OFFSHORE SPECIALIST ENGINEERING SERVICES - … · mooring systems and risers for the off- ... analysis of deepwater and shallow water ... • Develop route selection criteria

ZEE Engineering Consultants

OFFSHORE SPECIALIST ENGINEERING SERVICES

With experienced engineers, with ad-vanced knowledge in FEA modeling and backed by state of the art software, ZEE Engineering Consultants are capable of undertaking Finite Element Stress analysis of complex structures.

ZEE have performed various projects re-quiring complex FEA modeling to accu-rately verify stresses in structural compo-nents.

Projects undertaken by ZEE are varied in nature, such as Stress checks for Ship Hull and Deck Structure interface, Rig Jack-houses, Rig leg Spudcans, Jacket Skirt Piles, Suction Piles, Offshore Clamping Devises, explosion proof Walls and Pipeline Ploughs.

This has enabled ZEE to provide clients with cost effective solution without sacri-ficing safety.

ZEE has also assisted Installation Contrac-tors to verify installation components’ stresses during the installation process using the FEA modeling techniques.

ZEE provides a broad range of services in support of design and modifications of FPSOs, RIGs, Offshore Platforms, SPMs, Mooring Terminals and offshore floaters.

ZEE uses a wide range of numerical model-ing techniques and computer simulations to assist the offshore oil and gas industries to optimize design, minimize commercial risks and maximize safety.

ZEE Engineering Consultants have per-formed various analysis pertaining to mooring systems and risers for the off-shore oil and gas industry.

Backed by state of the art software tools, ZEE is capable of undertaking fully coupled, multi-body time domain numerical simula-tions of complex mooring systems.

Analysis can be carried out in quasi-static and dynamic modes.

With advanced knowledge of floating bod-ies, fluid mechanics and line dynamics, ZEE is capable of assisting Installation Contrac-tors to perform deployment and recovery analysis of deepwater and shallow water operations.

ZEE uses a wide range of numerical model-ing and computer simulation techniques to assist the offshore oil and gas industry to optimize design, minimize commercial risks and maximize safety.

ZEE also provides a broad range of ser-vices in support of design and installation of mooring terminals, FPSO modifications, process modifications, structural design of hulls and floaters and model testing.

Offshore platforms are typically designed using established design codes. Reliability analysis may be carried out as a second step, to ensure that the platform attains certain target probabilities of failure.

Optimization of these structures is based on experience of the design engineer, and may often only be based on optimizing individual members.

Normally, only the initial design, rather than ultimate strength criteria, is consid-ered in the optimization problem.

To conduct platform ultimate strength analyses to establish failure, the loading must be increased beyond that corre-sponding to the applied load.

Thus, the environmental loading pattern is increased using incremental loads until the ultimate strength is reached.

Beyond the peak load factor point, the strength will soften, either gradually or rapidly depending on the mode of failure and the behavior of the members and foun-dations.

The term “pushover analysis” or some-times “collapse analysis” is widely used within the offshore industry to describe three-dimensional, non-linear, large deflec-tion, static finite element analysis.

The horizontal forces on the platform structure, representing wave forces, are increased until structural collapse is reached.

The failure and post-failure behavior of platform components, such as brace mem-bers and tubular joint connections, are modeled explicitly.

ZEE Engineering Consultants has carried out numerous structural integrity audits on platforms which have exceeded the design life, but need to be operative with struc-tural enhancement, using the pushover techniques.

Engineering design, construction and instal-lation of subsea pipelines have been one of ZEE’s main activities since the company was formed in 1986.

Although many other engineering disci-plines have since been added to ZEE’s range of engineering services, subsea pipe-lines still constitute a major part of ZEE’s activities.

Primary emphasis has always been on pipeline design and installation technologies, needed by most cli-ents for a cost effective completion and operations of pipeline systems in all environments.

ZEE has designed and analyzed pipelines for various cost effective installa-tion methods; surface tow method, control depth tow method, bottom tow method, conventional installation using Lay-barge method, to name a few.

ZEE’s range of services includes:

• Develop route selection criteria

• Supervise the survey field and data processing work

• Design basis definition

• Pipeline hydraulics and sizing

• Initial selection of pipeline route

• Stability analysis and determination of weight coating and/or trenching re-quirements

• Wall thickness and steel grade calcula-tion using traditional or limit-state design criteria

• Pipe spanning analysis and determina-tion of pipe support needs

• Upheaval buckling analysis and assess-ment

• Fatigue and fracture mechanic assess-ment

• Riser Vortex Induced Vibration stud-ies

• Risk analysis studies

• Riser analyses (platform risers, J-tubes, steel catenary risers, top tensioned and hybrid risers)

• Shore crossing studies

• Pipeline installation studies

• Cost analyses

• Preparation of material specifications

• Preparation of construction specifica-tions

• Preparation of route drawings

Apart from engineering designs of subsea pipelines, ZEE has provided a broad range of services for the pipeline installation con-tractors in support of pipelay installation with designs of Pipelay Stingers, Lay-barge modification, designs of Lay-barge for swampy areas, backfill plough designs, dead-weight anchor designs, floatation devices, etc.

Recent years have seen the need to de-velop deepwater reserves. This need has resulted in the use of concepts based on floating structures. In particular the ship-shaped structures such as FPSO’s (Floating Production Storage Offloading) have seen an increased in popularity within the oil and gas industry.

Since 1994, ZEE has established an excel-lent reputation for quality engineering and project management of Floating Production System (FPS) including conversion, modifi-cation or new building of tanker based FPSO / FSO systems.

ZEE has highly skilled Naval Architects, Ship Structural Engineers, Marine Engi-neers, System Designers, Process Engineers and Offshore Installation Engineers, sup-ported by other disciplines such as subsea, structural, piping, instrument, electrical, safety and drafting.

ZEE’s broad skill range combined with wide-ranging experience gained from vari-ous marine projects will ensure realistic and technologically up to date solutions tailored to our client’s particular needs.

ZEE’s main goal has always been to create innovative yet practical and cost effective solutions.

With it’s multi-discipline engineering and design office uses the latest computer aided design and analytical software, with finite element analysis modeling capabilities. ZEE is capable of undertaking the most difficult problems encountered in either a mobile offshore platform (Rig) refurbish-ment and upgrade project, or in the devel-opment of the design of a complex produc-tion module.

From Conceptual or Front End Engineering Design to certified stress calculation of the detailed design, ZEE can respond instantly and efficiently to both client and third party certification requirements.

ZEE’s conceptual engineering group consid-ers ideas and associated risks and then rigorously tests feasibility of implementa-tion within strategic constraints. This is not limited to just technical challenges but combines financial evaluations with socio economic considerations to deliver opti-mized recommendations for maximum value to the client.

ZEE’s broad range of services includes the following.

• Inplace stress verification of Mobile Offshore Platforms.

• Stress Audits for Rig components.

• Living Quarters design and upgrades.

• Helidecks design.

• Cantilever conversion and hull strengthening design.

• Process system design, modification and upgrades.

• BOP handling system design.

• Drill floor and derrick upgrade engi-neering.

• Early production system design.

• Foundation design and verification for Rig movements.

Jl. Pluit Karang Cantik VII, Block R 3 U No. 9, Pluit, Jakarta 14450, Indonesia

Phone: +6221-663 0164

Fax: +6221-660 4521

ZEE ENGINEERING CONSULTANTS (ZEE) was established in 1986 to provide engineering services to the Oil/Gas Industry in South East Asia.

Since its inception ZEE has participated in a number of major projects in this region. Over the years ZEE has demonstrated capabilities in conceptual studies, detail design, and contract supervision of Oil/Gas related projects.

The philosophy at ZEE is to provide quality engineering to its clients within budgets costs, and time schedules. ZEE pride itself in working with clients to achieve the successful conclu-sion of projects.

The staff at ZEE Engineering comprise of design and engineering personnel supported by state-of-the-art computer hardware and software, necessary for handling projects of almost any complexity.

In response to the growing needs of the oil and gas industry in South East Asia, ZEE engineering Consultations has extended its capability by forming joint venture associations with key expertise in the industry.

This has enhanced ZEE’s capabilities to respond quickly and effectively to multi-discipline de-mands of the industry.

882, Block A1, Pusat Dagang Setiajaya (Leisure Commerce Square), No. 9, Jln. PJS 8/9, 46150 Petaling Jaya, Malaysia

Phone: +603 7877 8001 / 9001

Fax: +603 7877 2008

E-mail: [email protected]

Website: http://www.zee-eng.com

ZEE Engineering Consultants

MALAYSIA

1, Goldhill Plaza #02-09, Podium Block, Newton Road, Singapore

Phone: +65-6255 3933

Fax: +65-6255 6625

SINGAPORE

http://www.zee-eng.com

JAKARTA