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Activity - Stag Field Operations

Activity details
Organisation Jadestone Energy (Australia) Pty Ltd
Project Stag Field Development
Activity types Operation of a facility for the recovery or processing of petroleum
In-force EP 5389
Submission date 11 September, 2020
Outcome Accepted
Acceptance date 29 March, 2021
Locations North West
Start date Pending titleholder notification
Stop date Pending titleholder notification
Lifecycle Classification Operation & Production
Please note: activity start and stop dates are based on notifications provided by the titleholder.

Titleholder contact
Stephen Brown
Phone: 0894866642

Activity Description
The Stag Facility is located in permit area WA-15-L and WA-6-PL approximately 60 kilometres (km) northwest of Dampier. Activities associated with the Facility include:
• A fixed Central Production Facility (CPF), producing and processing oil from a number of wells;
• A single 2 km long carbon steel export oil pipeline on the northeast side of the CPF connecting to a Catenary Anchor Leg Mooring (CALM) buoy via a flexible submarine hose;
• A flexible import hose from the CALM buoy that delivers oil to a third-party tanker. Once loading is complete, the tanker departs the field for delivery of cargo to market. No offtake activity from the third party tanker occurs in field;
• Water injection flowlines and wells to assist reservoir fluid recovery;
• Support/ supply vessels, work vessels and tug boats/ static tow vessels supporting third-party tanker movement, facility logistics, maintenance and provisioning; and
• Helicopter support.

Oil is loaded continuously to the third-party tanker at a production rate of up to 5,000 bbl/d. The CPF has been in production since 1998 with only minor modifications carried out during this time. Historical operations at the Stag Field have seen the inclusion of a floating, storage and offtake (FSO) vessel that has been moored in field and receives produced oil from the central production facility (CPF), and then offtake of the cargo to a third-party tanker. Recent operational and commercial developments have seen a shift to an operating model that requires only a third-party tanker and thereby permanent relinquishment of the FSO from the field, and therefore a revision to the current EP has been submitted.

The scope of this Environment Plan covers the operation of the offshore facilities for a period of up to 5 years from initial acceptance in December 2017.
Location map (click to enlarge)
Location map - Activity: Stag Field Operations (refer to description)

Accepted EP Documents

EP Document A774549 (35.2 MB)
OPEP Document A774546 (1.86 MB)
Appendices A774545 (1.41 MB)