Cooper/Eromanga Basins, onshore central Australia, approximately 770 kilometres north of Adelaide.



Santos – 66.6% (operator)
Delhi – 20.2%
Origin – 13.2%


The first commercial gas discovery was made at the Gidgealpa field in 1963.
The first Permian oil discovery was made at the Tirrawarra field in 1970.
The first Jurassic oil discovery was made at the Strzelecki field in 1978.

First Production

Gas sales to Adelaide commenced in 1969.
Gas sales to Sydney commenced in 1976.
Ethane sales to Sydney commenced in 1996.

About the Development

The Moomba facility accepts production from surrounding oil and gas fields through approximately 5,600 kilometres of pipelines and flowlines via 24 oil and gas satellite facilities, many of which incorporate field boost compression.

The Moomba facility also incorporates substantial underground storage for processed sales gas and ethane.

Natural gas liquids are recovered via a refrigeration process in the Moomba plant and sent together with stabilised crude oil and condensate through a 659-kilometre pipeline to Port Bonython near Whyalla, South Australia.

Sales gas is sent from Moomba to Adelaide via a 790-kilometre pipeline and to Sydney via a 1160-kilometre pipeline. Ethane is sent to Qenos in Sydney via a dedicated pipeline.

The central processing plant in Moomba comprises:

  • Oil processing: crude stabilisation and crude/condensate storage.
  • Gas processing: inlet slugcatchers, seven Benfield CO2 removal trains, gas dehydration via molecular sieves, a natural gas liquids recovery plant, an ethane treatment plant including amine absorption, and pipeline compression.

Water is provided by bores and a reverse osmosis treatment plant and electricity is supplied via 20 MW of on-site power generation capacity. The plant is serviced by a jet-capable sealed airstrip.