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Perth Basin

PERTH BASIN OPERATIONS

The Perth Basin is a large basin of approximately 174,000 km2 that encompasses both onshore and offshore parts of south-western Western Australia. The basin extends about 1300 km from south of Perth to its northern tip offshore from Carnarvon.

Beach’s Perth Basin operations consist of the Waitsia project (non-operated) and Beharra Springs (operated) projects.

Beach is currently working with its joint venture partner to evaluate gas commercialisation opportunities and optimise development plans for the Perth Basin.

An orange glow on the horizon fills the morning sky behind Beharra Springs Gas Plant

Beharra Springs, Western Australia

Beharra Springs, Perth Basin

Beach acquired a 50% non-operated interest in Waitsia via the Lattice acquisition.

The project consists of the Waitsia Gas Project, an interest in the Xyris production facility and other in-field pipelines. Gas from two production wells is
processed at the Xyris gas processing facility at a rate of ~10 TJ/d (gross) and is sold to Alinta Energy under a gas sales agreement.

Beach acquired a 67% operated interest in the Beharra Springs project via the Lattice acquisition.

The project consists of the Beharra Springs, Redback Terrace and Tarantula gas fields, and the Beharra Springs gas processing facilities.

Gas from nearby wells is processed at the Beharra Springs gas processing facility and is sold to Western Australia gas customers.

KEY FACTS

  • Safety and environmental sustainability are priorities for Beach, and only proven technologies are used in our operations
  • Beach does not undertake any fracture stimulation (fracking) activities in the Perth Basin
  • Exploration in the Perth Basin commenced in the late 1940s
  • More than 200 wells have been drilled onshore in the Perth Basin since that time – Beach has not drilled any wells to date

Beharra Springs


Perth Basin

Geology OF THE PERTH BASIN

The Perth basin is a Silurian to Recent basin with a complex structural history and at least seven major basin phases. The basin features several deep depocentres with a maximum sediment thickness of 15000m.

Perth Basin strata feature a wide range of depositional environments including alluvial, fluvial, glacially-influenced, lacustrine, deltaic and marine.

To the east the basin is bounded by the Darling Fault which is a major crustal-scale feature separating Archean-Proterozoic basement of the Yilgarn Craton from the Perth Basin sedimentary sequences.

In the onshore regions most commercial fields produce from Permian-aged sandstone reservoirs although time-equivalent carbonate facies also form reservoirs in places.

Oil is generally thought to be sourced by marine shales of the Early Triassic Kockatea Formation whilst gas is sourced from multiple carbonaceous shales and coaly sequences of Permian, Triassic and Jurassic age. Two of the major reservoir units are the Dongara Sandstone (oil and gas) and the Kingia Sandstone (gas).

Contact us

If you have any questions regarding our program in the Perth Basin, please contact:

Nick Dunstan
Community Relations Manager (SA/WA)
community@beachenergy.com.au

For more information on the petroleum industry regulatory processes in Western Australia please visit:

Department of mines, industry regulation and safety