Due the high cost of deepwater subsea wells, large bore subsea production systems with high flowrate potential are desirable to lower the development cost of Woodside's gas reserves. With an ever increasing demand for reliable gas supply to LNG facilities, subsea system reliability in Woodside's exsiting and future gas development is of equal importance. With the number of large gas reserves in its portfolio, Woodside has developed an evolving strategy to deliver a suite of standard large bore reliable subsea production components to enable reliable development of gas fields for lower unit cost.

This paper will describe how Woodside has worked together with its subsea system partner, FMC Technologies, to develop the equipment and systems required to facilitate reliable production of deep water high rate gas wells, including

  • Standard 7" gas tree;

  • Manifolds and Pipeline termination assemblies;

  • Large bore diver-less connection systems;

  • Umbilicals and control systems;

  • Managing flow assurance issues (Incl. hydrate prevention, sand and flow management);

Additionally, the paper will discuss the "stepping stone" approach to developing and proving the large bore system components through initial application on the NWS to the deepwater application of Pluto and will highlight the installation drivers associated with this development approach.

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