Olympus TLP – Challenges and Considerations of Designing a Deepwater Venture for a 45 year Production Life

Fulton, David; Johnson, Darin; Kamal, Rajiv; Kite, Mark; Ting, Meng-Sing; Lindsey, Mark

doi:10.4043/25446-ms

Day 2 Tue, May 06, 2014 2014

DOI: 10.4043/25446-ms

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Olympus TLP – Challenges and Considerations of Designing a Deepwater Venture for a 45 year Production Life

David Fulton

Darin Johnson

Rajiv Kamal

et al.

Abstract: The Olympus Tension Leg Platform has been designed for a 45 year service life, consistent with the depletion plan for this offshore Gulf of Mexico Mars field. This is an increased service life when compared with the design basis of previous Shell Gulf of Mexico TLPs. This criterion manifested itself in several design and physical considerations for the project infrastructure which will be discussed. Key elements of infrastructure reviewed include:• TLP Structure • Tendons and Foundations • Top Tensioned Risers… Show more

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Malikai TLP: Collaboration in Design and Delivery of the Malikai SCCTTR

Aramanadka

Hafernik

Power

et al. 2018

Day 2 Tue, May 01, 2018

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Floating vessels with dry tree production equipment are large capital expenditure projects with multiple interfaces often spanning several entities, including the Operator, Engineering Procurement and Integration Contractor (EPIC), Rig Builder, Production and Drilling Top-Tensioned Riser (TTR) supplier, Subsea Wellhead supplier, and Surface Wellhead/Tree supplier. Design and Interface Management play a significant role in the success of a project of this magnitude. The Shell Malikai Single Combo Casing Top Tensioned Riser (SCCTTR) was successfully deployed and commissioned on the first TLP in Malaysia. The Malikai SCCTTR is an industry first and an example of innovative design configuration coupled with rigorous project execution to deliver a system that is an enabling technology for current industry market conditions. The SCCTTR is a single riser used first for drilling and then remains in place for the full field life. This provides significant cost savings, both in hardware and operational time for large field developments, but introduces technical challenges to meet the requirements of both traditional drilling and production/water injection risers. This paper presents key design challenges to meet the requirements for ‘multi-purpose’ configuration and identifies how they were addressed to accomplish the project goal of flawless delivery. Project management was a key factor in achieving this goal. Shell chose a one-stop solution for delivery of the subsea wellhead and SCCTTR which provided advantages in management of interfaces and overall delivery. While this minimized interfaces, it still required a significant effort to coordinate components from multiple continents to deliver a single system. In addition to project management, the system required innovative design, as illustrated by the tensioner system, which introduced new features such as deflection absorbing bearing pads to limit the impact of the SCCTTR on the TLP hull design. Even with the additional features, the new tensioner system was designed, manufactured, and qualified within the project schedule. The Malikai SCCTTR stands as a testament to what can be accomplished when innovative design approach is coupled with robust project management and collaborative efforts between operator and equipment suppliers.

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Malikai TLP: Collaboration in Design and Delivery of the Malikai SCCTTR

Aramanadka

Hafernik

Power

et al. 2018

Day 2 Tue, May 01, 2018

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The Tension Leg Platform: from Hutton to Big Foot

Leverette¹,

Hodges

2020

Day 2 Tue, May 05, 2020

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This paper is one of seven papers that will be included in the special session: Floating Memories – Look Back to Leap Forward. The focus for this paper is on the Tension Leg Platform (TLP), one of the four major platform types that include the Floating Production Storage and Offloading platform (FPSO), the semisubmersible floating production system (Semi) and the Spar platform. The paper summarizes the evolution of the TLP over three and half decades, and provides a thirty-five year retrospective of the progression of TLP technology, including hull shapes, tendon connectors, flex elements, and riser systems. It will walk through the evolution of understanding, analytical methods, and model testing to assess the complex global performance of a TLP, and the unique challenges of system dynamic resonant excitation, the so-called "ringing" and "springing" phenomena. The TLP was a game-changer in bringing dry tree wells to floating platforms, leveraging dry tree drilling and well control methods from a generation of fixed platforms, and enabling multiple top- tensioned production and drilling risers in close proximity due to the limited tensioner stroke not possible on a drill ship or semisubmersible. The TLP has shown its applicability in water depths from the Hutton TLP (1982) in barely 150 m of water in the North Sea, to the Big Foot TLP installed in 1584 m of water in the Gulf of Mexico in 2018, the deepest TLP to date. And it has shown its flexibility in size ranging from the smallest mini-TLP's of 10,000 tonnes displacement, to the North Sea concrete hulled Heidrun TLP of 290,000 tonnes.

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Olympus TLP – Challenges and Considerations of Designing a Deepwater Venture for a 45 year Production Life

Cited by 2 publications

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Malikai TLP: Collaboration in Design and Delivery of the Malikai SCCTTR

Malikai TLP: Collaboration in Design and Delivery of the Malikai SCCTTR

The Tension Leg Platform: from Hutton to Big Foot

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