Exploration and Appraisal

The first step in producing gas is actually finding gas in the earth. Then, a decision needs to be made about whether it makes economic sense to pursue it.

Geologists examine the local area and make an initial assessment about the likelihood of gas being underground.

They follow up with more in depth examinations, for example with a seismic survey that looks at the rocks underground. They figure out if the rocks are likely to contain gas and if so, how much.

If the signs all look good, the gas company will drill an exploration well. This well is used to find out if gas really is present, and if so, how far down.

If the exploration well results are promising, the gas company will drill an appraisal well. If not, the company will proceed immediately to decommissioning and rehabilitation.

An appraisal well is used to test the flow rate. It’s one thing to find gas underground, it’s another to extract it. If the gas flows too slowly the well would not be economically viable, because the cost of machinery, equipment and staff is high.

If the appraisal well results are promising, the gas company proceeds to developing the gas field.

If not, the gas company proceeds immediately to decommissioning and rehabilitation.

Recent exploration well examples include Irwin-01 and Drover-01.


RECENT Exploration and Appraisal

Waitsia-02, Waitsia-03 and Waitsia-04 are appraisal wells

Waitsia-02, Waitsia-03 and Waitsia-04

Waitsia-02, Waitsia-03 and Waitsia-04 are appraisal wells. Find out more about  Waitsia-02, Waitsia-03 and Waitsia-04.


PREVIOUS Exploration and Appraisal

Drover well head

Drover-01

The Drover-01 exploration well was drilled in mid-2014. Find out more about the current status of Drover-01.

 

Irwin well, Dongara

Irwin-01

The Irwin-01 exploration well was completed in May 2015. Find out more about the current status of Irwin-01.

Woodada gate

Woodada Gas Field

Woodada Deep-01 was drilled in April 2012. It was a deepening of the Woodada-04 well. Find out more about the current status of Woodada Deep-01.

 

 


What we do at Mitsui E&P Australia

What we do

We are actively exploring, appraising, developing and producing oil and gas in a number of locations in the north Perth Basin. Read more about what we do

Planning projects at Mitsui E&P Australia

Planning

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

Development at Mitsui

Development

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

Production of gas at AWE

Production

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

 
 

Decommissioning and rehabilitation

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.