3D Oil’s plan for seismic survey in Roebuck basin open for comment

The environment plan for 3D Oil Limited’s Sauropod 3D marine seismic survey in Commonwealth waters of the Roebuck Basin, within exploration permit WA-527-P off Australia, is now open for public comment, according to Australia’s offshore regulator, NOPSEMA. 

3D Oil submitted the plan to NOPSEMA on July 16, 2019. The purpose of the Sauropod 3D marine seismic survey is to collect high quality geophysical data about rock formations and structures beneath the seabed and assess potential for new oil and gas discoveries.

The acquisition area comprises the area within which 3D seismic acquisition will be undertaken and covers approximately 3,500 km2. The acquisition area is surrounded by a larger operational area (approximately 6,000 km2), for the purpose of line turns, run-ins, run-outs, seismic testing and support activities.

The operational area at its closest is approximately 120 km north of Eighty Mile Beach and 230 km west of Broome. The seismic survey will be undertaken in water depths between approximately 95 m to 172 m.

The survey will involve a single seismic survey vessel towing a seismic source array with a total volume of 3,090 cubic inches (in3), at a water depth of approximately 5 – 10 m. The seismic source will use compressed air to emit regular pulses of sound that reflect off the seabed and underlying rock formations. The reflected sound wave will be received by up to 12 hydrophone streamers.

Each streamer will be up to 7,000 m in length, spaced 75 m apart and towed at a depth of approximately 15 m. During the survey, the seismic survey vessel will travel at a speed of approximately 4.5 knots, discharging the seismic source approximately every 5 seconds.

The survey vessel will typically acquire seismic data along a series of adjacent and parallel lines in a “racetrack” pattern. When the vessel completes the line, it will turn again to follow another line offset approximately 450 m from the first. This pattern is repeated until the required coverage is completed.

The Sauropod 3D MSS will take a maximum of 60 days to acquire, and will be undertaken within the acquisition window of January to April 2020, or January to April 2021. The precise timing of the survey is subject to vessel availability, weather conditions and other operational considerations, and will take into account the seasonality of environmental sensitivities, where practicable.


Spotted a typo? Have something more to add to the story? Maybe a nice photo? Contact our editorial team via email.

Also, if you’re interested in showcasing your company, product or technology on Offshore Energy Today, please contact us via our advertising form where you can also see our media kit.

Share this article

Follow Offshore Energy Today

Events>

<< Dec 2019 >>
MTWTFSS
25 26 27 28 29 30 1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31 1 2 3 4 5

Africa Oil Week 2020

For over 25 years Africa Oil Week has been the meeting place for Africa’s most senior E&P stakeholders.

read more >

CERAWeek 2020

 Each year, CERA clients gathered for a few days in Houston…

read more >

Offshore Technology Conference (OTC) 2020

The Offshore Technology Conference (OTC) showcases leading-edge technology for offshore drilling, exploration…

read more >

2020 EXPLORATION AND PRODUCTION STANDARDS CONFERENCE ON OILFIELD EQUIPMENT AND MATERIALS

The development of consensus standards is one of API’s oldest and most successful programs.

read more >

Jobs>

Looking to fill a job opening?

By advertising your job here, on the homepage of OffshoreEnergyToday.com, you'll reach countless professionals in the sector. For more information, click below...

apply

Looking to fill a job opening?

By advertising your job here, on the homepage of OffshoreEnergyToday.com, you'll reach countless professionals in the sector. For more information, click below...

apply