In the oil and gas industry the term subsea relates to the underwater exploration, development and drilling of oil and gas fields.

Subsea installations are used to develop reservoirs outside effective reach of existing platforms, they can be installed, designed and constructed in faster time than traditional platforms making them an attractive substitute. And if surface facilities are available subsea is a much less expensive alternative, and can reduce the size of expensive platforms by moving some of the functionalities to the sea bed. Subsea systems can range in complexity from a single satellite well connected to a fixed or floating facility to several wells connected to a central manifold tied to platforms or directly to an onshore installation.

This paper offers an introduction to subsea and showcases how Sesam offers the most complete and efficient tool to perform the design analysis of subsea structures.

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