The Company - SACSKO to enable others to undertake dynamic analysis through software ... key mooring lines and turret is shown a few seconds after ... offloading CALM system.

Professional software for engineering professionals

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The industry leading tool for the dynamic analysis of offshore marine systems, includingall types of marine risers, mooring systems, installation procedures and towed systems.OrcaFlex is the only tool with fully integrated access to Shear7, VIVA, time domainwake oscillator models and time domain vortex tracking.

Efficient pipelay optimisation tool.Allows efficient planning andoptimisation of pipeline & umbilical layprocedures.

Software for fast,efficient design ofelastomeric bendstiffeners.

Our Software.... (all Windows compatible with fully interactive GUI)

Orcina was established in 1986 offering structural and

hydrodynamic consultancy services to the offshore oil and gas sector.

OrcaFlex was produced in the same year and has been continually

developed ever since. OrcaBend and OrcaLay were initiated in 1989

and 1998 respectively. Our work on OrcaFlex vortex induced

vibration analysis tools started in 2002.

Since then the company has grown to become the world leader in

delivering user-friendly software solutions for the dynamic analysis

of offshore systems. Consequently, we have for many years regarded

ourselves essentially as a software house - our primary business aim

is to enable others to undertake dynamic analysis through software

supply and associated support.

The key to our success is our approach to software development - one which relies on close teamwork

between a variety of disciplines: engineers to define the requirements, mathematicians to apply rigour

and generality, and software engineers to implement robust and reliable code. Above all we recognise

that productivity is essential for our clients - consequently we devote considerable effort to make our

software robust, intuitive and user-friendly. All our products are fully Windows compatible and come

with context-sensitive help files. This combined approach results in highly productive software which

allows engineers to focus on developing solutions rather than running software.

However, delivery of best-in-class software is only one part of what we do. A very important feature of

our business is our ability to work with clients to enhance their productivity. Our team of analysts does

this through a mix of technical support, delivery of courses, User Group Meetings and project support.

This aspect of our work is highly regarded by our clients and is something that we consider an essential

part of our business.

We hope that you will take the time to look through this brochure. If something catches your attention,

then please do not hesitate to contact us.

The Company

Full technical specification, applications and other info can be found atwww.orcina.com/SoftwareProducts

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Delivering 1st class software solutions relies not only on producing the best software in the industry, it

also involves developing long term post-sale relationships with clients. Much of our technical support,

which our clients regard as the best in the industry, is provided by our highly experienced team of

analysts. Their job is to keep clients productive through fast turn-around of technical questions, delivery

of open, bespoke and advanced courses, running our very successful User Group Meetings and by

working alongside clients on their projects.

The robust and hugely versatile nature of our software means our analysis team sees an enormous range

of modelling challenges. In solving these, we develop detailed modelling insights for complex and novel

systems. This experience is hugely beneficial when brought to bear on new and unusual problems, and

is a key reason why our support is held in such high regard.

Our analysis team also undertakes consultancy studies on a wide range of marine dynamic systems and our

innovative and flexible approach to these studies is highly valued by our clients. A key feature of our

approach is to recognise that analysis requirements often evolve during the course of a project. Taking a

realistic and flexible view in these circumstances ensures that the ultimate aims of the project are best served.

• OrcaFlex is available in two versions (statics-only or full dynamics).

• OrcaFlex is not modular, representing a very cost-effective software solution.

• OrcaFlex includes clearance and contact analysis, modal, fatigue and VIV analyses at no extra cost.

• OrcaLay and OrcaBend are stand-alone programs.

• Purchasers benefit from a tiered discount schedule for multiple copies of the same program.

• Initial purchases include 12 months maintenance, upgrade and support (MUS).

• MUS contract available for continuing software upgrade and engineering support from our consultants.

• Highly flexible leasing (1 month min.), with credit accrual for optional conversion of lease to purchase.

A full user manual is supplied in printed form, with updates supplied electronically. The full manual is

also provided in the form of context sensitive help. This includes parameter definitions, model

description and formulation, technical assistance and application notes.

Our software is written in a highly structured modular language, and is developed under a professional

revision control system which controls and records all software advances. Each new software release is

put through a comprehensive formal test suite which checks the new program results against a wide

range of theoretical test cases and with results from previous versions.

We publish validation against analytical and other numerical solutions where these exist. These clearly

demonstrate that the underlying physics is being accurately captured by OrcaFlex - with many other

analytical tests being very straightforward for the user to set up and independently verify.

Consultancy

Software Licensing

Documentation, QA and Validation

Dynamic analysis of risers, moorings, installation proceduresand towed systems, with multiple facilities for VIV analysis.

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Here OrcaFlex is used to model a disconnectable turret system. The configuration of thepliant wave flexible risers, key mooring lines and turret is shown a few seconds afterdisconnection. The disconnection process is fully modelled in OrcaFlex, includinghydrodynamic loads on all lines and the turret. Of interest here is riser curvature, particularlyin the sagbend, contact between the lines and seabed, and clearance / contact between therisers and moorings – all of which can be checked during the simulation and / or replay.

Here a 3-stage articulated stinger is modelled in OrcaFlex - a rigid hinged stinger is asimpler variant of this example. The relative movement between the pipe and stinger isfully accounted for, with intermittent roller lift-off and contact handled as a matter ofcourse. Roller boxes can be set up with arbitrary geometry and full information onclearance, contact load and contact energy, is provided as standard output.

In this example, OrcaFlex is being used to model the lowering of marine equipment to theseabed, guided by a system of tensioned wires. The guide system is fully modelledallowing the interactions between the guides and guide wires to be realistically accountedfor. All the results of interest, line tension, lateral loads on the guide wires, loads on theobject, etc are then readily obtained.

Risers • Tensioned marine risers • Steel catenary risers • Flexible risers and umbilicals • Hybrid Riser systems

Installation Analysis All forms of analysis for installation, operational intervention and decommissioning

The above screenshot shows 3 SCRs hanging from a SPAR host. The critical issue here isfatigue damage in the hang-off and touch-down areas. OrcaFlex is used to find thenecessary dynamic stresses in these locations and then to post-process these using built-in fatigue analysis facilities. Cumulative fatigue damage in any region is thereby easilydetermined.

OrcaFlex is used to model a workover riser deployed from semi-submersible drilling vessel.The lubricator assembly is suspended in the drilling derrick and the riser hangs below it,with much of its weight supported by a pair of tensioners hung off the drill floor.Clearances are tight where the riser passes through the drill floor. Riser-Drill floor contactis a possibility, and OrcaFlex is perfectly capable of modelling intermittent contact andpost-contact behaviour.

The above example shows a series of jumper lines between a riser tower and the risergantry on a FPSO. The coupled dynamics of the system are fully modelled as is theinteraction with the bellmouths. The clearances between the lines are critical, especiallywith current normal to the lines, and lines with different specific weights - clearances area standard results variable in OrcaFlex.

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Defence• Minesweeping studies • Ship-to-ship replenishment • Dunking sonar modelling • Helicopter landing systems • Floating protection booms and nets

Hose Systems• Under-buoy hoses • Offloading hoses • Floating hoses

Buoy Systems• CALM buoys • SPAR buoys • Mid-water arches • Metocean buoys

Renewable Energy• Wave power systems • Offshore wind farm installation • Wind turbine modelling • Power cable take-off

Miscellaneous• Seabed stability analysis • ROV footprint analysis • Sea fastening design • Aquaculture nets • Carousel and reel loading

Full technical specification and other info can be found atwww.orcina.com/SoftwareProducts/OrcaFlex

The above screenshot shows the port side of a 12 streamer array. As well as the streamersand guns, all the connection rigging and the 'diverter' are fully modelled. Key issues arethe maintenance of diverter lift to keep the array spread, especially whilst turning. Loadswithin the rigging are also important – failure here can lead to a collapse of the array andsignificant levels of downtime.

In towed fish problems, a very useful feature is the ability to control the wing orientationwith time in order to achieve some desired objective. In this example a PID controller,shipped with OrcaFlex, is being used to alter wing angle to achieve a user-specified targetdepth. The graph shows the time history of depth for the fish, with the target achievedafter some period of active wing control.

Global Analysis & Moorings • Mooring systems (spread, turret, SPM, etc) • Other (Ocean, Aquaculture & Jetty, etc)

Other Systems

The above screenshot shows a fully coupled model of a TLP, spread moored FPSO and anoffloading CALM system. Modelling this level of detail allows accurate assessment of therelative clearance of these structures as well as the loads throughout the system.

Here the OrcaFlex model shows a shallow water CALM buoy with an offloading tankerconnected. The dynamics of this fully coupled system are completely accounted for, allowingready determination of the loads and clearances for each mooring line, as well as the hose andconnection hawser. Shown above is the curvature envelop for the hose.

Towed Systems • Bundle dynamics • Siesmic arrays • Towed Bodies

Efficient pipelay optimisation software

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The above screenshot shows a view of the line, vessel and the constraints imposed. Alsoshown is the data form for the line, where the user sets, amongst other data, the relevantcode to check against, and the properties of the line.

For post-processing, any available variable can be plotted against any other -as shown above. As with all our software, the graphs can be copy/pasted intoother applications. Spreadsheet compatible results as shown inset areobtained at the click of a button.

The performance chartshown here representsOrcaBend’s design solution(tension-angle combinations)for two different materialstates. The chart presents thecapability of the bendstiffener, where the solidlines show the limits ofacceptable performance atdifferent temperatures.Superimposed are the pointsrepresenting each of theuser-defined load cases,allowing a visual check thatthe design satisfies thosecases.

OrcaBend designs the bendstiffener to meet a range ofuser defined loadcases –these are tension-anglecombinations obtained froma global analysis programsuch as OrcaFlex. For eachloadcase it is then possible tosee the deflected shape (asshown). The two shapesrepresent the response of thestiffener at differenttemperatures.

This screenshot shows the basic GA of the resulting bend stiffener design. It also shows theprotrusion of the flexible beyond the end of the bend stiffener. OrcaBend checks for bendradius infringement not only at every point along the bend stiffener, but also in the flexiblejust beyond the bend stiffener tip.

These screenshots show the data required for running multiple cases ininitiation, lay and laydown stages. For initiation, multiple pipe payout casesare specified. During lay, multiple water depths and seabed slopes can bedefined, and for laydown, multiple cases of wire payout may be defined.

Optimised Bend Stiffener design

Full technical specification and other info can be found atwww.orcina.com/SoftwareProducts/OrcaBend

Full technical specification and other info can be found atwww.orcina.com/SoftwareProducts/OrcaLay

For further information, please contact either:

ORCINA:

Dave Thomas Colin Blundell(Business Development Manager) (Consultancy Manager)

Tel: +44 (0)1229 584 742 Email: [email protected]: www.orcina.com

LOCAL SUPPORT:www.Orcina.com/ContactOrcina

for local technical and sales support agents inN. America, S. America, Scandinavia, S.E. Asia, Korea and India

At Orcina we have a policy of continual product development inorder to give the best service to our clients. Consequentlyproducts may differ factually from the descriptions herein.

Latest information is maintained on our website.

Orcina LimitedDaltongate Ulverston

Cumbria LA12 7AJ UK

Tel: +44 (0)1229 584 742 Fax: +44 (0)1229 587 191Email: [email protected] Web: www.orcina.com