Home About us Contact En poursuivant votre navigation sur ce site, vous acceptez l’utilisation de Cookies. Pour en savoir plus et pour découvrir comment les supprimer ou les bloquer, voir : Our Cookie Policy Seal Engineering Our Activities Risers Hybrid Riser × Design of Hybrid Riser systems SEAL Engineering is the Centre of Excellence within the TechnipFMC group for the Hybrid Riser systems. We develop new concepts and perform the detailed design of hybrid risers to allow fields development in harsh environment and ultra-deep waters (-4000m). Rencent publications: 2016: Cost-Effective System for Deep Waters” 2014: OTC Asia “Deep Water Hybrid Riser Systems”, paper n°OTC-24802-MS Close Water Intake Riser × Water Intake Riser (WIR) SEAL Engineering has performed the detailed design of Shell Prelude FLNG, Water Intake Risers (Shell patent). Based on this experience, we have developed alternative flexible Sea Water Intake Risers at FEED stage to numerous O&G Companies. Recent projects: 2010-2016: SHELL FLNG Prelude – Detail design of 150m long water intake riser bundle (FEED + EPCI) Close Other systems × Other types of riser systems The design of all types of riser systems is part of our core business, including Catenary or Lazy-Wave Risers. We analyse and size the full range of existing risers as well as conceive innovative ones in order to provide cost effective and enabling technologies to our clients. Recent projects: 2016: ENI/Technip Zabazaba (Nigeria) – SLWR preliminary design for tender purpose. 2013 – 2016: SHELL FLNG Prelude – Detail design of 150m long WIR bundle. 2013: PETROBRAS/Technip Carioca – Steel Lazy Wave Riser system FEED study. Close Subsea architecture Field Architecture × Field Architecture SEAL Engineering has led several projects, from concept to detailed engineering, with definition of the field architecture taking into account multiple constraints such as: – Client development strategy, – Fluids to be produced, injected and exported, – Flow assurance requirements, – Design life, water depth and geographical locations, – Economic, planning and installation constraints. Recent projects: 2010: TOTAL Kaombo Pre-Project (Angola Block 32) 2009: ENI Bouri Phase II (Lybia) Subsea development alternative FEED study Close Flowline × Flowline Rigid flowline analysis is a wide domain of study from basic analysis (i.e. wall thickness design or expansion analysis) up to advanced and current industry practice development (i.e. lateral buckling or pipe walking analyses). Our domain of expertise covers every type of flowline and installation methods, such as Reel-lay, J-lay or S-lay of single pipe or pipe-in-pipes (PIP), from shallow to ultra-deep water. Our domain of expertise covers every type of flowline such as Reel-lay, J-lay or S-lay installed, in single pipe or pipe-in-pipes (PIP), from shallow to ultra-deep water. In particular, we can point out our strong expertise in lateral buckling analysis where full methodology based on SAFEBUCK JIP and Technip Group standards was developed upon Client satisfaction. Recent projects: 2014-2016: TOTAL / Technip Kaombo – Detail engineering of 290km deep water flowlines 2013: TOTAL Badamyar – 16″ gas production pipeline pre-project design 2012-2013: SONANGOL / Technip Punja – Shallow water pipeline Close Installation × Installation SEAL Engineering carries out all types of offshore installation analyses related to loading, sea-fastening, transportation and deployment, from shallow to deep water. With dedicated fluid dynamics and time domain softwares, we accurately model the dynamic responses of vessels, the rigging stiffness and all hydrodynamic loads applied on the lifted subsea equipment, including phenomenon occurring during the splash zone crossing. Purpose is to define the Dynamic Amplification Factors (DAF) and safe operating windows. All results are transcribed through detailed and straightforward installation procedures and work plans. Installation can be followed-up by experimented installation engineers, allowing us to deliver high Safety & Quality services for offshore equipment installations. Recent projects: 2014: EXXONMOBIL / BOURBON Installation of supplemental tether system on the Kizomba B Single Hybrid Riser 2014: EDF Energies Nouvelles / TECHNIP Provence Grand Large Wind Turbines Installation Studies. Close Spool / Jumper × Spool / Jumper SEAL Engineering has a strong expertise in rigid spools and jumpers analysis: – Mother pipe and bends wall thickness design, – Bends ultimate capacity in bending & collapse conditions (Finite Element Analysis), – ‘Mechanical’ design of spools (using a fully validated automatic script within ANSYS, including non-linear soil effects, in extreme and fatigue conditions), – Modal analysis and VIV assessment, – Slugging analyses (irregular train of fixed or variable slugs with Flexcom), – Transportation, lifting and lowering down to seabed analysis, including rigging definition, – Specific equipment definition, specification and vendors follow-up (e.g. buoyancy modules, subsea connectors), – Detailed drawings, from pre-fabrication up to post-metrology assembly drawings. Recent projects: 2014 – 2016: TOTAL Kaombo rigid spools (Angola Block 32) 2007 – 2016: TOTAL Dalia (Angola) detail design and isometrics of the well jumpers. Close FLET / ILT × FLET / ILT FLET (flowline end termination) and ILT (in-line tee) are tie-in structures that allow flowline connection, e.g. using spool pieces or well jumpers. SEAL Engineering has extensive track record of FLET/ILT design fitted to the specifics of projects such as: – Installation method and vessels, – Soil conditions, – Flowline expansion, – Lateral buckling, etc. Our expertise covers the whole scope of work concerning the design of such structures: – From concept to detail and marking drawings, – Structural validation in-place and during installation, – Stability on soil, – Local analyses of forged elements and installation aids Recent projects: 2014-2016: KAOMBO (TOTAL E&P Angola Block 32) detailed design 2011: PETROBRAS / Technip Cascade & Chinook PLET detailed design Close Mooring System × Mooring System We offers broad expertise in the design of varied mooring systems for the offshore industry, including but not limited to FPSO, offloading buoys and floating wind turbines. Our mooring system designs propose fully integrated solutions suiting any floating vessels. From the seabed anchoring points to the connectors we develop solutions based on the association of chains and high-performance synthetic ropes developed for harsh marine environments. Our dynamic softwares allow to accurately model the 1st and 2nd orders wave induced motions of the full mooring system in specific marine environmental conditions, integrating the hysteresis properties of synthetic ropes and non-linear phenomenon of tight chains. Recent projects: 2014: EDF Energies Nouvelles / TECHNIP – Provence Grand Large Wind Turbines Installation Studies. Close Structures Installation equipment × Installation equipment SEAL engineering designs high quality integrated and customized installation equipment for the deployment of all subsea components, suitable for any vessel capacities. Our expertise covers all pipe-lay equipment used for S-lay, Reel-lay and J-lay installation methods, as well as specific installation aids for the deployment of steel, flexible or hybrid risers in ultra-deep water. Our subsea installation equipment is designed to propose light and robust solutions, being ROV friendly in harsh marine environments. Upon request, installation equipment can be equipped with monitoring system to guarantee a higher level of safety during the final subsea approach, positioning and landing sequences. Recent projects: 2014: EXXONMOBIL / BOURBON – Installation tools for deployment of supplemental tether system on the Kizomba B Single Hybrid Riser (SHR) Close Trussed structure × Trussed structure Our experience includes different types of steel trussed structure, from installation vessel over-boarding chute experiencing high dynamic loads, travelling gantry with 500t winch support frame to jacket platform structures. Recent projects: 2009: ENI / TECHNIP BOURI phase II, platform (and pipelines) FEED study Close Pressure vessel × Pressure vessel For the development of deepwater hybrid riser concepts, we perform design of pressurized or equi-pressurized buoyancy tanks to be submerged e.g. in the range of 100-250m water depth and to develop sufficient net uplift to support and tense the vertical riser section (e.g. up to 1000-1800t range). For a safe and robust design, we propose compartmented buoyancy tanks with flat of dome bulkheads. Manifold/valves/piping used for the filling & venting operations are integrated inside the compartments to obtain a ‘’flush wall’’ tank, limiting the entanglement/damage risks during handling and deployment phases. Recent projects: 2009: PETROBRAS Cascade & Chinook design of five Buoyancy Cans. 2014: BP / Technip Block 18 preliminary design of Single Leg Hybrid Risers (SLHR). Close LNG loading system × LNG loading system SEAL Engineering develop Innovative solutions for offshore LNG loading operations, including compliant transfer system to fit relative motions (e.g. between FSRU – floating storage and regasification unit – and LNG carrier). These systems consist of cryogenic aerial hoses accommodating larger vessel relative motions and hence increase the cryogenic gas offloading operating windows. Recent projects: 2006: TECHNIP, GOLAR LNG, Dynamic analyses of the Amplitude LNG Loading System (ALLS) during LNG transfer operations. 2017: TECHNIPFMC, BUNKERING OFFSHORE ARM (BOA), Structural verification (FEA) to validate new articulated mechanism developed by TehnipFMC. Close Foundation design × Foundation design SEAL engineering designs a variety of foundations, emphasizing on structural integrity and soil structure interaction: Shallow foundations such as mudmats Suction piles Gravity based foundations for heavier and stable structures Design of foundations is not limited to the oil and gas industry as SEAL Engineering has experience in designing custom foundations for innovative wind power and current turbine projects. Recent projects: 2010: Voith Hydro Ocean Current Technology, 1MW current turbine foundation & installation conceptual study. 2006 – 2007: EDF, Marine current turbine farm (30MW) conceptual design, pile and gravity base foundation design, fabrication & tow-out, installation and budget analysis. Close Forged pieces × Forged pieces Most of subsea structures (e.g. FLET/ILT, riser top & lower riser assembly, PIP bulkhead) include forged pieces and are to be checked against the relevant structure / flowlines / risers Oil & Gas industry codes. SEAL Engineering has developed powerful and efficient tools to extract environmental and structural loads from global analysis and then perform these structural solid models in finite element analysis (FEA). Recent projects: 2008: PETROBRAS / Technip Cascade & Chinook – Tether Chain detail design 2013 – 2015: SHELL FLNG Prelude – Detail design of water intake riser bundle 2014 – 2016: TOTAL / Technip Kaombo – Flowlines, FLETs / ILTs and rigid spools detail engineering Close Environment & other energies Wind Turbine × Wind Turbine SEAL Engineering provides its strong marine environmental expertise to follow-up the development of offshore wind farms. Our experiences on harsh marine environments and our recognized offshore structure expertise, we develop Finite Element (FE) models to determine all fluid/structure interactions in order to provide the resulting loads and motions in all components of the wind turbine. Based on these results, we propose adapted mooring systems and installation procedures which fit with local offshore means and capacities. Recent projects: 2017: BOURBON – FLOATGEN project – Mooring & Reaction lines definition (Drawings) – Umbilical overboarding chute design (Floating wind turbine on SEM-REV testing site) – Chain & Nylon overboarding chute design (Installation vessel) 2014: EDF EN – Provence Grand Large – Floating wind turbines installation procedures. Close Current Turbine × Current Turbine Seal Engineering developed specific systems and methods for the installation and in-place stability of current turbines. Our experience includes the design of specific floaters and lifting systems for transport and installation operations as well as different types of foundations. Foundation system consisting of gravity base, monopile structure or floating platform have been selected and designed to guarantee the structure stability in extreme sea conditions and to fit with local fabrication yards. Recent projects: 2014: France Energies Marines Routing and configuration of export power cables from current turbines installed in the Garonne River to the converter station. Close Oil spill × Oil spill Designed by starline / Freepik Close OTEC × OTEC Designed by starline / Freepik Close Our Expertise Dynamic Analysis FEA CFD Flow Assurance Software Codes Model Testing Dynamic Analysis SEAL Engineering has a strong expertise to lead complex dynamic analyses, such as: Time domain or frequency domain analyses, In extreme or fatigue conditions; Coupling of different excitation sources, including waves, currents, floating vessel motions, seismic excitations; Inclusion of non linearity such as seabed/pipe contact, pipe-in-pipe contact, centralizers-pipe or sleepers/pipe contact. Several softwares are available (e.g. Orcaflex, Flexcom, Deeplines, Diodore, Abaqus, ANSYS) with full suite of post-process scripts (e.g. Python, Mathcad, Excel) pending complexity of the system to be studied. Moreover within a constant objective to push forward the well-known conservatism of the current standards and best practices, dedicated ‘in-house’ numerical tools are regularly developed and coupled to commercial solutions (e.g. Orcaflex, Ansys, etc…) to address challenging topics and to finally propose fit-for-purpose design. Recent projects: 2013: Lula (Petrobras) FSHR 2012: Pre-Salt Risers (Petrobras), Free Standing Hybrid Riser (FSHR) & Steel Lazy Wave Riser (SLWR) systems were studied 2011: Prelude FLNG (Shell), riser design FEA Finite Element Analysis (FEA) is part of our core expertise, developed through long experience in almost all types of mechanical & thermal studies, (& sismic pre-study) We regularly perform analyses such as static structural analysis, linear dynamic analysis, modal analysis and steady-state thermal analysis. Our experience includes strength analysis of massive forged pieces, using solid body elements, as well as pressure vessel structures, like buoyancy cans, modelled with surface body elements. Fatigue analyses of trussed structures (e.g. jacket platform, spreader beam) using line body elements under complex subsea environmental loadings can also be performed. We are equipped with premium software (e.g. ANSYS, Abaqus) associated with powerful computers / processor capacity. CFD SEAL Engineering CFD team is part of the TechnipFMC Group expert network and is involved into the main company developments & studies, i.e. from R&D and conceptual projects up to detailed engineering phases. CFD expertise has a transversal fonction and provides solutions for riser systems, flowlines & spools design, installation engineering, as well as renewable energy developments. CFD tools fulfil several function, including assessing specific hydrodynamic coefficients of studied items in order to decrease conservatism of dynamic analysis or assessing the behaviour of innovative and challenging concept developments (e.g. Water Intake Riser, Ultra Deep Water Riser systems). More generally, our CFD expertise is used to address the following topics: External hydrodynamics and internal single or multi-phase flows; Free surface & wave dynamics; Thermal aspects; Coupled physics including fluid structure interaction such as Vortex Induced Vibrations (VIV) or hydro-elastic instability. Our CFD capabilities has been built based on strong relationships and collaborations with academic laboratories & universities, which are worldwide recognized as expert in their own field of expertise. These strong synergies and long-time collaborations bring the following advantages: Strong CFD modelling experience; Large application spectrum; Access to powerful external computational resources as required; Critical expertise on challenging topics. SEAL Engineering is currently involved in several Joint Industry and R&D projects, which put us at the leading edge of the new technical developments of the energy industry. Flow Assurance Flow assurance is key expertise in the development of flowline systems because it ensures that transported fluid will be received at the host facilities as specified by the downstream process. Complete line systems are analysed with multiphase flow simulators for hydraulic and thermal performances during the different phases of system life, e.g. : Start-up Shut-down Blow-down Warm-up Pigging Slugging SEAL Engineering also focus on the R&D aspects in flow assurance particularly using CFD for: Internal flow (slug, pressure drop in complex geometry etc.) External flow (e.g. oil spill) Recent projects: 2013: Oil spill emergency containment concept 2012: PUNJA flowlines FEED Software SEAL Engineering is equipped with numerous powerful workstations and a dedicated calculation server. The following commercial software are available with up-to-date revision or on demand*: FEA Ansys Abaqus-Simulia CFD/FSI Lemma-Ananas Ansys/Fluent/CFX * ENGINEERING PTC Mathcad Python SUBSEA ANALYSIS OrcaFlex Flexcom Deeplines/Diodore/Isymost/NSO SACS Shear7 Olga * DESIGN AutoCAD Inventor 3DS Max SolidWorks STANDARD Microsoft Office 365 Skype for Business Adobe Acrobat Network interconnection Several in-house software and developments (e.g. based on python routines) are also available for specific purposes, including CFD / Orcaflex coupling (fit-for-purpose hydrodynamic coefficients). Codes Our engineering designs follow the Standards and Codes used in the Oil & Gas industry or specified by our clients such as: American Petroleum Institute International Standardization Organization Det Norske Veritas (Norway) Germanischer Lloyd (Germany) Bureau Veritas Eurocodes Norsok Standards ASTM American Society Mechanical Engineers We are also applying the specific standards of our clients such as: TOTAL’s General Specifications SHELL’s Design and Engineering Practices TechnipFMC’s Principles & Standards (GOPS) EXXON’s Global Practices Etc. Model Testing Model testing is a key step within the dynamic analysis and engineering process. It allows validating conceptual and numerical studies as well as extracting key physical drivers for further detailed engineering. SEAL Engineering has a strong expertise in experimental set-up and model testing specifications for wind tunnel tests, basin tank test and multi-phase flow testing. Our engineers are directly involved in the experimental set-up definition working together with the operators of the different experimental facilities (e.g. OCEANIDE, Marintek, Marin, CSTB, BMT, etc.). This expertise lies on a strong track records focusing on various topics, such as: Riser VIV – Buoy supporting Riser VIM / VIR Floating structure RAOs definitions Subsea structure hydrodynamic characterization (Wind tunnel & basin tanks) Our Clients Legal notice | Contact