Offshore jacket design software

Seismic forces should be considered in platform design for areas that are determined. Study of fixed jacket offshore platform in the optimization design process under environmental loads. Study o f fixed jacket offshore platform in the optimization design process under environm ental loads taha nasseri 1, naser shabakhty 2, mohammad hadi afshar 3. Improve design quality and predict offshore structural. Offshore platforms have many uses including oil exploration and production, navigation, ship loading and unloading, and to support bridges and causeways. Overview structures that float near the water surface recent development s tension leg platforms s semi submersible s spar s ship shaped vessel fpso07302003 offshore platform design. Offshore jacket design the foundation for the wind turbine is built as a steel structure on four piles a robust solution when an earthquake shakes the subsurface. Final project report prepared for the minerals management service under mms awardcontract m08pc20002 mms project number 612 october 2009 analysis of potential conservatism in foundation design for offshore. Offshore structure design, construction and maintenance. Abstract the seismicinduced dynamic force is one of the most important excitations to be dealt with in the design of offshore jacket platforms.

Steel pipe piles are the typical foundation for offshore platforms. Sacs offshore structural analysis and design software. The study has shown that in general the use of iso series of standards for design of jacket platforms will lead to structures that meet the required safety level of norsok. The estimation of response parameters plays an important role in the design of offshore structure. Sesam is a world renowned offshore structural engineering fea software tool for design. Offshore structural analysis and design software achieve offshore structure compliance more quickly with the most comprehensive and uptodate international design code coverage available. Sesam software for offshore wind turbine foundation design and analysis is based on decades of experience in engineering of offshore structures. The comparison of the results between the manual and the simulation indicates the consistency of design and construction of the similar model and reliability of the manual design standards. Pilethroughleg concept, where the pile is installed in the corner legs of the jacket. Nsengi completed detailed design of the jacketsupported pier structure in just 18 months.

The buoyancy of the jacket was used for turning over the jacket during offshore installation. Concept design of steel bottom founded support structures. It was hands on all through the 14 days with sacs software. Most of the platforms are used in the shallow waters of the continental shelf, so 95% of the. How to design a jacket and its foundation with optimization. Offshore dimensions limited, plot 14a, adebayo doherty street, off admiralty way lekki phase one estate, lagos, nigeria. Integrated design optimization of jackets and foundations for. Analysis of conservatism in offshore foundation design. In order to perform a reliable design of a platform, it is important to obtain an exact evaluation of its dynamic. Skirt piles can be grouped in clusters around each of the jacket. A launch barge is a flat top cargo barge equipped with skid beams, a rocker arm, launch winches and a suitable ballasting system. In this paper, a new multiloop feedbackcontrol design is developed and applied to an offshore steel jacket platform. Jacket and foundation weights were calculated for water depths ranging from 30m to 60m and for three representative soil types. The wave climate for extreme storm events were derived from hind cast data according to the ultimate limit state and the study area.

Offshore structural engineering and marine structural engineering. It gives you the optimal basis for critical engineering decisions during the entire lifecycle of your asset, be it a topside, jacket, jackup, fpso, semi. Moses offshore platform design and simulation software. Introduction to the analysis and design of offshore. Improve design for operational safety through ship impact and dropped object analysis, and minimize risk through offshorespecific load generation. Environmental loads are analyzed for the offshore jacket platform. Offshore platform installation jacket installation and topside installation duration.

Topology optimization design for offshore platform jacket. Offshore structural analysis software ensure compliance with comprehensive offshore design code coverage in sacs offshore structure. The minimum diameter to thickness ratio of tubular members should be no less than 20, where the. Jacket structures, topsides, design, construction, metocean, geotechnical, loads, load combinations, piling, offshore.

Jacket design, launching and appending detail design of jacket structures including structural integrity and fatigue life calculation. Foundation engineering of jackets requires exceptional design and construction skills to cope with adverse geotechnical conditions and extreme operational and environmental loads. Loads on the jacket and foundation were estimated based on recommended design standards for offshore wind turbines, specifically from 50year extreme wind and the 100year extreme wave loading dnv, 2007. Ramboll provides costeffective solutions with constant focus on constructability, installation and structural safety. Integrated design optimization of jackets and foundations for offshore wind turbines kasper sandal chiara latini. Offshore structural analysis software deliver timely, compliant, and costeffective offshore engineering, marine operations, and vessel design projects with industry proven software. The petroleum structural engineering software is a technology used for offshore structural analysis and design.

The design of jacket foundations for offshore wind turbine typically relies on design loads from an integrated aeroelastic model of the full turbine structure and a reduced superelement. Mod01 lec37 structural analysis of jacket platforms. The installation methods for the jacket and the piles have a profound impact on the design. For more information on sacs offshore structural analysis. Cad software calculation for steel structures 3d offshore. Bentleys flexible, interoperable offshore design and analysis software shortened the design cycle time by enabling the design team to create simultaneous simulations for multiple design iterations, and helped reduce installation costs by optimizing the. Sacs, staad pro, staad offshore, mathcad worksheets structural jacket and topside pre service analysis the capability includes all preservice and inservice analyses and designs, including. Structural design of offshore jackets mtd publication.

Since this kind of software has become increasingly affordable to smaller design offices, the general acceptance of computer modeling and computer cutting is on the rise. Need to ensure code compliance for offshore structures. We can expect to see the computer cutting process employed for yacht construction more and more often in the coming years even for oneoff boat projects. Skirt piles through pile sleeves at the jacket base, where the pile is installed in guides attached to the jacket leg. Invaluable design software for offshore structures. Mod02 lec01 concepts of fixed offshore platform deck and jacket 1. Pl193 oil field jacket design and development of fixed offshore structure design tool software.

Offshore platform installation jacket installation and topside installation. Type of platforms fixed s compliant tower narrow, flexible framed structures supported by piled foundations. Sacs offshore structural analysis and design software youtube. The comparison between these two methods shows that dynamic boat impact and static boat impact analysis give us a similar impact force for a fixed offshore jacket and a static boat impact analysis is sufficient for the jacket boat impact analysis. Offshore structure design an overview sciencedirect topics. Jacket structures, topsides, design, construction, metocean, geotechnical, loads, load combinations, piling, offshore foundations, corrosion protection. In other words, bentley helped to create the literal foundation of this celebrated engineering project. Apply the automated workflows in sacs, the industry standard for offshore structural design. Caissons key component of the offshore jacket structure design. Feb 12, 2016 achieve offshore structure compliance more quickly with the most comprehensive and uptodate international design code coverage available.

Transportation, launching and appending analysis for offshore topsides in middle east, and far east regions. There are multiple types of offshore platforms depending on the applications and the depth of the water. It is necessary to design to limit offshore work to a minimum. Pdf study of fixed jacket offshore platform in the. There are basically three types of pile jacket arrangement see figure 3.

Offshore design company offshore engineering service. Nsengi completed detailed design of the jacket supported pier structure in just 18 months. The design of offshore piles is different from that of onshore piles because of the loading types, magnitudes and soil conditions. This is usually an economical, robust and well tested design with a long lifetime expectancy. Most of the design concepts have been adapted from the offshore oil and gas industry. This is the first application of a jacket structure for an offshore airport runway, and it could not have been designed in this timeframe without the use of bentleys sacs software to perform fatigue. Most of the platforms are used in the shallow waters of the continental shelf, so 95% of the offshore platforms in the world are jacket designed in these areas and where the water depth does not exceed 500 meters, these platforms may be anchored directly to the seabed. Keystone leveraged the technology developed for the offshore oil and gas industry to meet the complex design criteria for the jacket foundations. One of the most common offshore platform foundation designs worldwide, in the shallow and midwater depth segment, is the steel jacket structure. Transportation, launching and appending analysis for offshore topsides in middle east, and far east regions have been completed with more projects in the pipeline. In addition to that, a dynamic boat impact analysis can be carried also by software. Sesam is a world renowned offshore structural engineering software tool for strength assessment of fixed and floating structures, including mooring and riser systems, and pipelines. Concept modelling for design optimization in offshore structural engineering.

The substructures that will support the offshore wind farm. Ongc uses offshore design and analysis software to requalify. In shallow water, the steel jacket structure is the most common offshore platform fig. An overview of design, analysis, construction and installation of offshore petroleum platforms suitable for cyprus oilgas fields kabir sadeghi1 girne american university, department of industrial engineering, mersin 10, turkey abstract offshore structures are used worldwide for a variety of functions and in a variety of. Haritos the university of melbourne, australia abstract. We work to extend the life of assets and optimize owners opex. The iterative process optimized the jacket design and reduced the amount of steel needed for the substructure, while still ensuring a design life of more than 20 years. Pl193 oil field jacket design and development of fixed offshore structure design tool software offshore oil engineering co.

Using sacs and moses, offshore oil engineering developed an intelligent automated launch strength analysis technique that automatically analyzed the strength of the jacket during the launch sequence. Jackets an impeccable design is vital for offshore structures. Jacket structures that are too heavy to be lifted can be launched into the sea off a launch barge. Structural design of offshore jackets mtd publication w. Static analysis is done using the options available on the software which can take inputs for multiple loads and load details accurately.

This paper provides a broad overview of some of the key factors in the analysis and design of offshore structures to be considered by an engineer uninitiated in the field of offshore engineering. In general, for offshore structure design, major rolled shapes should be compact sections as defined by aisc. Jackets are designed to be either selfupending or upended with the assistance of a crane vessel. The problem is implemented in the special purpose software jadop jacket design optimization 7. Offshore design and analysis software assists wind farm. Feb 04, 2015 how can 3d modeling of any offshore structure help you design, detail and deliver more efficiently, safely and economically.

The ability to design the main element such as jacket, topside, helideck and boat landing offshore structure methods of construction and installation with loadout, seafastening and launching under water inspection methods and assessment for existing structure. Ii offshore structure design and construction paul a frieze encyclopedia of life support systems eolss offshore structure design and construction paul a frieze pafa consulting engineers, uk keywords. Via our classification and certification of offshore oil and gas platforms and floating units, bureau veritas supports offshore operators and service vessel owners to improve safety. This study is done by using sacs software for design and analysis.

Offshore platform design and simulation software moses. Introduction to the analysis and design of offshore structures an overview n. Many new offshore wind farms are soon to be constructed in taiwan and at these latitudes the turbine foundations must be able to withstand severe earthquakes and yearly typhoons. Let x describe the design, f x the cost, and g x the. Improve your analysis and design process for offshore structures with sacs. Many new offshore wind farms are soon to be constructed in taiwan and at these latitudes the turbine foundations must be able to withstand. Design and analysis of jacket substructures for offshore wind turbines article pdf available in energies 94. Offshore and marine engineering analysis, design software. Marine and general engineering offshore construction. Tekla software for all offshore structures youtube. How can 3d modeling of any offshore structure help you design, detail and deliver more efficiently, safely and economically. This study presents the development of software tool for integrated frame analysis and design of structural steel connections. These analyses resulted in a technology type factor that varies with water depth according to a 2nd order polynomial, and also with soil type. Marine multibody dynamics program for static and dynamic analysis of a wide range of offshore systems, including all types of marine risers rigid and flexible.

Topology optimization method is presented for offshore jacket platform design. The design and construction support engineering group within ocs supports the company with specific analyses related to the design of marine structures, pipelines and associated facilities and the related installation engineering. Apr 04, 2012 95% of offshore platforms around the world are jacket supported. Mod01 lec38 structural analysis of jacket platforms contd.

Most of the jacket type platforms designed for 25 years of service had outlived their design lives. Sacs offshore structure design and analysis software. Tudies about the steel jacket offshore structures has demonstrated that seismic forces were not given much importance in the design process. Sacs offshore structure design and analysis software youtube. The periodic inspection and monitoring of offshore platforms for certification needs the study of the responses of structures owing to wave and wind. Offshore structural analysis and design lonadek inc. Design, procurement, construction, installation epci and hookup of a wellhead platform and reception module. Offshore oil production is one of the most visible of these applications and represents a significant challenge to. Jacket refers in the oil and gas exploration and production to the steel frame supporting the deck and the topsides in a fixed offshore platform. Offshore jacket design offshore wind turbines must withstand typhoons and earthquakes in taiwan. We work to extend the life of assets and optimize owners opex, via targeted maintenance programs and digitized. For more information on sacs offshore structural analysis software, please visit. The platform consists of 8 slots, gas processing equipment, power generation diesel and gas, helideck, emergency shelter and 2 risers 10 export and 3 deg. Offshore wind turbine foundation sesam for offshore wind.

For fixed offshore wind turbine structures software for ultimate strength and fatigue analysis of offshore wind turbine substructures dnv gls sesam software offers a tailormade solution for structural strength analysis of offshore wind turbine structures addressing the industrys need to account for the combined. The technique improved design quality, reduced errors, decreased manhours, and shortened construction time. Improve design quality and predict offshore structural performance using a unified analysis environment that enables the efficient exploration of alternatives. Achieve offshore structure compliance more quickly with the most. Pdf foundation engineering of offshore jacket structures. Furthermore, we have developed advanced software solutions for offshore structural analyses, which continuously support international standardisation of jacket structures. Design and analysis of jacket substructures for offshore. It began oil exploration and production offshore india in 1976, and today operates 265 fixed platforms in water depths ranging from 2590 m 82295 ft. Optimization results are verified by fe analysis for static and dynamic performance.

Over the years, our expert knowledge within design, analysis and assessment has brought aging platforms to life. Development of a technology type factor for jacket. For instance a steel jacket structure or a steel tower structure might be a more economical support structure for offshore wind turbines in deeper water. Its offshore structural analysis and design software, or sacs, was used in designing the substructures of the wind turbines. Jacket structures, topsides, design, construction, metocean, geotechnical. The minimum thickness of structural plate or section should be 6 mm.

Analysis of offshore jacket platform harish n 1, sukomal mandal 2. Sacs is an integrated suite of software that supports the analysis, design, fabrication, and installation of offshore structures, including oil, gas, and wind farm platforms and topsides. Engineering, procurement and fabrication of jacket and topsides. Integrated design optimization of jackets and foundations. Its ability to dynamically iterate designs allows users to perform advanced analysis, comply with offshore design criteria, and visualize complex results.