Woodside is preparing an Environment Plan (EP) for the Greater Enfield Tieback which is located within petroleum permits titles WA-28-L and WA 59 L in Commonwealth waters, approximately 40 km north-west of the North West Cape near Exmouth in Western Australia.
The Greater Enfield Tieback is a joint venture between Woodside Energy Ltd (Operator, 60%) and Mitsui E&P Australia Pty Ltd (40%).
Drilling components of this scope are scheduled to start between Q4 2017 and end Q1 2018 and is expected to take up to two and a half years in total (including mobilisation, demobilisation and contingency).
Activities to be undertaken as part of the EP include drilling and completions and installation and pre-commissioning of associated subsea infrastructure.
The drilling campaign proposes to drill 12 wells in total within the Norton over Laverda,  Laverda and Cimatti oil accumulations. Six wells will be production wells and six will be water injection wells.
The subsea activities will involve installation of:• ~31 km rigid flowline and associated flexible riser connecting the wells via a multiphase pump (MPP) station to the existing Ngujima-Yin floating production storage and offloading (FPSO) facility;• A rigid flowline and flexible riser providing water injection for pressure support• A flexible gas lift flowline for artificial llift of Cimatti• Flexible production flowlines connecting the production wells to the pipeline; and• Umbilicals for power and control of the subsea infrastructure.