What we do

Mitsui E&P Australia’s operations in the northern Perth Basin are located near the town of Dongara approximately 360km north of Perth and 65km south of Geraldton in Western Australia.

We are actively exploring, appraising, developing and producing oil and gas in a number of locations in the Mid West of Western Australia. Our projects cover the full life-cycle range from exploration to production and decommissioning.  Health, safety and environment protection are our highest priorities wherever we operate.

The locations of our current projects are highlighted in the following map. More details on projects are provided in the Schedule of Activities.

Perth Basin Fields May 2021

Mitsui E&P Australia operations in the Mid West of Western Australia

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Different types of gas

Conventional gas, unconventional gas, shale gas, tight gas, coal seam gas. What does it all mean?

The Process of Making Gas

There’s a lot that goes into getting gas from the ground to your kitchen. Find out more about the process of making gas.

Schedule of Activities

See what we’re currently working on by consulting our Schedule of Activities.


Before anything can happen we need to plan carefully. Read more about the planning process.


We look for gas, and when we find it we figure out if it’s worth pursuing further. Find out more about our exploration and appraisal process.


Once we’ve confirmed a well is commercially viable we get ready to put it into production. Read more about the development process.


During the production phase we produce gas from the well and sell it. Find out more about the production process.

Decommissioning and Rehabilitation

When the exploration or production activity has finished it’s time to clean up. Read more about how we decommission and rehabilitate a well and its surrounding area.

Sustainable energy

Sustainable Energy

MEPAU is actively transitioning to a low-carbon energy future.

The Northern Perth Basin

The northern Perth Basin is a prolific oil and gas producing area covering a large portion of the Mid West region of Western Australia. The town of Dongara, located approximately 360km north of Perth, is the regional economic hub for a number of energy industries.