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Perth Basin


The Perth Basin is a large basin of approximately 174,000 square kilometers 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



On Wednesday 23 December 2020, Beach Energy and its joint venture partner Mitsui E&P Australia announced that it had reached Final Investment Decision on the Waitsia Gas Project Stage Two.

The development involves the drilling of up to six wells, construction of a new 250TJ per day gas processing facility, planned with preferred contractor Clough, and associated gas gathering infrastructure.

Read the ASX Release


Beach Energy is planning to undertake seismic surveys in the north Perth Basin, around 40 kilometres south east of Dongara, over the next few years.

The aim of these surveys is to identify natural gas reserves within our existing exploration permits and production licenses. The data collected will be used to inform future exploration activities in the area which may lead to natural gas production activities over the next 20 years.

Download the information sheet by clicking the button below to learn more.


Trieste Survey resources (click to download)

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.

Beach holds a 50% operated interest in the Beharra Springs project, which 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.


Beharra Springs, Perth Basin


  • 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


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).

Perth Basin

Contact us

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

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

Department of mines, industry regulation and safety