-up tensioner system and integrally forged/machined tension joints focusing on the technical oversight of supplier design and complex manufacturing processes of components, overseeing design qualification testing, final assembly and hull integration and commissioning.
