The Shell-operated Crux development is located in Commonwealth waters in the northern Browse Basin, 190 kilometres (km) offshore north-west Australia and 620 km north-east of Broome, in approximately 165 metres (m) water depth.
The Crux gas field has been identified as a source of backfill gas to the existing Prelude Floating Liquefied Natural Gas (FLNG) facility.
The project is being progressed by the Crux Joint Venture with Shell Australia as majority operator and encompasses the Production Licence AC/L10.
The first environmental approval for Crux was the Crux Offshore Project Proposal (OPP), which was accepted in August 2020 by the National Offshore Petroleum Safety and Environmental Management Authority (NOPSEMA).
The Crux development drilling program (inclusive of drilling template and docking pile installation) is the first significant infield activity planned to occur to support the execution of the Crux development.
This EP covers the following activities within the Operational Area located within the petroleum title AC/L10:
Drilling Template and Docking Pile Installation;
Drilling using a semi-submersible MODU;
The operation of in-field support vessels and helicopters required to support drilling activities;
The operation of Remote Operated Vehicles (ROVs); and
Well suspension and contingent sidetrack and/or plugging and abandonment activities.
The drilling template installation is the first activity that will be undertaken in relation to this EP. This activity is currently proposed to occur in the second quarter of 2023, approximately three months ahead of the MODU arrival. The drilling template installation campaign is nominally schedule to occur over a one month period. Following the MODU arrival, drilling activities will commence for a planned duration of approximately 10 months, with an additional 10-month contingency drilling period. At the completion of the drilling campaign the wells will be temporarily suspended, and subsequent well completion activities will be undertaken following the topside installation (well completion activities will be covered by a separate EP).
The docking pile guides and docking piles will be installed following the suspension of the wells and sail away of the MODU. This installation is planned to be completed during a one week campaign however, weather constraints and subsurface conditions may see this extending over a one month period.
This EP will remain active following the drilling campaign for the duration that the wells are temporarily suspended, which is planned to be approximately 21 months.