Keraudren Seismic Survey

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Activity name
Keraudren Seismic Survey
Activity types
Seismic survey
Submitted by
Quadrant Northwest Pty Ltd
Submission date
07/12/2018
Submission type
New
Status
Accepted
Decision date
25/03/2019
Related documents
EP Summary (pdf 6.4 MB)

Location map (click to enlarge)
A652188
Progress bar
Submission
Assessment
Final decision
EP summary published
Activity started
Activity stopped
End of operation of EP
Activity events
Event Event date Next event* Next event due* Related documents
Submission of new EP 07/12/2018 NOPSEMA decision 07/01/2019 Not applicable
Not reasonably satisfied – opportunity to modify EP 20/12/2018 Titleholder action 10/01/2019 Decision notification (pdf 179 KB)
Extension of timeframe 10/01/2019 Titleholder action 16/01/2019 Not applicable
Resubmission of EP 16/01/2019 NOPSEMA decision 15/02/2019 Not applicable
Request for further information 06/02/2019 Titleholder action 08/03/2019 Not applicable
Submission of further information 08/03/2019 NOPSEMA decision 22/03/2019 Not applicable
Acceptance of EP 25/03/2019 Titleholder action 04/04/2019 Decision notification (pdf 9.5 MB)
Submission of EP summary 03/04/2019 NOPSEMA decision 17/04/2019 Not applicable
Publication of EP summary 11/04/2019 Not applicable Not applicable
Activity started 02/05/2019 Not applicable Not applicable
Activity started 08/05/2019 Not applicable Not applicable

* The next event is based on NOPSEMA’s understanding and expectation of what may occur next in the assessment process. There are a number of other events that may occur, and events may happen sooner or later than expected. All events will be published in this table as and when they take place.

Activity description

Recent exploration undertaken by Quadrant in the Bedout Sub-basin has identified hydrocarbons within several reservoirs. To further appraise the hydrocarbon resources, Santos is seeking to acquire additional subsurface data via a seismic survey in Commonwealth waters approximately 118 km north of Port Hedland. The proposed Keraudren Seismic Survey is within petroleum permits WA-435-P, WA-436-P, WA-437-P and WA-438-P. The seismic survey covers a total area of 5,539 km2, including vessel ‘ramp up zones’. An additional operational area has been allowed for vessel manoeuvring, providing for a total operational and seismic survey area of 10,690 km2.

 Water depths in the operational area range from 50 m to 150 m.

 This activity is expected to take between 80 and 110 days, subject to weather conditions and vessel availability, in a window between February to July 2019.

 Operational Details

The seismic survey will acquire data in two directions, defined as the Exploration Seismic Survey Area which runs north-west to south-east, and the Development Seismic Survey Area which runs north north-east to south south-west.

 Seismic acquisition in the Exploration Seismic Survey Area will be via methods and procedures similar to other 3D marine seismic surveys conducted in Australian waters. One seismic survey vessel will tow a seismic source array and streamers to survey the area.

 Seismic acquisition for the Development Seismic Survey Area will be via a modified version of a typical 3D marine seismic survey and involve the use of a second survey vessel.  The primary survey vessel will tow a seismic source array and streamers, over which the secondary survey vessel towing only a seismic source array (i.e. no streamers) will follow. The primary and secondary survey vessels will sail in the same direction and be separated by a distance of approximately 3 kilometres.

Regions
North West
Commonwealth waters adjacent to
Western Australia
Titles (or other instruments)
WA-435-P Opens in new window , WA-436-P Opens in new window , WA-437-P Opens in new window , WA-438-P Opens in new window
Contact

Mr Michael Giles

Geophysical Manager

Level 7

100 St Georges Terrace

PERTH WA 6000

Tel: +61 8 6218 7100

Email: HSE.regulatory@quadrantenergy.com.au

Reference
4697

*Where an environment plan was submitted or accepted prior to 28 February 2014 certain information is not published, in accordance with the Environment Regulations in place at that time. For accepted EPs, refer to the attached EP Summary for additional information.