Long Subsea Tiebacks

Genesis understands the limits of conventional subsea design and has the experience and tools to design unique solutions to address the challenges of long subsea tiebacks.

subsea tieback

Our flow assurance teams specialise in steady state and transient flow analysis to address start up, normal flow and cool down. We have extensive experience with detailed hydraulic analysis for liquids management and thermal management to address hydrates and/or wax deposition.

Our pipeline engineers work closely with flow assurance to ensure the mechanical designs address the flow assurance challenges. Our geotechnical team optimises routing and addresses pipe-soil interactions. We also have extensive experience with all the major installation options and contractors, and will ensure the pipelines are installable.

Long distance tiebacks create difficulties in control system power distribution (voltage drop and power factor) and communication (bandwidth and signal loss). We solve such problems using our experience and tools, particularly with respect to subsea controls, umbilicals, subsea a/c transformers and subsea power distribution.

We also ensure that complete life cycle planning is included in the overall design with future expansion capability (subsea fibre optic multi-drop ring network).

Cost reduction and risk mitigation are more critical with long stepouts and we provide optimised field proven designs to address these issues (hydraulic intensifier eliminates umbilical HP tubes).

We provide solutions for long stepouts for major international oil companies, independents and NOCs on prominent projects in the US and Gulf of Mexico, the North Sea, Australia, SE Asia, East and West Africa, and Brazil.