Subsea Systems - Fenchurch Michelson

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GROUP HOME

Capabilities

Subsea Systems

We have significant Feasibility, FEED and EPC(m) experience in the design, analysis, procurement and delivery of subsea flowlines, gathering pipelines, manifold, riser, umbilical and subsea systems for offshore field developments. Furthermore, we have been involved with many of the innovations in materials, installation techniques, and design methods that have taken place throughout the industry.

We are known to be involved in fast track developments often times regarding complex under water systems, installation analysis and campaigns in varying water depths. Our understanding of subsea systems can be broken down into the following:

Subsea Field Architecture Fenchurch Michelson has in-depth knowledge and experience in subsea systems architecture and undertakes subsea system projects starting from concept selection and field development where we help operators to go through the different stage gates. If the project goes into execution, we do detailed design and analysis, equipment delivery and offer offshore installation support. During definition of the subsea field architecture, we place great emphasis on the following constraints:

Client preferred development plan and strategy
Fluids to be produced, injected and exported,
Flow assurance and operability requirements,
Design life, water depth and project geographical locations,
Economic, risk, planning and installability.

Flowline Our experience covers all type of flowline design from basic loop analysis, i.e. wall thickness calculation, mechanical design or expansion analysis up to advanced current analysis, i.e. lateral buckling or pipe walking analysis. Fenchurch Michelson is also very skilled in carrying out installation analysis and design for the following installation methods: Reel-lay, S-lay and J-lay in single pipe or pipe-in-pipes (PIP) systems, from shallow to deep waters.

PLET Our expertise covers the whole scope of work concerning the design of PLET (Pipeline end termination) and ILT (in-line tee) to ensure suitability in tie-in of flowlines, spools, manifolds and well jumpers. Our experience extends to:

Installation method and vessel selection
PLET, Mud mat interaction with seabed
Soil conditions
Flowline expansion
Lateral buckling, etc.

SPOOL Fenchurch Michelson has a strong experience in rigid spools and jumpers analysis:

Wall thickness design of Mother pipe and bends
VIV assessment and Mechanical design
Slugging analysis
Seabed analysis, including rigging definition
Equipment specification and vendors follow-up
Engineering drawings, from pre-fabrication up to assembly drawings.

Structures Fenchurch Michelson undertakes designs on a variety of foundations, with great emphasis on structural integrity and soil structure interaction:

Shallow foundations such as mudmats
Suction piles
Gravity based foundations

With our experience, subsea structures, including Manifolds, PLET/ILT, Riser assembly, Forged pieces, etc can be checked and designed using relevant industry codes and software/ tools, including using these tools to perform finite element analysis (FEA). Our experience and design of foundations is not limited to the oil and gas industry as Fenchurch Michelson has experience in designing foundations for the Upstream, Midstream and Downstream Energy Industries.

Riser Design The design of all types of riser systems is part of our core business. We analyse and size the full range of risers as well as conceive innovative solutions in order to provide cost effective and modern technology solutions to our clients. Bearing in mind that different types of risers are suitable for different field developments needs, we have experience with the following types of risers:

Steel Catenary Risers
Flexible Catenary Risers
Free-standing Hybrid Risers
Umbilicals
Top Tensioned Risers and Subsea Well Systems
Fixed Platform Conductors and Risers.

Subsea Tiebacks With the experience and appropriate software suite, Fenchurch Michelson is well positioned and understands the complexities involved in the design of long conventional subsea step-outs or tie-backs. We provide optimised field proven designs to address cost reduction and mitigate risk, and to address issues bedevilling long subsea tie-backs, including control system power distribution (voltage drop), communications (signal loss) and elimination of umbilical HP tubes. We also ensure integration of complete life cycle planning in the overall design with slots for future expansion included in design and field architecture. Our very experienced pipeline engineers, alongside our flow assurance engineers, routing specialists and geotechnical engineers work as an integrated team to carry out routing and optimised infrastructure lay out; steady state and transient flow analysis to address cool down and start-up conditions. This ultimately ensures the development of suitable mechanical design packages, that will ensure that pipelines and associated systems are installed successfully.