Elegant solution, highly functional drilling and workover operations. Guide to fpso floating production storage and offloading. Fpso internal turret integration nevesbu designed and engineered the structural integration for an internal turret mooring for bluewater energy services. External turret mooring system are employed by modifying tanker in the bow area. Fpso fpsos are eff ecti ve in remote or deepwater areas, as they are easy to install and do not require a local pipeline infrastructure to export oil. In the initial fpso designs an external turret with a simple swivel connected to a flexible riser was commonly used. A new thruster assisted mooring system, design and control. It can be used for harsher environments and allow for the inclusion of a greater amount of risers. Anchors vessel at geostationary position allows vessel to weathervane provides conduit for fluid transfer subsea reservoir infrastructure to topside processing plant 64. May 17, 2020 but the design of the external turret make it easier to be mounted on tankers converted into fpso.
Research and design on internal turret mooring system of. Keppel shipyard hull conversion, turret fabrication, topsides integration. Even though offshore borneo is part of south china sea, the environmental. Terry knott talked to fmc sofec about a new design approach for very large turrets. Pdf 1 spread moored or turret moored fpso s for deepwater. As a majority of the steel renewals will take place in the cargo block. Bluewater has designed, installed and operated floating production storage and offloading fpso installations worldwide selecting the best approach and application to meet client specifications. The ship integrated turret sit is an innovative and. Floating production storage and offloading an overview. In most fpso conversions, the basic structural arrangement is kept intact in way of the cargo block region, whereas in the turret region there are major changes and additions to account for the mooring loads, risers, bearings etc. The new design criteria for mooring system of fpso in south china sea is updated and the mooring system design is completed based on the updated design criteria. Since then, the flexible turret has been used on several fpso s located in brazil.
Internal turret system is a turret system that is integrated into the hull structure at the bow of the vessel. The riser azimuths are undetermined, and the worst direction selected for the feasibility assessment. Pdf on feb 16, 2016, yanbin bai published prediction of design loads for structure design of fpso turret find, read and cite all the. Turret structural design shall, as a minimum, meet the same uls design criteria 102 per year probability of exceedence event as the hull in which it is to be installed. Model testing, especially for turret moored fpsos, can prove particularly beneficial if properly planned. The m350 hull is designed to operate in different environmental conditions prevailing around the world.
This petroknowledge fpso training course will focus on the key design concerns, technical challenges, critical drivers and risks associated with the execution of the fpso project. Global analysis of the terra nova fpso turret mooring syst. Fpso with turret mooring system in malaysia seawater, especially in offshore borneo. The research and design procedure and method for internal turret mooring system of fpso in south china sea are summarized too. The methodology presented in this paper applies to both disconnetable and permanent internal turret. Our personnel have gained considerable experience in the design and fabrication of internal and external turret mooring systems prior to and since the inception of orwell offshore in 2006. Our selection of bearing material was crucial, says dunston.
Deeper waters, larger fields, more wells, bigger fpsos. The development of the stl technology was a result of a demand in the market for loading systems with high availability in harsh environments. Challenges and opportunities for conversion lng fpso. Proper fpso hull and mooring designs can improve production. The fluid swivel, piping, turret structure and chemical stores can therefore be damaged. However, recent experience has shown that the mooring system for several deepwater fields have been designed without taking into account all the relevant. Pdf prediction of design loads for structure design of fpso turret.
Topside structural, piping design and piping engineer. Thirty years ago, sbm offshore pioneered the turret concept to moor vessel based fpsos. The flow lines at sea bed are manifold in order to reduce the number of risers coming to turret. Turret mooring system mooring turret is unique fpso feature serves three purposes. The development of the stl technology was a result of a demand in the. From a mooring designers perspective, a key component of the design of a deepwater spread moored fpso is the integrated design of the mooring system with the vessel hull and topsides, riser and flowline systems, and the field layout. The production facility and gas export pipeline are the deepest in the industry c. We pioneered the sevan ssp hull as a cost effective alternative to traditional ship.
The tanker hull was designed by using the maxsurf software. Amog contracted to assist during the development of a column turret mooring system to be integrated into an fpso at a ship yard in singapore. Fpso design and technology this course is designed, developed, and will be delivered under iso 29990. The structural design shall be performed in working stress design format and shall use the same uls design safety factors as the hull. This document provides an independent assessment of established and emerging designs of turret and swivel systems for fpsos and fsus and. From front end design and engineering solutions, to superior technologies and integrated systems, we can provide turnkey solutions and dedicated support throughout your entire project anytime, anywhere. Being able to be moored permanently when wanted and disconnected form the moorings according the needs of the managements gives the fpso a wide range of operating situations rob potthurst 2003. The following key points were considered while designing this project. The investigation of internal turret single point mooring slip ring. Asgard designed by maritime tentech and operated by.
The training course will guide the participant through all the phases of the fpso project from concept design to handover. Research and design on internal turret mooring system of fpso. The turret, along with all of the process and electrical swivels required, introduces cost and complexity to a shipshaped fpso design, however it does give a shipshaped fpso the ability to disconnected and manoeuvre from potential harm of icebergs and ice, and then subsequently. Since then weve installed nearly 50 turrets around the world. We pioneered the sevan ssp hull as a cost effective alternative to traditional shipshaped, turret moored designs. Safety assessment of fpso turretmooring system using. Pdf prediction of design loads for structure design of fpso. Hull conversion and moorings similarity to oil fpso 9 hull system robust tanker design maintenance and repair history trading history accurate forecast of future corrosion and fatigue damage o corrosion rates o fea modelling suitable for full design life without dry docking or offshore steel renewals turret mooring system. Sevan ssp is a specialized marine engineering and design house. The processing equipment aboard the fpso is similar to what would be found atop a turtet platform. Many risers including umbilical lines are arranged longitudinally in the outside of fpso. The design basis has resulted in the design of the first disconnectable turret mooring system that is required to stay connected in a severe 100year storm environment, and be otc 11914 global analysis of the terra nova fpso turret mooring system arun s.
Innovative solutions, such as the employment of cargo. A key element of bluewaters strategy is the use of experience gained from earlier generation fpsos and continuous worldwide field experience in. Mooring design and arrangements turret and swivel surf and subsea interfaces fpso topside process system day four other design requirements. The structural design developments of riser itube support. The impact of green water on fpso design otc offshore. Theoretical study on effect of turret location on dynamic.
Ibc fpso training course perth november 2005 introduction to fpso design and technology duncan peace crondall energy crondall energy duncan peace introduction to fpso design. Sbm has also developed a recognized expertise in riser system definition including steel riser detailed design. The fpso is turret moored with steel catenary risers connected to the turret with flex joints. Developed from a unique modularized design, these units are available sit. The turret is based on sbm offshores proprietary bogiebearing design and represents the third in a series of large turret mooring systems for bp. Sofec announced today that first steel was cut on december 26th, 2020 for the turret mooring system for the rssd joint venture fpso. Environmental influences affecting fpso design hull design topside design requirements and layout structural design and global analysis configuration of the topside supports day 3 station keeping and topside process mooring design and arrangements anchors and their particulars turret and swivel system surf.
Turret moored fpso systems are sensitive to the effect of waves, wind and current. The flexible turret concept was developed in the mid 1990s when sbm offshore was contracted to moor two large deepwater fpso s with a large number of risers offshore brazil. Floating production storage and offloading systems cost. In terms of design, most fpsos take the form of a supertanker and it can be difficult to distinguish between the two. Prediction of design loads for structure design of fpso turret. Apl has grown from about 10 employees in the start to close to 200 today. Engineering ice group is europes largest independent ship design consultancy. Design of fpso systems for reuse, decommissioning offshore. Fpso brasil number of slots 30 to 47 water depth 780 m to 1,360 m hs 100y 7. Cnoocs fpso used in chinas waters, its singlepoint mooring system and electric slip ring are all monopolized from design to processing and. The turret, along with all of the process and electrical swivels required, introduces cost and complexity to a shipshaped fpso design, however it does give a shipshaped fpso. Sensitive analysis of different types of deep water risers to.
Customized design using standard components and design philosophies to offer the highest level of functionalities, large. Feasibility of the electrification of fpso vessels. For more information and data about oil and gas and petrochemical projects go to project smart explorer. The fpso also boasts one of the most complex mooring systems ever built. An fpso turret system is exposed to a variety of demanding load conditions. The defining visual difference of an fpso is the processing equipment that is stored aboard the vessels deck. Mar 14, 2014 turret and mooring systems design chapter 3 63. Numerical modelling of disconnectable turret mooring. The turret is designed by using the solidworks software. Longer fpso design lives larger and heavier topsides larger storage requirements larger accommodations to support campaign maintenance m350 mooring system options. Mooring is done through external turret in order to tackle the harsh. The environment of the fpso determines the type of turret used. The turret will be entirely above water level at all times. But the design of the external turret make it easier to be mounted on tankers converted into fpso.
The subject field of development is located in 800m water depth, west africa. We provide highcalibre multidiscipline design services to yards and owners in the commercial shipping, defence and o. Quad 204 is a true stepup in stateoftheart turret technology for two reasons. The axial bogies and the radial wheels have been based on a proven turret bearing system design. Due to a large number of risers, heavy seas and the ships special design, this was to be an. This is a preliminary concept design of an fpso supposed to explore the oil fields in norwegian sea. Learning methods elearning course duration 3 hours targeted participants these elearning courses are aimed at technicians working in the upstream oil and gas industry. The aim of this paper is to present a brief description of the systems which compound cairu fpso, their main requirements, the most relevant difficulties and solutions adopted.
The course covers the following areas regarding fpso designs and operations. The other design features include such items as possible turret based mooring, deckmounted hydrocarbon processing equipment, etc. Leveraging decades of experience and competency in risk management, project execution, and delivery, combined with internationally. The arrangement of the turret system will allow diverless installation of anchor lines and risers. Fpso turret mooring and riser systems for the gulf of mexico n turret systems. Taking into account the tendency in several new fpso designs to place the accommodation superstructure forward of the turret at the bow, the impact of green water on fpso design will. Meanwhile, hydrocarbon storage facilities are typically situated below the hull. First steel cut on sofecs sangomar fpso turret mooring. All dimensions are based on the fpso kikeh main particulars. The surge in fpso projects in the early to mid nineties has significantly expanded the experience base in all of the key specialisms. This paper deals with the optimized load case selection and the design developments for constructability and fatigue criteria of the riser itube support structural design in an fpso.
Due to a large number of risers, heavy seas and the ships special design, this was to. Operating fully submerged, the lower turret bearing must be able to handle extreme loads while providing the means to allow the fpso to weathervane in accordance with prevailing weather. Turret mooring system design and analysisfor harsh environments. This ship was designed for the norwegian continental shelf. Aug 03, 2019 fpso turret pdf turret mooring system of fpso. Today both stl and stp systems are well established as the worlds first. Fpso turret mooring and riser systems for the gulf of mexico. Ibc fpso training course perth november 2005 introduction to fpso design and technology duncan peace crondall energy crondall energy duncan peace introduction to fpso design and. A leased fpso with a disconnectable turret and design capacity of 60,000 bopd, 30,000 bwpd, and 15 mmcfpd was employed fig. In the recent years, considerable research is being carried out on turret moored fpso system operating at offshore locations. Also riser pullin system rps is disposed for covering all risers. Fpso turret designs free ebook download as pdf file.
First turret moored fpso to accept steel lazy wave risers. Fpso are a much more desired platform due to the economical and convenience of it. Design basis safety in design and operation day two the fpso vessel environmental influences affecting fpso design hull design topside design requirements day three station keeping and process mooring design and arrangements turret and swivel surf and subsea interfaces fpso topside process system day four. There are four variants of the hull, each designed for a different. Pdf on feb 16, 2016, yanbin bai published prediction of design loads for structure design of fpso turret find, read and cite all the research you need on researchgate. The structural design developments of riser itube support in.
A central mooring system allows the vessel to rotate freely to tureet respond to weather conditions, or weathervane, while spreadmooring systems anchor the vessel from various locations on the seafloor. The uk offshore operators association has published a set of guidelines for the design of floating. The fso are mooring by even number of mooring chains i. Fpso design process the design process starts after the entire dimension of tanker and turret has been gathered. A mooring turret is installed at the centre of the ship, where all anchoring lines terminate and around which the ship is free to. Feasibility of the electrification of fpso vessels offshore. The fpso was selected in part to avoid the expense of laying a long oil line in extreme water depths lohr and pena, 2017. Extra space on deck has been kept spare for future modules for change in production or utilities.
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